PLEASE HELP WILL MARK BRAINLIEST..Write a polynomial function of least degree with rational coefficients so that P(x) = 0 has the given roots.
x= -2, x=7

P(x)=

PLEASE HELP WILL MARK BRAINLIEST..Write A Polynomial Function Of Least Degree With Rational Coefficients

Answers

Answer 1

A polynomial function of least degree with rational coefficients so that P(x) = 0 has the given roots is P(x)=x²-5x-14

What is a polynomial function?

A function is said to as polynomial when a variable in an equation, such as a quadratic equation or cubic equation, etc., has only positive integer exponents or non-negative integer powers. One polynomial with an exponent of 1 is 2x+5, for instance. One that has more than two algebraic terms is referred to as a polynomial expression. Polynomial is a monomial or binomial that is repeatedly added, as the name suggests.

A mathematical expression containing one or more algebraic terms, where each algebraic term is made up of a constant multiplied by one or more variables raised to a nonnegative integral power.

x= -2, x=7

Given,

P(x) = 0

This polynomial function has the roots,

x= -2, x=7

So,

(x+2)(x-7)

We have to multiply both of them we get,

P(x)=(x+2)(x-7)

0=x²-5x-14

x²-5x-14=0

Therefore, P(x)=x²-5x-14 is the polynomial function.

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Related Questions

WILL MARK FIRST ANSWER BRAINLIEST ‼️‼️ NEED HELP ASAP PLEAZE

Answers

Equation: 15 • t = 75
Solution: t = 5 minutes. I got this by dividing both sides by 15

You want to buy a $181,000 home. You plan to pay 15% as a down payment, and take out a 30 year fixed loan for the rest.
Round all answers to the nearest cent as needed.

a) How much is the loan amount going to be?
$


b) What will your monthly payments be if the interest rate is 4.5%?
$


c) What will your monthly payments be if the interest rate is 5.5%?
$
Submit QuestionQuestion 4

Answers

Answer:

a)  $153,850

b)  $779.54

c)  $873.54

Step-by-step explanation:

Part a)

[tex]\begin{aligned}\textsf{Loan amount}&=\textsf{Cost of property}-\textsf{Down payment}\\&=181000-(181000 \times 0.15)\\&=181000-27150\\&=153850\end{aligned}[/tex]

Therefore, the loan amount is $153,850.

Part b)

[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Monthly Payment Formula}\\\\$PMT=\dfrac{Pi\left(1+i\right)^n}{\left(1+i\right)^n-1}$\\\\where:\\\\ \phantom{ww}$\bullet$ $P =$ loan amount \\\phantom{ww}$\bullet$ $i =$ interest rate per month (in decimal form) \\\phantom{ww}$\bullet$ $n =$ term of the loan (in months) \\\end{minipage}}[/tex]

Given:

P = $153,850i = 0.045 per year = 0.045/12 per monthn = 30 years = 360 months

Substitute the given values into the  Monthly Payment formula and solve for PMT:

[tex]\implies \sf PMT=\dfrac{153850 \cdot \frac{0.045}{12}\left(1+\frac{0.045}{12}\right)^{360}}{\left(1+\frac{0.045}{12}\right)^{360}-1}[/tex]

[tex]\implies \sf PMT=\dfrac{153850 \cdot 0.00375\left(1.00375\right)^{360}}{\left(1.00375\right)^{360}-1}[/tex]

[tex]\implies \sf PMT=779.5353492[/tex]

Therefore, the monthly payments would be $779.54.

Part c)

Given:

P = $153,850i = 0.055 per year = 0.055/12 per monthn = 30 years = 360 months

Substitute the given values into the Monthly Payment formula and solve for PMT:

[tex]\implies \sf PMT=\dfrac{153850 \cdot \frac{0.055}{12}\left(1+\frac{0.055}{12}\right)^{360}}{\left(1+\frac{0.055}{12}\right)^{360}-1}[/tex]

[tex]\implies \sf PMT=873.5433786[/tex]

Therefore, the monthly payments would be $873.54.

Please help me I just look at the photo I am so confused

Answers

Answer:

Grandma=P

Wagon=TH

Library= PL

Step-by-step explanation:

its pretty simple

At the local bunny-hop, Mr. Meyering jumps 20 inches on his first jump and then 10 inches with his second jump. If the distances form a geometric sequence, what is the total distance Mr. Meyering jumps if he completes infinitely many jumps?

Hint: Use S= a1/1- r and remember that |r| must be less than 1.

Answers

At the local bunny-hop, the sum of geometric sequences showing the jumps performed by Mr. Meyering is 40

How to find the sum of the jumping records of Mr. Meyering

The Sequences of the jump include

20, 10, ...

The common ratio, r is calculated from

first term, a * common ratio, r = second term

20 * r = 10

20r = 10

r = 10/20

r = 1/2

hence r < 1

The sum of gp to infinity for r < 1 is

Sum = a/ (1 - r)

Sum = 20 / (1 - 1/2)

Sum = 20 / 1/2

Sum = 20 * 2

Sum = 40

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Write an explicit formula for
35, 44, 53, ....
an,the nth term of the sequence

Answers

Answer:

[tex]a_n=9n+26[/tex]

Step-by-step explanation:

An explicit formula for a sequence allows you to find the nth term of the sequence.

To determine if the sequence is arithmetic or geometric, calculate the differences between the terms:

[tex]35 \underset{+9}{\longrightarrow} 44 \underset{+9}{\longrightarrow} 53[/tex]

As the first differences are the same, the sequence is arithmetic with a common difference, d, of 9.

[tex]\boxed{\begin{minipage}{8 cm}\underline{General form of an arithmetic sequence}\\\\$a_n=a+(n-1)d$\\\\where:\\\phantom{ww}$\bullet$ $a_n$ is the nth term. \\ \phantom{ww}$\bullet$ $a$ is the first term.\\\phantom{ww}$\bullet$ $d$ is the common difference between terms.\\\phantom{ww}$\bullet$ $n$ is the position of the term.\\\end{minipage}}[/tex]

Substitute a = 35 and d = 9 into the formula to create an explicit formula for the nth term of the sequence:

[tex]\implies a_n=35+(n-1)9[/tex]

[tex]\implies a_n=35+9n-9[/tex]

[tex]\implies a_n=9n+26[/tex]

9) 7 Divided by 292 plssss help

Answers

The value when 7 is divided by 292 is given as 0.023972(approximation)

What is division ?

One of the fundamental mathematical operations is division, which involves breaking a bigger number into smaller groups with the same number of components. How many groups will be created, for instance, if 30 students need to be separated into groups of five for a sporting event? The division operation may be used to quickly and simply fix such issues. In this case, we must divide 30 by 5. 30 x 5 = 6 will be the outcome. There will thus be 6 groups with 5 students each. The initial number, 30, which is obtained by multiplying 6 by 5 may be used to confirm this figure.

The names of the phrases connected with the division process are referred to as division parts. The division is made up of the following four components: dividend, divisor, quotient, and remainder.

In the problem 7 is the Dividend and 292 is the divisor so

[when we add decimal 0 is added to the number and for each 0 in the quotient 0 is also added to the number if the zero is after the decimal]

      292 ) 700( 0.023972

              - 584                

                 1160

                - 976    

                  2840

                 -2628    

                    2120

                   -2044  

                       760

                      - 584

                         176

7 divided by 292 is 0.023972 (approx.)

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Graham Auto Parts has current sales of $42,700, EBIT of $9,700, net income of $6,600, interest expense of $1,360, and dividends paid of $1,925. Assume the net profit margin, debt-equity ratio, and dividend payout ratio are held constant. Sales are expected to increase by $8,000 next year. What is the projected change to retained earnings for next year?

Answers

Retained profits for the upcoming year: 5551.

Retained earnings: What is it?

The amount of profit a business keeps after paying all of its direct and indirect expenses, income taxes, and dividends to shareholders is known as retained profits. This is the percentage of the company's equity that may be utilized, for example, to fund the purchase of new machinery, research and development, and marketing.

RE=[tex]RE_{0}[/tex]-NI-D

Reserved Earnings

RE stands for initial retained income.

Net income is referred to as NI.

the dividend D

Graham Auto Parts now has $42,700 in sales, $9,700 in EBIT, $6,600 in net income, $1,360 in interest expenditure, and $1,925 in dividends paid. and a $8,000 rise in revenue is anticipated for the following year.

8000/42700 = 0.1873536 is the sales growth rate as a result. Its proportion is 18.73536%.

Now project net income = 6600 * 1.1873536

7837

dividends = 1925*1.1873536 = 2286

7837 - 2286 = 5551

retained earnings for next year 5551

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Suppose a triangle with the vertices (-1, 4), (-1, -2) and (2, -2) were dilated, with the center of dilation at the origin and with a scale factor of 2. Which of these would be a vertex of the dilated figure? Select the three correct answers. A. (-2, -4) B. (-2, 8) C. (-1, -4) D. (-1, 4) E.

Answers

New coordinates become (-2,8) (-2,-4) and (4,-4)

What do you mean by scale factor?

Magnification is defined as the scale ratio of a given original object and a new object that is a representation of it but of a different size (larger or smaller).

The new figure obtained is similar to the original figure

The expansion description should state how much the shape was expanded.

Suppose a triangle with the vertices (-1, 4), (-1, -2) and (2, -2) were dilated, with the center of dilation at the origin and with a scale factor of 2.

As we know, if (x,y) point dilated by scale factor a then new coordinates become (ax, ay)

So, if triangle having vertices (-1, 4), (-1, -2) and (2, -2) were dilated, with the center of dilation at the origin and with a scale factor of 2 then new coordinates become (-2,8) (-2,-4) and (4,-4)

Therefore, new coordinates become (-2,8) (-2,-4) and (4,-4)

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Question 1
Match the sample description with the type of sample that was taken.
Names of all high school students are placed on slips of paper in a box and 10 are chosen.________

Fifteen students are randomly selected from each grade level.______

A high school is divided into classrooms and one classroom is selected._______

All high school students eating lunch at 11 am.______

All students in the school are listed in alphabetical order and every 50th name is chosen._______

Answers

The sampling types in this problem are given as follows:

Names of all high school students are placed on slips of paper in a box and 10 are chosen -> Random.Fifteen students are randomly selected from each grade level -> Stratified.A high school is divided into classrooms and one classroom is selected -> Cluster.All high school students eating lunch at 11 am -> Convenient.All students in the school are listed in alphabetical order and every 50th name is chosen -> Systematic.

What are the sampling types?

The sampling types used in this problem are defined as follows:

Random: all options are listed as options and then some are selected.Convenient: all the options are at some place such as the cafeteria then some are selected.Systematic: one of each n elements is chosen.Cluster: options are divided into groups, and then one group is selected.Stratified: options are divided into groups, and then a proportion of each group is chosen.

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Elizaveta painted 35 m2 of wall space. This represents 20% of the total area.
What is the total area of the walls to be painted?

Answers

The total area of the space will be equal to 175 square meters.

What is the percentage?

The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that Elizaveta painted 35 square meters of wall space. This represents 20% of the total area.

The total area will be calculated as,

20% of area = 35 square meters

100% of the area = ( 35 x 100) / 20

100% of the area = 175 square meters

Therefore, the total area of the space will be equal to 175 square meters.

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Elizaveta painted 35 m2 of wall space. This represents 20% of the total area.

What is the total area of the walls to be painted?f ^(4) 2

Write the equation of the line perpendicular to 5x-4y=1 that passes through the point (1,-6) in slope form AND in standard form.

Answers

Answer:

[tex]\textsf{Slope form}: \quad y=-\dfrac{4}{5}x-\dfrac{26}{5}[/tex]

[tex]\textsf{Standard form}: \quad 4x+5y=-26[/tex]

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{6.3 cm}\underline{Slope-intercept form of a linear equation}\\\\$y=mx+b$\\\\where:\\ \phantom{ww}$\bullet$ $m$ is the slope. \\ \phantom{ww}$\bullet$ $b$ is the $y$-intercept.\\\end{minipage}}[/tex]

Given equation:

[tex]5x-4y=1[/tex]

Rewrite in slope-intercept form:

[tex]\implies 5x-4y+4y=1+4y[/tex]

[tex]\implies 5x=1+4y[/tex]

[tex]\implies 5x-1=1+4y-1[/tex]

[tex]\implies 5x-1=4y[/tex]

[tex]\implies \dfrac{5}{4}x-\dfrac{1}{4}=\dfrac{4y}{4}[/tex]

[tex]\implies y=\dfrac{5}{4}x-\dfrac{1}{4}[/tex]

Therefore, the slope of the line is ⁵/₄.

If two lines are perpendicular to each other, their slopes are negative reciprocals.

Therefore, the slope of the perpendicular line is -⁴/₅.

Substitute the found slope -⁴/₅ and given point (1, -6) into the slope-intercept formula and solve for b:

[tex]\implies -6=-\dfrac{4}{5}(1)+b[/tex]

[tex]\implies -6=-\dfrac{4}{5}+b[/tex]

[tex]\implies b=-\dfrac{26}{5}[/tex]

Therefore, the equation of the perpendicular line in slope form is:

[tex]y=-\dfrac{4}{5}x-\dfrac{26}{5}[/tex]

[tex]\boxed{\begin{minipage}{5.5 cm}\underline{Standard form of a linear equation}\\\\$Ax+By=C$\\\\where:\\ \phantom{ww}$\bullet$ $A, B$ and $C$ are constants. \\ \phantom{ww}$\bullet$ $A$ must be positive.\\\end{minipage}}[/tex]

Multiply both sides of the equation in slope form by 5:

[tex]\implies y \cdot 5=-\dfrac{4}{5}x\cdot 5-\dfrac{26}{5}\cdot 5[/tex]

[tex]\implies 5y=-4x-26[/tex]

Add 4x to both sides:

[tex]\implies 5y+4x=-4x-26+4x[/tex]

[tex]\implies 4x+5y=-26[/tex]

Therefore, the equation of the perpendicular line in standard form is:

[tex]4x+5y=-26[/tex]

Han ran 10 m in 2.7 seconds. Priya Ran 10 m in 2.4 seconds Who ran faster ?

Answers

Han ran faster. This is because Han was able to run the same distance as Priya but in less time.

CAN SOMEONE HELP WITH THIS QUESTION?✨

Answers

The coordinates in a graph indicate the location of a point with respect to the x-axis and y-axis.

The coordinates in a graph show the relationship between the information plotted on the given x-axis and y-axis.

The equation of the form y = A[tex]2^x[/tex] + K  from the graph above is

y = (-5/3) . [tex]2^x[/tex] - (2/3)

What are coordinates in a graph?

The coordinates in a graph indicate the location of a point with respect to the x-axis and y-axis.

The coordinates in a graph show the relationship between the information plotted on the given x-axis and y-axis.

We have,

y = [tex]2^x[/tex]

From the graph, we see that,

x = 0, y = -1

x = 1, y = -4

Now,

The equation in the form of y = A.[tex]2^x[/tex]  + K can be written as,

Taking (0, -1) we get,

-1 = A x 1 + K

-1 = A + K ______(1)

Now,

Taking (1, -4) we get,

-4 = A x 2 + K

-4 = 2A + K _____(2)

From (1) and (2) we get,

A = K - 1 putting in (2) we get,

-4 = 2(K - 1) + K

-4 = 2K - 2 + K

-4 = 3K - 2

3K = -4 + 2

3K = -2

K = -2/3

Now,

A = K - 1

A = -2/3 - 1

A = (-2 - 3) / 3

A = -5/3

Now,

The equation is y = (-5/3) . [tex]2^x[/tex] - (2/3)

Thus,

The equation of the form y = A[tex]2^x[/tex] + K  from the graph above is

y = (-5/3) . [tex]2^x[/tex] - (2/3)

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A. Use a triple integral to find the volume of the given solid. The tetrahedron enclosed by the coordinate planes and the plane8x + y + z = 2B. Find the volume of the smaller wedge cut from a sphere of radius 4 by two planes that intersect along a diameter at an angle of π/6.

Answers

The volume of the smaller wedge cut from a sphere of radius 4 by two planes that intersect along a diameter at an angle of π/6 is 1/6.

What is volume ?

Volume is a measurement of three-dimensional space that is occupied. It is frequently expressed quantitatively using SI-derived units, as well as several imperial or US-standard units. Volume and the notion of length are connected.

Consider that the tetrahedron is bounded by the coordinate planes and the plane 8 x+y+z=2

Evaluate the triple integral [tex]\iiint_E d V$.[/tex]

The lower boundary of tetrahedron is the plane z=0 and the upper boundary of tetrahedron is the plane z=2-8 x-y.

And the projection is y=2-8 x.

The x-limits are obtained by taking y=0 and z=0 in 8 x+y+z=2.

[tex]$$\begin{array}{r}8 x=2 \\x=\frac{2}{8} \\x=\frac{1}{4}\end{array}$$[/tex]

Therefore, the region becomes [tex]$R=\left\{(x, y, z) / 0 \leq x \leq \frac{1}{4}, 0 \leq y \leq 2-8 x, 0 \leq z \leq 2-8 x-y\right\}$[/tex].

Therefore, the integral becomes

[tex]$ \iiint_E d V=\int_0^{\frac{1}{4}} \int_0^{2-8 x} \int_0^{2-8 x-y} d z d y d x $[/tex]

[tex]$=\int_0^{\frac{1}{4}} \int_0^{2-8 x}[z]_0^{2-8 x-y} d y d x $[/tex]

[tex]$ =\int_0^{\frac{1}{4}} \int_0^{2-8 x}[2-8 x-y] d y d x $[/tex]

[tex]$ =\int_0^{\frac{1}{4}}\left[2 y-8 x y-\frac{y^2}{2}\right]_0^{2-8 x} d x . $[/tex]

[tex]$ =\int_0^{\frac{1}{4}}\left[2(2-8 x)-8 x(2-8 x)-\frac{(2-8 x)^2}{2}\right] d x $[/tex]

[tex]$ =\int_0^{\frac{1}{4}}\left[32 x^2-16 x+2\right] d x $[/tex]

[tex]$ =\left[32\left(\frac{x^3}{3}\right)-16\left(\frac{x^2}{2}\right)+2 x\right]_0 $[/tex]

[tex]$ =32\left(\frac{\left(\frac{1}{4}\right)^3}{3}\right)-16\left(\frac{\left(\frac{1}{4}\right)^2}{2}\right)+2\left(\frac{1}{4}\right)-0 $[/tex]

[tex]$ =\frac{1}{6} $[/tex]

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I need help with 2 questions. Please help

Answers

For diagram 5, X = 76° and from diagram 6 x = 80° in the given triangles

What is an isosceles triangle?

An isosceles triangle is a type of triangle that has any two sides equal in length. The two angles of an isosceles triangle, opposite to equal sides, are equal in measure. In geometry, triangle is a three-sided polygon that is classified into three categories based on its sides, such as:

Scalene triangle (All three sides are unequal)

Isosceles triangle (Only two sides are equal)

Equilateral triangle (All three sides are equal)

Find attachment to understand the explanation

∠A = ∠C ( base angles of an isosceles triangle)

∠A = x and ∠C = 76

Therefore ∠X = 76°

For diagram 6

interior ∠A + exterior ∠A = 180°

but exterior ∠A = 110°

interior ∠A = 180  - 110

interior ∠A = 70°

∠A = ∠C( base angles of isosceles ΔBAC) which is 70°

∠A + ∠B + ∠c = 180

∠B = 180 - 70 - 70

∠B = 40°

but ∠CBA + ∠CBD = 90 because ∠B = 90° and ∠CBA = 40°

∠∠CBD = 90 - 40

∠CBD = 50°

But ∠∠CBD = ∠BDC( base angles of isosceles Δ)

so that

∠BCD + ∠CBD + ∠BDC = 180°( angles in a triangle)

x + 50 + 50 = 180

x = 180 - 100

x = 80°

In conclusion the value of x in the first and second diagrams are 76° and 80° respectively

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10.
A
group of friends went to lunch. The bill,/before)
sales tax and tip, was $37.50. A sales tax of 8%
was added. The group then tipped 18% on the
amount after the sales tax was added.
What was
the amount, in dollars, of the sales tax?
What was the total amount the group paid,
including tax and tip?

Answers

Answer:

The total amount of the sales tax: $3.00

The total amount paid: $47.25

Step-by-step explanation:

Tip (In $): 6.75

Sales tax: 3.00

The total amount of food (before additional fees): 37. 50

So, to find the amount (in dollars) of the sales tax and tip, we must use this formula:

Amount = whole number * part percent/100

So, plugging in the numbers to the formula, it would look like this:

37.50 * 18 / 100
That is how to find the tip, you would do the same to find the sales tax. Then, when you get both amounts, you add them to 37.50 (the total before the fees) and get $47.25.

zero and negative exponents result from applying properties of exponents. for example, zero indicates that the same number of repeated factors of a non-zero base was found in both the numerator and denominator of an expression.

Answers

The question is incomplete , I am answering it with my general knowledge,

Zero exponent

Simplifying an expression with a 0 as the exponent does not need consideration of the base value.

Any non-zero number multiplied by 0 has the value 1.

x0 = 1, where x = 0 and x = 1, 2, 3, and so forth.

Negative exponent

For any positive integer m and non-zero number a,

a⁻ⁿ=1/a⁻ⁿ

This rule states that if the exponent is negative, it can be made positive by writing the same number in the denominator and writing one for the numerator.

When a number is positive, the exponent shows how many times it has been multiplied by itself.

On the other hand, the negative exponent indicates how many times we must divide the base number. The negative exponent, then, tells us how many times to multiply the reciprocal of the base, to put it another way.

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Could Someone help me fill in the blanks for this problem?

Answers

Based on given question question, following are the answers of blanks based on Midpoint Theorem.

- ∠ECD ≅ ∠BCA [Vertically opposite angle]- ∠D ≅ ∠A [Alternate interior angle]Given, ∠DEC ≅ ∠ABCC is the midpoint of D and A

1.) Definition of midpoint

The midpoint theorem states that the line segment joining the midpoints of any two sides of a triangle is parallel to the third side and equal to half of the third side.

2.) ∠ECD ≅ ∠BCA [Vertically opposite angle]

Vertical angles are a pair of non-adjacent angles formed by the intersection of two straight lines. In simple words, vertical angles are located across from one another in the corners of the "X" formed by two straight lines. They are also called vertically opposite angles as they are situated opposite to each other.

3.) ∠D ≅ ∠A [Alternate interior angle]

When two parallel lines are crossed by a transversal, the pair of angles formed on the inner side of the parallel lines, but on the opposite sides of the transversal are called alternate interior angles. These angles are always equal.

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19) A parking garage charges the rates in the table below. What is the rate of change? Don't forget your units.

Answers

The rate of change is not constant.

What is rate of change ?

A rate of change is a measurement of how one quantity alters in proportion to another. The dependent variable y must be present if independent variable x is. rate of change = y-to-x conversion of change. Change rates may be positive or negative.

We know that the rate of change in a function is given by :-

(change in dependent variable) / (change in independent variable)

Let x denotes the Number of hours and y denotes the Cost of parking .

Here , x- independent variable

y- dependent variable

Now, rate of change = ( change in y) / ( change in x)

                                  = (14-10)/(3-1) = 2

Here , the rate of change = $ 2 per hour.

Again rate of change =  ( change in y) / ( change in x)

                                    = (16-14)/(5-3) = 1

Here , the rate of change = $ 1 per hour.

Since both rate of changes are not equal , it means the rate of change is not constant.

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Find the average rate of change of g(x) = 3x² - 8x from x= 1 to x = 6.
Simplify your answer as much as possible.

Answers

The average rate of change of g(x) = 3x² - 8x from x= 1 to x = 6 is 13.

What is the average?

The middle number, which is obtained by dividing the sum of all the numbers by the variety of numbers, is the average value in a set of numbers. To calculate the average of a set of data, add up all the values and divide the result by the total number of values.

Given:

g(x) = 3x² - 8x

The intervals, x = 1 to x = 6

Calculate the values of g(6) and g(1) as shown below,

g(6) = 3 × 6² - 8 × 6

g(6) = 3 × 36 - 48

g(6) = 108 - 48

g(6) = 60

And, g(1) = 3 × 1² - 8 × 1

g(1) = 3 - 8

g(1) = -5

Calculate the average rate of change as shown below,

The average rate of change = [g(6) - g(1)] / x₂ - x₁

The average rate of change = [60 - (-5)] / 6 - 1

The average rate of change = 65 / 5

The average rate of change = 13

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A certain radioactive material decays in such a way that the mass in kilograms remaining

Answers

The mass of the substance that would remain after 50 years is 49 Kg

What is radioactive decay?

We know that the term radioactive decay has to do with the breakdown of a radioactive substance and such  a break down can be modelled by the use of a mathematical function as we can see here.

The mathematical function that we can be  able to use for the modeling is given as;  m(t)=120e^-0.018t where t is the time that is taken in years.

After 50 years we are going to have;

m(t)=120e^-0.018(50)

m(t)= 49 Kg

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Missing parts;

A certain radioactive material decay in such a way There’s a mass in kilograms remains after T years is given by the that the mass in kilograms remains after T years is given by the function m(t)=120e^-0.018t

How much mass remains after 50 years? Round to 2 decimal places.

Every day a school bus driver passes the same traffic light twice, once before school and once after. Each time he passes the light, he records If it is red, green, or yellow.
Here is a summary of the data he got after 200 days.

Traffic light before school Traffic light after school Number of day
red red 25
red green 21
red yellow 17
green red 16
green green 31
green yellow 27
yellow red 22
yellow green 28
yellow yellow 13

Suppose the driver will continue recording the colors for 150 more days.
In how many of these 150 days will the light be red exactly once? Use the data to make a prediction.

Answers

Answer:

Step-by-step explanation: the amswer is B trust me

If 4 people out of 20 have a chance of getting a cold, what would be the risk of getting a cold?

Answers

Answer:

Step-by-step explanation:

The risk of getting a cold is calculated by dividing the number of people who have a chance of getting a cold by the total number of people. In this case, the risk of getting a cold is 4 people / 20 people = 20%. Therefore, the risk of getting a cold is 20%.

On a bike trip, Gwen notes that she
covers about 160 miles every 4 days.
If she continues at this rate, using a
ratio table to determine how many
miles she could bike in 6 days

Answers

Answer: 240 miles

Step-by-step explanation:

160m = 4 days

miles 40-1  days

        80-2

        120-3

         160-4

       200-5

          240-6

Bethany charges $20 to walk one dog, plus $10 for each additional dog she walks for the same family.

A. Write an equation for the function that relates the total cost (y) a family would pay Bethany to walk more than one dog.

B. How much would the Jones family need to pay Bethany for walking their 4 dogs?

Answers

Step-by-step explanation:

A)20+10x=y

B)20+10(3)=y

20+30=y

y=50

A series of rigid motions maps ANEM onto ACDE. Based on this information, which of the following is a true statement? OA) There isn't enough information to make a statement about ANEM and ACDE B) ACDE is half the area of ANEM. C) All corresponding pairs of angles and sides of ANEM and ACDE are congruent. OD) The corresponding pairs of angles of ANEM and ACDE are congruent, but the corresponding sides aren't. Question 9 (5 points)​

Answers

All the corresponding pairs of angles and sides of ΔNEM and ΔCDE are congruent.

What is rigid motion?

A geometric figure is moved by rigid motions, but its size and shape remain unchanged. It generates visuals that make sense.

Rigid transformation comes in four different varieties.

1. translate 2. reflect. 3. Rotation 4. Gliding reflection

Here,

We have a series of rigid motion maps ΔNEM  onto ΔCDE.

We have to find the correct statement, so we concluded that all the corresponding pairs of angles and sides of ΔNEM and ΔCDE are congruent.

Hence, ΔNEM and ΔCDE are congruent.

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The height of a rectangular box is one inch and 56.23 inch cubed respectively. What is the volume of the box if the if the height is increased to 13 inches?

Answers

Therefore, the new volume comes out to be 787.22 cm3.

What category of science is volume?

The volume of a substance is a measurement of how much space it occupies. Matter is a term used to describe a physical substance that has mass and occupies space. In physical disciplines like chemistry, cubic meters are the standard unit of volume (m3). This yields other units like the litre (L) and milliliter (mL) (mL).

Here,

When the height was raised here by 13 inches, it was equivalent to adding an additional 13 levels, each measuring 56.23 cm3, to the prism that already existed.

Your new volume would therefore be: => 56.23 cm3 + 13 (56.23 cm3) = > 787.22 cm3.

therefore, the new volume comes out to be 787.22 cm3.

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The base diameter and the height of a cone are both
equal to x units.
X
X
Which expression represents the volume of the cone, in
cubic units?
Ο πχ
O 27x³
7x3

Answers

The volume of a cone is given by the formula:

V = (1/3) * π * r^2 * h

Where V is the volume, r is the radius of the base, and h is the height of the cone.

In this case, the base diameter and the height of the cone are both equal to x units, so the radius of the base is x/2 units. Therefore, the volume of the cone is:

V = (1/3) * π * (x/2)^2 * x

= (1/3) * π * x^3 / 4

= (π/4) * x^3

The correct expression for the volume of the cone is therefore O πx^3.

The expression that represents the volume of the cone in cubic units is:

V = (1/12) π x³

What is a cone?

It is a shape of a Christmas tree where there is a base of radius r and a top point called the apex.

The volume of a cone is 1/3πr²h

We have,

The volume of a cone can be calculated using the formula:

V = (1/3) πr²h

where r is the radius of the base and h is the height.

Since the diameter of the base is equal to x, the radius is equal to half the diameter, which is x/2.

Also, we know that the height of the cone is also equal to x.

Substituting these values into the formula, we get:

V = (1/3)π (x/2)² x

Simplifying this expression, we get:

V = (1/3)π(x²/4)x

V = (1/12)πx³

Therefore,

The expression that represents the volume of the cone in cubic units is:

V = (1/12) π x³

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A woman buys a car for R350 000. Calculate the
estimated price of a new car in 4 years' time if the
inflation rate is 12.3%. Give your answer to the
nearest rand.

Answers

The estimated price of a new car in 4 years time if the inflation rate is 12.3% is 393050

What is meant by inflation rate?

In economics, "inflation" refers to a significant increase in the price of goods and services throughout an economy. This is why growing prices often cause inflation. Deflation, which is a sustained decline in the average level of prices for goods and services, is the reverse of inflation. The most common measure of inflation is the annualized percentage change in an index of general prices, also known as the inflation rate.

Given,

The cost of the car bought by a women=350000

Time=4 years

And inflation rate=12.3%

We know that,

Inflation rate=((B-A)/A)×100

Here A denotes the standing price

So, A=350000

B denotes estimated price

So, B=x

12.3=((B-350000)/350000)×100

43050=B-350000

B=393050

Therefore, the estimated price of a new car in 4 years time if the inflation rate is 12.3% is 393050.

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During a single day at radio station WMZH, the probability that a particular song is
played is 17%. What is the probability that this song will be played on at most 2 days
out of 7 days? Round your answer to the nearest thousandth.

Answers

There is a 0.001 percent chance that this song will be played on no more than two of the seven days.

A probability simple definition is what?

A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

Detailed explanation:

Since this is a combination issue, we must first determine the combination of 7 select 5, and then multiply that result by the chance of each possible outcome:

Pick 5 from a combination of 7:

C(7,5) = 7! / (5! * 2!) = 7*6/2 = 21

This figure indicates that there are 21 alternative ways that the five days we want to be allocated in the seven days could be used.

The likelihood of each event is now:

5 days of song playback: (0.15)5

The song wasn't played for two days: (0.85)2.

Therefore, the final likelihood is

P =(0.15)^5*C(7,5) * (0.85)^2 = 0.001

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