If An industrial scale is guaranteed by the manufacturer to have a percent error of no more than 1%. Its possible reading on the scale if you put 500 kilograms of iron ore on it is :495, 505.
Percent errorPercent error = 1%
Kilogram of iron ore = 500 kilograms
First step is to find the 1% of 500 kilograms
= .01 × 500 kilograms
= 5
Second step is to find the possible reading
Possible reading :
500 - 5
=495
500 + 5
= 505
Therefore we can conclude that based on the above analysis the possible reading can be between 495 and 505.
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Solve for X using the information below
The value of x is 10 .
In the question ;
from the given figure , we can see that MS=SL and KR=RL which means
that R and S are the mid points of sides ML and KL respectively .
The Mid Point Theorem states that
If the line segment adjoining the mid points of any of the sides of the triangle then the line segment is said to be parallel to the third side and is half of the length of the third side .
which means RS parallel to KM and KM/2=RS ( ... by mid point theorem)
Substituting the values of RS=2x-10 and KM=2x, we get
2x/2=2x-10
2x = 2(2x-10)
2x = 4x -20
4x-2x=20
2x=20
x=10
Therefore , the value of x is 10 .
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What are the solutions of equation (x-2)^2=-3x+6Select all that apply(The choices are in the image)
SNSWER
. x = 2
F. x = -1
EXPLANATION
e can rewrite this equation as a quadratic frunction equal to zero.
First apply the binomial squared on the left side:
[tex](x-2)^2=x^2-4x+4[/tex]This is to write it in standard form. Now we have the equation:
[tex]x^2-4x+4=-3x+6[/tex]We can add 3x on both sides of the equation:
[tex]\begin{gathered} x^2-4x+3x+4=-3x+3x+6 \\ x^2-x+4=6 \end{gathered}[/tex]And subtract 6 from both sides:
[tex]\begin{gathered} x^2-x+4-6=6-6 \\ x^2-x-2=0 \end{gathered}[/tex]Now we can use the quadratic formula to solve this for x:
[tex]\begin{gathered} ax^2+bx+c=0 \\ x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \end{gathered}[/tex]In our equation a = 1, b = -1 and c = -2:
[tex]\begin{gathered} x=\frac{1\pm\sqrt[]{1^2+4\cdot2\cdot1}}{2\cdot1} \\ x=\frac{1\pm\sqrt[]{1+8}}{2} \\ x=\frac{1\pm\sqrt[]{9}}{2} \\ x=\frac{1\pm3}{2} \\ x_1=\frac{1+3}{2}=\frac{4}{2}=2_{} \\ x_2=\frac{1-3}{2}=\frac{-2}{2}=-1 \end{gathered}[/tex]Therefore the solutions to the given equation are x = 2 and x = -1
Write 9⁴ as a power of 3.
Answer:
3^8
Step-by-step explanation:
9^4 = 9*9*9*9
9 = 3*3
9^4 = (3*3)*(3*3)*(3*3)*(3*3)
9^4 = 3*3*3*3*3*3*3*3 = 3^8
or, more simply
9 = 3^2
9^4 = (3^2)^4
we use (x^y)^z = x^(y*z)
(3^2)^4 = 3^(2*4) = 3^8
Can you solve this please.
A state's recidivism rate is 22%. This means about 22% of released prisoners end up back in prison (within three years). Suppose two randomly selected prisoners who have been released are studied. What is the probability that both of them go back to prison?
The probability that both of them go back to prison is 4.48%.
What is probability?Probability is a measure of the likelihood of an event occurring. Many events cannot be predicted with total certainty. We can predict only the chance of an event to occur i.e., how likely they are going to happen, using it.The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates the impossibility of the event and 1 indicates certainty.
The state recidivism rate is given by 22%.
So, the probability that both of the prisoners will go back to prison will be:
= 22% × 22%= 0.22 × 0.22= 4.84%Hence, the probability that both of them go back to prison is 4.48%.
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A statement is made about correlation. State whether the correlation is positive or negative and whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause.
As Thomas's income rose over the last 20 years so has his stress level.
Select one:
A.
Positive correlation; direct cause
B.
Negative correlation; common underlying cause
C.
Positive correlation; common underlying cause
D.
Positive correlation; coincidence
Based on the statement about Thomas's income rising along with his stress income, the correlation and cause is C. Positive correlation; common underlying cause.
What is a positive correlation?Positive correlation between two variables means that they move in the same direction. When one of the variables increases, the other variable increases as well. When one variable decreases, the other variable decreases too.
The income level of Thomas is increasing at the same time the stress is increasing so this is a positive correlation.
A higher Income level might lead to more work and responsibilities which is most likely the common underlying cause for the positive correlation.
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What would I set the scales to and where is the roots ,vertex and two other points
SOLUTION
Write out the equation
[tex]y=x^2+4x-12[/tex]The root of the equation is
[tex]\begin{gathered} x^2+4x-12=0 \\ x^2+6x-2x-12=0 \\ x(x+6)-2(x+6)=0 \\ (x+6)(x-2)=0 \end{gathered}[/tex]Equate the factors to zero
[tex]\begin{gathered} x+6=0,x-2=0 \\ x=-6,x=2 \end{gathered}[/tex]Hence, the root of the equation is
(-6,0) and (2,0)
The vertex of the equation will be obtained using
[tex]\begin{gathered} u\sin g\text{ the genera form of a quadractic equation } \\ ax^2+bx+c=0,\text{ tye vertex is given by } \\ \: x_v=-\frac{b}{2a} \\ \text{where } \\ a=1,b=4,c=-12\text{ from the given equation } \end{gathered}[/tex]Then
[tex]\begin{gathered} x=-\frac{4}{2\times1}=-\frac{4}{2}=-2 \\ \text{Then} \\ y=x^2+4x-12,\text{ where x=-2} \\ y=^{}(-2)^2+4(-2)-12=4-8-12=-16 \\ \text{Vertex (-2,-16)} \end{gathered}[/tex]Then
[tex]\begin{gathered} \text{The other two point could be } \\ x=0,y=0^2+4(0)-12=0+0-12=-12\text{ } \\ (0,-12) \\ x=2,y=2^2+4(2)-12=4+8-12=0 \\ (2,0) \end{gathered}[/tex]Plotting this point using the scale 2unit on both axes, the image of the graph will be
what is 3.3 in fraction
Answer: 33/10
Step-by-step explanation:
=3.3 X 10/10
= 33/10
Answer done. 33/10 #
Consider the following information: Cash = $6,000 Beginning Balance = $200,000 Capital added = $15,000 Revenues = $10,000 Expenses = $5,000 Net Income = $56,000 Owner’s Withdrawals = $60,000 What is the ending balance on the Statement of Changes in Owner's Equity for this data?
The ending balance Statement of Changes in Owner's Equity for this data is given by: $222,000.
How to calculate the ending balance?The ending balance is given by the difference between all the amounts that were on the account, and were added, by all amounts that were removed from the account.
The amounts that were added to the balance are given as follows:
Cash = $6,000.Beginning Balance = $200,000.Capital added = $15,000Revenues = $10,000Net Income = $56,000The amounts that were removed from the balance are given as follows:
Expenses = $5,000.Owner’s Withdrawals = $60,000Hence the ending balance is calculated as follows:
6,000 + 200,000 + 15,000 + 10,000 + 56,000 - 5,000 - 60,000 = $222,000.
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Two cars leave an intersection. One car travels north; the other east.
When the car traveling north had gone 12 mi, the distance between
the cars was 4 mi more than the distance traveled by the car
heading east. How far had the east bound car traveled?
The distance travelled by the east bound car is 8 mi.
What is defined as the distance?Distance is defined as an object's total movement without regard for direction. Distance can be defined as how much floor an object has covered regardless of its starting as well as ending point.Distance and displacement have been two quantities that appear to mean the same thing but have very different definitions and meanings. Distance is defined as "how much earth an object has contained during its motion," whereas displacement is defined as how far of place an object is."The distance travelled by the north car is 12 mi.
Let the distance covered by south car is x.
The distance travelled by the north car is 4 mi more than the distance traveled by the car heading east.
Thus,
x + 4 = 12
x = 12 - 4
x = 8
Thus, the distance travelled by the east bound car is 8 mi.
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Runners at a cross-country meet run 3 miles north and then 5 miles west from the starting line. Determine the shortest straight path they must run to get back to the starting line.
square root of 8 miles
4 miles
square root of 34 miles
8 miles
The shortest straight path they must run back to the starting line is the square root of 34 miles.
What is the shortest straight path?The distance run by the runners forms a right triangle. A right triangle is a polygon that has three sides. The length, base and the hypotenuse. The hypotenuse is the longest side of the right triangle.
The miles run north is the length, the miles run west is the base and the shortest straight path to the starting line is the hypotenuse.
In order to determine the hypotenuse, the Pythagoras theorem would be used.
The Pythagoras theorem: a² + b² = c²
where a = length
b = base
c = hypotenuse
3² + 5²
= 9 + 25
= 34
c = √34
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4. Find the volume of the cylinder. Leave youranswer in terms of π.
ANSWER
637.5π mm³
EXPLANATION
The volume of a cylinder is the product of its base area and its height. In this problem, the radius of the base of the cylinder is 5 mm, and its height is 25.5 mm. The volume is,
[tex]V=B\cdot h=(\pi\cdot r^2)\cdot h=\pi\cdot5^2mm^2\cdot25.5mm=\pi\cdot25\cdot25.5mm^3=637.5\pi\text{ }mm^3[/tex]Hence, the volume is 637.5π mm³.
The side length of a cube is x^-2 inches. What is the volume of the cube?
If the side length of the cube is x⁻² inches then the volume of the cube will be x⁻⁶ .
The volume of the cube with side length "a" can be calculated using the formula
Volume = a³ ,
For Example : if the side length of the cube is 2m , then the volume of the cube will be
Volume = 2³ = 8m³ .
In the question ,
it is given that ,
the side length of the cube is x⁻² inches ,
So, substituting the value of side length in the Volume formula , we get
volume = (x⁻²)³
= x⁻⁶ ....(as (xᵃ)ᵇ = (x)ᵃˣᵇ = xᵃᵇ )
Therefore , If the side length of the cube is x⁻² inches then the volume of the cube will be x⁻⁶ inches³ .
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In the figure below, circle O has a central angle of 120°.
What is the area of the shaded sector of circle O in terms of r, the radius? Leave your answer in terms of pi.
The area of the shaded section, in terms of the radius R, is:
A = 0.67*R^2
How to get the area of the shaded part?
On the image we can see a circle where a section with an angle of 120° is not shaded and the rest is shaded.
Remember that the area of a circle of radius R is:
A = pi*R^2
Where pi = 3.14
Particularly, for a section defined by an angle x the area is:
A = (x/360°)*pi*R^2
In this case we have:
x = 360° - 120° = 240°
Then the area, in terms of the radius, is:
A = (240°/360°)*3.14*R^2 = 0.67*R^2
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A retail variety store that advertises extensively by mail circulars expects a sale with 20% probability. Suppose 30 prospects are randomly selected from a city-wide mailing.
c. What is the probability that at least 12 sales will result from mailing to the 30 prospects?
Using the normal approximation to the binomial distribution, there is a 0.0060 = 0.60% probability that at least 12 sales will result from mailing to the 30 prospects.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable that has mean given by [tex]\mu[/tex] and standard deviation represented by [tex]\sigma[/tex] is given as follows:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
It measures how many standard deviations the measure is above(in case the score is positive) or below(in case the score is negative) the mean. From the z-score table, the p-value associated with the z-score is found, which represents the percentile of the measure X.The binomial distribution is the probability of x successes on n trials, with p probability of a success on each trial. It can be approximated to the normal distribution with [tex]\mu = np, \sigma = \sqrt{np(1-p)}[/tex].The parameters for the binomial distribution in the context of this problem are given as follows:
n = 30, p = 0.2.
Hence the mean and the standard deviation for the approximation are given as follows:
[tex]\mu = np = 30 \times 0.2 = 6[/tex].[tex]\sigma = \sqrt{np(1 - p)} = \sqrt{30 \times 0.2 \times 0.8} = 2.19[/tex]Using continuity correction, the probability that at least 12 sales will result from mailing to the 30 prospects is P(X > 11.5), which is one subtracted by the p-value of Z when X = 11.5, hence:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
Z = (11.5 - 6)/2.19
Z = 2.51
Z = 2.51 has a p-value of 0.9940.
1 - 0.9940 = 0.0060.
Hence the probability is of 0.0060 = 0.60%.
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5. Are these two claims equivalent, in conflict, or not comparable because they're talking about
different things?9 a. "75 percent of the federal health care law's taxes would be paid by those
earning less than $120,000 a year" b. "76 percent of those who would pay the penalty [health
care law's taxes] for not having insurance in 2016 would earn under $120,000"
well, one uses 75% and that other uses 76%, so hmmmm those values aren't equal however the statements are talking about the same type of group.
let's reword them
a)
75% of the HCLT will be paid by folks making < 120K
b)
HCLT is paid in 76% by folks making < 120k
a) we know that 75% of the HCLT is paid by those folks
b) we only know that many folks pay for the HCLT, but 76% of it is paid by folks making < 120k, namely 76% of the HCLT is paid by them.
pretty much the same group is referred on both statements.
What's the answer to this equation? Please include steps
6(915 - x) = 100 + x
Answer:
x = 770
Step-by-step explanation:
You want the solution to the equation 6(915 - x) = 100 + x.
SolutionIt often works well to simplify the equation first. Here, that means eliminating parentheses using the distributive property:
6(915) -6(x) = 100 +x
5490 -6x = 100 +x . . . . . . . . carry out the multiplication
5490 -6x +6x = 100 +x +6x . . . . . add 6x to both sides
5490 = 100 +7x . . . . . . . . . . collect terms
5490 -100 = 100 +7x -100 . . . . . . subtract 100 from both sides
5390 = 7x . . . . . . . . . . . . . . collect terms
5390/7 = (7x)/7 . . . . . . . . . . . . . . . . divide both sides by 7
770 = x . . . . . . . . . . . . . . . . carry out the division
The solution to the equation is x = 770.
__
Check
6(915 -770) = 100 +770 . . . . use the value of x in the equation
6(145) = 870 . . . . true
__
Additional comment
After eliminating parentheses, this is a 3-step linear equation, so is solved in the usual way. First, the variable terms are collected on one side of the equal sign. Then the constant terms are collected on the other side of the equal sign. Finally, the equation is divided by the coefficient of the variable.
In 6 and 7, use the diagram. The art room at a school is made up of three sections: a pottery section, a painting section, and a sculpture section. 6. Artwork will be on display for an art show in all sections of the art room except the sculpture section. How much space is available for the art show? 7. What is the area of the painting section? Please im confused
Space available for the art show is 2/3 or 66.6%.
What is fraction?A number that represents a rational number is called a common fraction. Additionally, that same quantity can be expressed as a decimal, a percent, or a negative exponent.
The art room is divided into a total of three divisions, as can be seen from the information given. There is 2/3 of the total amount of space available for the art section because the artwork will only be presented on 2 of the 3 available parts. With 33.3% of the art room currently filled and unavailable, only 66.6% of the space is available for the art to be displayed on.
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An agency charges $100 per person for a trip to a concert if 50 people travel in a group. But for each person above the 50, the amount charged for each traveler will be reduced by $3. If x represents the number of people above the 50, write the agency's revenue R as a function of x. (Assume that x is greater than zero.)
R(x) =
The equation of the function of the agency revenus in terms of x is R(x) = (50 + x) * (100 - 3x)
What are quadratic equations?Quadratic equations are second-order polynomial equations and they have the form y = ax^2 + bx + c or y = a(x - h)^2 + k
How to determine the agency's revenue R as a function of x?From the question, the given parameters are given as
Number of people = 50
Amount charged per person = $100
The above means that the total charges is
Total = Number of person * Amount charged per person
Rewrite as
Revenue = Number of person * Amount charged per person
From the question, we have
The charges for each traveller reduces by $3 for each additional person
Let the number of added person be x
So, we have
Revenue = (Number of person + x) * (Amount charged per person - 3x)
Substitute the known values in the above equation
So, we have
R(x) = (50 + x) * (100 - 3x)
Hence, the agency's revenue R as a function of x is R(x) = (50 + x) * (100 - 3x)
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Given M(-2, 1) is the midpoint on AB and point A has coordinates (-8, -3), find:
Point B
[tex]~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ A(\stackrel{x_1}{-8}~,~\stackrel{y_1}{-3})\qquad B(\stackrel{x_2}{x}~,~\stackrel{y_2}{y}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{ x -8}{2}~~~ ,~~~ \cfrac{ y -3}{2} \right) ~~ = ~~\stackrel{\textit{\LARGE M}}{(-2~~,~~1)} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{ x -8}{2}=-2\implies x-8=-4\implies \boxed{x=4} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{ y -3}{2}=1\implies y-3=2\implies \boxed{y=5}[/tex]
The table represents a quadratic function. Write an equation of the function in standard form.
-9-7-5-3
0 8 8
X
y
y=0
Previous
1 2
0
30
4
32
5
6
7
10
Next
Answer:
Step-by-step explanation:
I will give brainliest, like and rating if u solve this right
6) TRUE OR FALSE?
Answer: True
Step-by-step explanation:
The length of a rectangle is 5 less than twice it’s width. If the perimeter of the rectangle is 56 inches, find it’s dimensions.
L = 2w - 5
Plug this in for perimeter equation:
2l + 2w = 56
4w - 10 + 2w = 56
6w = 66
W=11
now find length
L = 22 - 5
L = 17
2x-3>7 i kinda need help can i get the answer
Answer:
x>5
Step-by-step explanation:
2x>10
x>5
Government agencies keep data about the income distribution of the population. The Moore family and Kelly family live in a county with 11,000 families.
Moore family's income is at the 24th percentile. The Kelly family's income is at the 77th percentile.
(If necessary, consult a list of formulas.)
(a) Which of the following must be true about the Moore family's and the Kelly
family's incomes?
The Kelly family earns more than the Moore family.
Both the Moore family and the Kelly family earn more than the median
income.
O The Kelly family earns $53,000 more than the Moore family.
The Moore family and the Kelly family both have incomes in the bottom half
of incomes in their county.
(b) Which of the following must be true about the Moore family's income?
O The Moore family earns more than about 76% of families in their county.
About 76% of the families in their county earn more than the Moore family.
O The Moore family earns about 24% of the highest income in their county.
The Moore family earns about 76% of the highest income in their county.
5
(a) (c) The Kelly family earns more than the Moore family.
(b) (a) The Kelly family earns more than the Moore family.
What is Percentile ?Each of the 100 equal groups into which a population can be divided according to the distribution of values of a particular variable is called percentile.
Percentile is computed using the following formula,
P = n/N X 100
Where, n =ordinal rank of a given value
N = number of values in the data set,
P = Percentile
In (a) part , Kelly family's percentile is 77th percentile and Moore family's percentile is 24th percentile.
therefore option (c) i.e. The Kelly family earns more than the Moore family is correct .
In (b) part , Moore family's income is less than Kelly's family income.
therefore option (a) i.e. The Kelly family earns more than the Moore family is correct.
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Please solve this question!! Please help me
In order to simplify the expression, start by solving the subtraction of fractions in the form
[tex]\frac{a}{b}-\frac{c}{d}=\frac{ad-bc}{bd}[/tex]then,
[tex]undefined[/tex]help meeeeeeeeeeeeeeeeeeeeeeeeee
Answer and Explanation:
1B: {x | -7 ≤ x ≤ 8}
2A: [-4, 3]
2B: {y | -4 ≤ y ≤ 3}
The range of a function is its set of y-values.
Set builder notation (roster method) is a way to define the values within a set.
Peter has 480 yards of fencing to enclose a rectangular area. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
A rectangle that maximizes the enclosed area has a length of _____ yards and a width of _____
1. Length of rectangular area = 120 yards
Width of rectangular area = 120 yards
2. Maximum area = 14,400 square yards.
What is Multiplication?
To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
Total fencing Peter has = 480 yards
Now,
We can say that the total fencing he has in terms of length L and width W of the rectangle will be;
⇒ L + L + W + W = 480
⇒ 2(L+W) =480
Divide both sides by 2 to get
⇒ L+W = 240
Subtract W from both sides so we get L in terms of W;
⇒ L= 240 - W
Since, The area of a rectangle is Length times width.
So, Area = (L × W)
⇒ Area = (240-W) W
⇒ Area = 240W - W²
Now, By comparing the equation with an quadratic equation
ax² + bx + c , we get;
⇒ a = -1 and b = 240
Since, Area is maximum when;
W = -b/2a
W = - 240/-2
W = 120
So, for W = 120 yards area is maximum.
Hence, Length of yards = 240 - 120 = 120 yards.
(b) Maximum area of the rectangle can be found by substitute this
W = 120 in the Area equation;
So, the maximum area ,
A = 240 (120) - 120²
A = 28800 - 14400
A = 14400
Hence, Maximum area = 14,400 square yards.
Thus,
1. Length of rectangular area = 120 yards
Width of rectangular area = 120 yards
2. Maximum area = 14,400 square yards.
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Which ordered pair, when graphed, would be on the same line as (1, -2) and (-2, 4)?
OA) (-2, 6)
OB) (3, 6)
OC) (3,-6)
OD) (1, 2)
Ordered pair, when graphed, would be on the same line as (1, -2) and
(-2, 4) are (3,-6).
As given in the question,
Equation of the line passes through the point (1.-2) and (-2,4) when graphed is :
(y +2)/(x-1) = (4+2)/(-2-1)
⇒y +2 = -2(x -1)
⇒y =-2x
Ordered pair satisfied the equation of the line passes through the point (1.-2) and (-2,4) when graphed is :
A. (-2,6)
x=-2 ⇒y=4
Not satisfied.
B. (3,6)
x=3⇒y=-6
Not satisfied.
C.(3,-6)
x=3⇒y=-6
Satisfied.
D. (1,2)
x=1⇒y=-2
Not satisfied.
Therefore, ordered pair, when graphed, would be on the same line as (1, -2) and (-2, 4) are (3,-6).
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There are 7 people taking part in a raffle. Ann, Hans, Jim, Kira, Omar, Ravi, and Soo. Suppose that prize winners are randomly selected from the 7 people. Compute the probability of each of the following events. Event A: Ann is the first prize winner, Jim is second, Soo is third, and Kira is fourth. Event B: The first four prize winners are Soo, Ann, Ravi, and Hans, regardless of order. Write your answers as fractions in simplest form.
P(A) =
P (B) =
The probability of event A is 0.0012 and the probability of event B is 0.0288
How to find the probabilities?There are 7 people and 4 prices.
A) The probability that Ann wins the first prize is 1/7, assuming that all 7 people have the same probability of winnig.
Then Jim is second, now the probability is 1/6 (because we don't count Ann anymore).
Soo wins the third one, with a probability 1/5.
Kira wins the last one, with a probability of 1/4.
The joint probability is the product of all the individual ones:
P(A) = 1/7*1/6*1/5*1/4 = 0.0012
B) Now we just want that Soo, Ann, Ravi, and Hans win, but the order does not matter.
So we have the same probability than above, but now we need to include the permutations of the 4 elements, so we add a factor 4!.
P(B) = 4!*0.0012 = 4*3*2*1*0.0012 = 0.0288
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