Determine the value of A so that x-1 is a factor of 2x^3 +x^2+2Ax+4

Answers

Answer 1

Answer:

When a polynomial f(x) is divided by ax + b and f(a/b) = 0, ax - b is a factor of f(x).

Let 2x³ + x² + 2Ax + 4 be f(x).

f(1) = 0

Substitute x = 1 into the equation.

2(1)³ + (1)² + 2A(1) + 4 = 0

2 + 1 + 2A + 4 = 0

2A = -7

A = -7/2


Related Questions

2
The stem-and-leaf diagram shows the
heights of the students in a class.
Heights of students
18 1
17 0 4 4
16
0 1
3
15
3778
14 9
13 4
6
7 8
6 7 8
Key 13 | 4 means 134 cm
a) Find three different averages and three
different measures of spread.
b) Which average and which measure of
spread would you use to represent this
dataset? Give reasons.

Answers

Svbeenufjfjdkwowkwnwnhee

Find the length of the third side. If necessary, round to the nearest tenth-
5
3

Answers

Since this is a right triangle, you can use the Pythagorean theorem. (3,4,5 is also a Pythagorean triple.)

See details:

Answer:

The third side is 4cm

Step-by-step explanation:

[tex] {3}^{2} + {a}^{2} = {5}^{2} [/tex]

a=25-9

a=16

a=4

Find the exact value of y

Answers

Answer:

3√2

Step-by-step explanation:

We have an isoceles right triangle, so the length of the hypotenuse is √2 the length of each leg.

[tex]y \sqrt{2} = 6[/tex]

[tex]y = \frac{6}{ \sqrt{2} } ( \frac{ \sqrt{2} }{ \sqrt{2} } ) = \frac{6 \sqrt{2} }{2} = 3 \sqrt{2} [/tex]

Hamid has gained weight. He now weighs 88 kg, which is 10% higher than his normal weight. What is Hamid's normal weight?​

Answers

Answer:

Hamid's original weight was 80 kgs

Morgan scored 41 points in 3 games. How many points would you expect him to make in an 11 game season?

Answers

Morgan will score 150.7 points in 11 season

How to calculate the number of points that Morgan will score ?

The first step is to calculate the number of point that Morgan will score in one season

41= 3

x= 1

cross multiply both sides

3x= 41

x= 41/3

x= 13.7

The number of points he will score in 11 game season can be calculated as follows

= 13.7 × 11

= 150.7

Hence Morgan will score 150.7 points in 11 game season

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Name the property of equality that justifies going from the first statement to the second statement first statement: 5x = 20 second statement: x = 4 a. addition property of equality b. division property of equality c. reflexive property of equality d. substitution property of equality

Answers

b. Division property of equality justifies going from the first statement: 5x = 20 to the second statement: x = 4.

Division property is a type of property of equality that states that if both sides of an equation are divided by the same number except 0, then that equation will remain true.

This property can be proved for the given statements as follows;

5x = 20

According to the division property of equality, we divide both sides by the same number which in this case is 5. Therefore;

5x = 20

5x/5 = 20/5

x = 4

As x = 4 is the second statement, therefore property of equality that justifies going from the first to the second statement is the division property of equality.

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Which value of x is the solution of the equation 2(x - 4) + 7 = 3?

Answers

[tex]\begin{gathered} 2(x-4)+7=3\rightarrow \\ 2x-8+7=3 \\ 2x-1=3 \\ 2x=3+1=4 \\ x=\frac{4}{2}=2 \end{gathered}[/tex]

so the answer is x=2

Answer:

x=2

Step-by-step explanation:

2(x-4)+7=3

First, multiply the 2 to x-4.

2x-8+7=3

Simplify.

2x-1=3

Add x on both sides.

2x=4

Divide 2 on both sides.

x=2

A line has a slope of – 3 and includes the points (5, – 6) and (s, – 3). What is the value of s?

Answers

Answer:

4

Step-by-step explanation:

[tex]\frac{(-6) - (-3)}{s - 5} = -3\\-3(s-5)=-3\\s-5=-1\\\\s=4[/tex]

i dont even know what to put

Answers

Answer:

first one (2*2*2*3*3)

Step-by-step explanation:

2*2*2*3*3=72

!!! Trigonometry emergency !!!

Answers

Answer:

2.4

Step-by-step explanation:

tan(theta) is defined as: [tex]tan(\theta)=\frac{\text{opposite}}{\text{adjacent}}[/tex]

in the given diagram we only have the opposite and hypotenuse, but we can use the Pythagorean Theorem to solve for the other two missing sides.

Pythagorean Theorem: [tex]a^2+b^2=c^2[/tex], where c is the hypotenuse.

Plugging in known values we get the following:

[tex]a^2+12^2=13^2[/tex]

in this case the missing side, or the adjacent side is simply "a"

from here we simplify the bases with exponents

[tex]a^2+144=169[/tex]

now subtract 144 from both sides

[tex]a^2=25[/tex]

take the square root of both sides

[tex]a=5[/tex]

So now we know the adjacent side so we can plug it into the tan equation

[tex]tan(z)=\frac{12}{5}\\\\tan(z)=2.4[/tex]

The graph of the function f(x) = -10x² + 700x - 600 shows the profit a company earns for
selling headphones at different prices. What is the maximum profit the company can expect to earn?

Answers

The maximum profit which this company can expect to earn is $11,650.

What is the maximum value of a function?

The maximum value of a function can be defined as a point on the graph where the function reaches its highest point. This ultimately implies that, the maximum value of a function simply refers to its vertex on a graph.

In order to determine the maximum profit which this company can expect to earn, we would differentiate the given function as follows:

f(x) = y = -10x² + 700x - 600

y' = -20x + 700

-20x + 700 = 0

20x = 700

x = 700/20

x = 35.

Substituting the parameter into the formula, we have;

f(x) = -10x² + 700x - 600

f(35) = -10(35)² + 700(35) - 600

f(35) = -12250 + 24,500 - 600

f(35) = $11,650.

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Eggs are sold in cartons containing one dozen eggs. If a farmers’s hens laid 660 eggs, how many cartons of eggs could the farmer sell?

Answers

Answer:

the farmer can sell 55 cartons

Step-by-step explanation:

1 carton = 12 eggs

660 decided by 12 = 55

Graph each equation by using the x and y intercepts
Question 2: 5x-2y=7

Answers

The x and y intercepts are (7/5, 0) and (0, -7/2) respectively.

What are x and y intercepts?A line crosses the x-axis at the x-intercept, and the y-intercept is where the line crosses the y-axis.We can graph linear equations by considering intercepts.Since the x-intercept lies on the horizontal axis, it is also known as the horizontal intercept.Since the y-intercept lies on the vertical axis, it is also referred to as the vertical intercept.

Given equation is 5x-2y = 7.

To find the x-intercept substitute y = 0 in the equation and then solve,

5x - 0 = 7

x = 7/5

So the x-intercept is (7/5, 0).

Similarly, to find the y-intercept substitute x = 0 in the equation and then solve,

0 - 2y = 7

y = -7/2

So the y-intercept is (0, -7/2).

Now, graph the intersections of (7/5, 0) and (0, -7/2).

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a small barber shop has a single chair and an area for waiting, where only one person can be in the chair at a time, and no one leaves without getting their hair cut. so the system is roughly: entrance → wait → haircut → exit assume customers arrive at the rate of 7 per hour and stay an average of 0.6 hour. what is the average number of customers in the barber shop?

Answers

There are 6 customers in the barber shop on an average.

What is average in ?

In mathematics, the middle value—which is determined by dividing the sum of all the values by the total number of values—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.

As per the Little's law, the average number of costumers or individuals in a system (L) can be calculated by multiplying the average arrival rate (λ) and the average time each customer spends in the system (W).

The algebraic expression, is as follows:

L = λW

Here,

L=inventory or average number of customers in the system.

λ=arrival rate = 10

W=flow time average customer spends in the system = 0.6

L = 0.6 * 10 = 6

Thus, there are 6 customers in the barber shop on an average.

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Which is the complete factorization of 6x3
+ 12x2

Answers

The answer to this question is 42

Which relation is a function?

Answers

The relation that is a function from the given option is Graph A.

Relations and functions

In mathematics, a relation is a group of ordered pairs that expresses the relationship between two sets.

Function contains both domain and codomain which are also known as dependent and independent variables

For the relation to be a function, two or more of the coordinates must not lie on the same line.

From the given graphs, the relation that is a function is Graph A since two points does not lie on the same vertical line.

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I need help for Finding the distance between points G and W. please!!!

Answers

4/3 or 1 1/3 because it’s split by thirds

Information to answer the question.

This data represents the number of jumps in a row 10 students made during a jump-rope competition.

30, 36, 38, 45, 57, 60, 77, 86, 88, 88

What is the interquartile range? Enter the answer in the box.

Jumps

Answers

The interquartile range of the number of jumps of the 10 students during the competition is 38.

What is the interquartile range?

The interquartile range is the difference between the third quartile and the first quartile. The interquartile range is used to determine the variation of a data set.

Th first step is to determine the median of the first half of the dataset. The median of the first half is the first quartile.

First half of the data set: 30, 36, 38, 45, 57

Median = first quartile =  38

The next step is to determine the median of the second half of the dataset. The median of the second half is the third quartile.

Second half of the data set: 60, 77, 86, 88, 88

Median : third quartile =  86

Interquartile range = third quartile - first quartile

86 - 38 = 48

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The direct distances in kilometres between six different towns are given in the table below. A dash indicates that there is no direct route available and the journey must be made via other towns.



(a) What is the total distance for the shortest possible route from Anglemouth to Doncatry? [1] WORK NEEDS TO BE INCLUDED :)

Answers

The shortest total distance for the route from Anglemouth to Doncatry is 15 units.

How to identify the shortest distance from Anglemounth to Doncatry?

On the table, we can see that there is a dash in the section of:

"Anglemouth to Doncatry"

So there is not a direct route, so we need to try another way.

If we go from Anglemouth to Covenham, we have a distance of 10 units.

If now we go from Covenham to Doncatry, we have a distance of 5 units.

Adding these two distances we get:

Total distance = 10 + 5 = 15 units.

This is also the shortest total distance between the two towns.

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Please help I’m desperate fr, I hate math too

Answers

Option C is the next step to construct a congruent angle.

What is congruency?

In geometry, two figures or objects are said to be congruent if their shapes and sizes match, or if one is the mirror image of the other.

Given Data

R makes the same angle with PQ and QR.

Option C is the next step to construct a congruent angle.

Steps to construct congruent triangle:

1) Each of the three sides is equal (SSS: side, side, side)

2) A comparable side and two angles are the same (ASA: angle, side, angle)

3) Both the angle between the two sides and the two sides' dimensions are equal (SAS: side, angle, side)

4) The hypotenuse, the corresponding side, and a right angle are all equal (RHS, right angle, hypotenuse, side).

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When Shaq first checked the temperature, it was 13 degrees. He
checked again later and it was 10 degrees. Express the change in
temperature as an integer.
> |×
Y
label optional
2
X² f(x)/x Xn
(X) X ≤
IV
skill code: 41103
TT

Answers

Initial temperature T₀ = 13°c

second Temperature T₁= 10°c

Change in Temperature  T₂ =  T₀ - T₁   = 13°c - 10°c   = 3°c

TemperatureUsing any of a number of arbitrary scales, temperature is a measure of hotness or coldness that shows the direction in which heat energy is moving.  When converting from degrees Celsius to Fahrenheit, multiply the result by 1.8 (or 9/5) and then by 32.

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Math
Seventh grade L.9 Solve percent equations: word problems JS6
Recommendations
pins
Pam ordered a set of red and yellow pins. She received 1,000 pins, and 91% of them were
red. How many red pins did Pam receive?
Submit
Skill plans
You have prizes
Vide

Answers

After solving percent equation ,the number of red pins from the set of red and yellow pins that Pam ordered is 910 red pins out of 1000 pins.

What is percent equation?

Eventually, we'll run into a problem that requires us to calculate a percentage of something. The percent equation is the formula we'll employ and it goes like this: part = percent x whole.

The symbol for percent (%) denotes a percentage of one hundred.

You'll need to convert between a percent and a decimal to express these numbers, so let's take a moment to go over that. When you see a percentage, it means 40 out of 100, or 40/100, and that is our fraction. When you divide 40 by 100, you get the decimal 0.40. Remember that 0.40 is the same as 40/100, which means 40%, when converting a decimal to a percent.

Pam ordered a set of red and yellow pins. She received 1,000 pins, and 91% of them were red, so the amount of red pins is

red pins = 91/100  ×  1000

red pins = 910

Thus, the number of red pins from the set of red and yellow pins that Pam ordered is 910 red pins out of 1000 pins

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I have an isosceles triangle. the height drawn on the base is 2.5 cm and the height drawn on the side is 3 cm. help calculate the base angle of a triangle​

Answers

Answer:

56.4 degrees

Step-by-step explanation:

You can make a right-angle triangle from the isosceles triangle, with height 2.5cm and hypotenuse 3cm.

You have the opposite side to the angle and the hypotenuse, so you use sin x = Opposite/Hypotenuse

sin x = 2.5/3

x = [tex]sin^{-1}[/tex] (2.5/3)

x = 56.44269024

Therefore the base angle of the triangle is 56.4 degrees (3sf)

What is 12b-9=??? if b=24?​

Answers

Answer: The answer is 279

Step-by-step explanation:

12 x 24=288

288-9=279

12(24)-9=279

12(24)-9=279 i think

The table of values shows the output values of three different equations for the same input values, x. Drag the correct expression to each row to complete each equation.​

Answers

The expression to represent the equation is given by  y = x + 3 .

An algebraic expression is one that was created in mathematics utilizing integer variables, constant, and algebraic procedures (accumulation, deletion, multiplication, separation, and exponentiation by a rational exponent).

However, since they are not produced by using integer constants and algebraic operations, transcendental numbers like the same and e are not algebraic.The production of is commonly stated as a geometric expression, although the definition of e requires an endless amount of algebraic operations.An expression can be reduced to a rational fraction by using the characteristics of arithmetic operations (  commutative properties and associative properties of addition and multiplication, distributive property and rules for the various operations on the given fractions).

The required expressions are :

y₁ = x + 3

y₂ = 3x²

y₃ = 3ˣ

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x + 3.5 = 4 1/3

×=4/5
×=5/6
×=47/6​

Answers

Answer:

Step-by-step explanation:

x=0.83

2
If x and y vary directly and y=32 when x=18, then which of the following equations correctly represents
the algebraic relationship between x and y?
(c) x + y = 50
16
(a) y=x
(b) y=x+14
(d) y=-x/16

Answers

Answer:

b, c

Step-by-step explanation:

a) 32=18 - not true

b) 32=18+14 - true

c) 18+32=50 - true

d) 32=-18/16 - not true

If  x and y vary directly, than the relationship between y and x will be →

y = (16/9)x

What is direct proportionality?

Direct proportion or direct variation is the relation between two quantities where the ratio of the two is equal to a constant value.

Given is x and y vary directly and y = 32 when x = 18.

Since x and y vary directly, this means that -

y/x = K [constant]

Now, we have -

x = 18

y = 32

Substituting values -

32/18 = K

K = 32/18 = 16/9

y/x = 16/9

y = (16/9)x

Therefore, if  x and y vary directly, than the relationship between y and x will be → y = (16/9)x

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A law firm is going to designate associates and partners to a big new case. The daily rate charged to the client for each associate is $800 and the daily rate for each partner is $1800. The law firm designated twice as many partners as associates to the case and was able to charge the client $17600 per day for these lawyers' services. Write a system of equations that could be used to determine the number of associates assigned to the case and the number of partners assigned to the case. Define the variables that you use to write the system.

Answers

The daily rate charged to the client for each associate is $800 and the daily rate for each partner is $1800.  The equations that could be used to determine the number of associates assigned to the case and the number of partners assigned to the case is: 800 x + 1800 y = 17600.

Equation

Let variable x = number of associates, assigned to the case

Let variable y = number of partners assigned to the case.

The system of equations to describe this are:

800 x + 1800 y = 17600

y = x + 2

Plugging equation 2 in equation 1, we get,

800 x + 1800(x+ 2) = 17600

2600 x + 3600 = 17,600

Collect like terms

2400 x = 14,000

Divide both side by 2400x

x = 14,000 / 2400

x = 5.8

x = 6 (Approximately)

So,

y = x + 2

y = 5.8 +3

y = 7.8

y = 8 (Approximately)

Therefore the number of associates assigned to the case were 6, and the number of partners associated to the case were 8.

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lloyd's cereal company packages cereal in 1 pound boxes (16 ounces). a sample of 25 boxes is selected at random from the production line every hour, and if the average weight is less than 15 ounces, the machine is adjusted to increase the amount of cereal dispensed. if the mean for 1 hour is 1 pound and the standard deviation is 0.1 pound, what is the probability that the amount dispensed per box will have to be increased?

Answers

The probability that the amount dispensed per box will have to be increased is 0.0062.

Consider the provided information.

Sample of 16 boxes is selected at random.

If the mean for 1 hour is 1 pound and the standard deviation is 0.1

1 Pound = 16 ounces , then 0.1 Pound = 16/10 = 1.6 ounces

Thus: μ = 16 ounces and σ = 1.6 ounces.

Compute the test probability

z= x−μ/σ/[tex]\sqrt{n}[/tex]

z= 15-16/ 1.6/4

z= -1/ 0.4

z= -2.5

By using the table.

Probability p value = P(Z<-2.50) = 0.0062

Thus, the probability that the amount dispensed per box will have to be increased is 0.0062.

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Zachary purchased a computer for $1,700 on a payment plan. Seven months after he purchased the computer, his balance was $790. Eight months after he purchased the computer, his balance was
$660. What is an equation that models the balance y after x months?

Answers

The equation that models the balance y after x months is;

y = 1,700 - 130x

What is Equation of line?

The equation of line with slope m and y intercept at point b is given as;

y = mx + b

Given that;

Zachary purchased a computer for $1,700 on a payment plan.

Seven months after he purchased the computer, his balance was $790.

Eight months after he purchased the computer, his balance was $660.

Now, Let months is represented by x and models the balance is represented by y.

So, We get;

For 0 months, balance is $1,700.

For 7 months, Balance is $790

For 8 months, balance is $660.

So, Slope = (1,700 - 790) / 7

               = 910/7

               = 130

And, Slope = (1,700 - 660) / 8

                = 1,040/8

                = 130

So, The equation with slope 130 and starting balance $1,700 will be;

y = 1,700 - 130x

Thus, The equation that models the balance y after x months is;

y = 1,700 - 130x

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