Find the values of p and q given that x⁴ + x³ - 7x² + px + q is divisible by (x - 1) and (x + 2)​

Answers

Answer 1

Answer:

p = - 5, q = 10

Step-by-step explanation:

If f(x) is divisible by (x - h) then f(h) = 0

Here

f(x) = [tex]x^{4}[/tex] + x³ - 7x² + px + q

dividing by (x - 1) with h = 1 , then

[tex]1^{4}[/tex] + 1³ - 7(1)² + p + q = 0, that is

1 + 1 - 7 + p + q = 0

- 5 + p + q = 0 ( add 5 to both sides )

p + q = 5 → (1)

Dividing by (x + 2) with h = - 2 , then

[tex](-2)^{4}[/tex] + (- 2)³ - 7(- 2)² - 2p + q = 0 , that is

16 - 8 --- 28 - 2p + q = 0

- 20 - 2p + q = 0 ( add 20 to both sides )

- 2p + q = 20 → (2)

Subtract (1) from (2) term by term, thus eliminating q

- 3p = 15 ( divide both sides by - 3 )

p = - 5

Substitute p = - 5 into (1) and solve for q

- 5 + q = 5 ( add 5 to both sides )

q = 10


Related Questions

It is estimated that each guest at a party will eat 9/10
pounds of chocolates. How many guest can be served with 27 pounds of chocolate?

Answers

Answer:

30 guests

Step-by-step explanation:

If each guest eats 9/10 lbs of chocolate, then they eat 0.9 lbs of chocolate. We have 27 lbs of chocolate to be eaten.

To solve this, simply:

[tex]\frac{27}{.9} =30[/tex]

where 27 lbs is divided by 0.9lbs per guest to equal 30 quests.

I hope this helps!!! :)

the opposite number of -6.1

Answers

Answer:

I'm pretty sure that would be 6.1 - considering negative numbers and positive numbers are opposites.

What is the x intercept of f(x) = x + 12

Answers

Answer:

-12

Step-by-step explanation:

3. A trail mix recipe asks for 4 cups of raisins for every 6 cups of peanuts
There is a proportional relationship between the amount of raisins (cups) and the amount of peanuts p (cups), in this recipe

a. Write the equation for the relationship that has constant of
proportionality greater than 1 Graph the relationship

b. Write the equation for the relationship that has a constant of
proportionality less than 1. Graph the relationship

Answers

Level: Grade 7 Mathematics

----

Steps & Solution:

1. The relationship that has constant of proportionality greater than 1

[tex]\frac{p}{r} =\frac{6}{4} =\frac{3}{2}[/tex] { the calculator of a certain proportionaility }

[tex]p=\frac{3}{2} r[/tex]

2. The relationship that has constant of proportionaility less than 1

[tex]\frac{r}{p} =\frac{4}{6} =\frac{2}{3} \\r=\frac{2}{3} p[/tex]

What’s the answer to this question

Answers

Answer:

-9 and -8 ...............


Katherine and Ivan had 96 marbles in all. Katherine lost 24 marbles to Ivan
during a game. At the end of the game, Ivan had twice as many marbles as
Katherine. How many marbles did Ivan have at first?

Answers

K. 48-24=24

I. 48+24=72×2= (144) so 144

An equation is formed of two equal expressions. The total number of marbles that Ivan had at the first is 40.

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Let the number of marbles with Katherine be represented by k, while the number of marbles with Ivan is represented by x.

Given that the total number of marbles available with Katherine and Ivan is 96. Therefore, we can write,

k + x = 96

Solving the equation for k,

k = 96 - x

Further, Katherine lost 24 marbles to Ivan during a game and at the end of the game, Ivan had twice as many marbles as Katherine. Therefore, we can write the equation as,

2(k - 24) = (x + 24)

2k - 48 = x + 24

Substituting the value of k,

2(96 - x) - 48 = x + 24

192 - 2x - 48 = x + 24

192 - 48 - 24 = x + 2x

3x = 120

x = 120/3

x = 40

Hence, the total number of marbles that Ivan had at the first is 40.

Learn more about Equation here:

https://brainly.com/question/14686792

#SPJ5

I need help only answer if you’re 100 percent think it’s right

Answers

Answer:

1[tex]\frac{1}{2}[/tex]

Step-by-step explanation:

The answer is  1 1/2 because you have to divide 3 and 2

Whole number: 1

Fraction:1/2

3 divided by 2 is 1.5 or 1 1/2

Hope this helps!! :)

A 24-pack of mini cans of soda cost $21.98. How much iseach can?

Answers

Around .91 cents. I think

What is this problem
44+400÷(4+6'2)−2'4

(') that means power


250

244

18

10

Answers

Answer:

18

Step-by-step explanation:

♡ The first answer is correct

♡ Please mark them BRAINIEST

♡ Hope this helps

♡ Have a beautiful day

3- (4x-5)=6+x-8 solve for x

Answers

Answer:

x = 2

Step-by-step explanation:

pls can i have brainliest?

What is the surface area?
1 cm
1 cm
1 cm
square centimeters
Submit

Answers

Answer:

1 x 1 = 1.

6 x 1 = 6cm^2

multiply by 6 cause 6 faces

Find the slope intercept form of the equation of the line that’s has the given properties (1 , 3) m=1/4

Answers

Answer:

y = 1/4x + 11/4

Step-by-step explanation:

Given the slope, m = 1/4, and the point, (1, 3):

We can substitute these values into the slope-intercept form, y = mx + b, in order to solve for the y-intercept.  

The y-coordinate (b) of the point, (0, b ) is the y-intercept of the line where the graph of the linear equation crosses the y-axis. The y-intercept is also the value of y when x = 0.

y = mx + b

3 = 1/4(1) + b

3 = 1/4 + b

Subtract 1/4 from both sides:

3 - 1/4 = 1/4 - 1/4 + b

11/4 = b

The y-coordinate, b, of the y-intercept is 11/4.

Therefore, the slope-intercept form is: y = 1/4x + 11/4

Please mark my answers as the Brainliest if you find this explanation helpful :)

Are the ratios of 3 apples to 5 oranges and 9 apples to 15
oranges equivalent? Why or why not? Explain

Answers

Answer:

yes they are equivelant

Step-by-step explanation:

the reason they are equivelant is because they go from 3 apples to 6 apples to 9 apple, and 5 oranges to 10 oranges to 15 oranges. so this mark's it is also tymced by three

If someone build a house for 50 years how many months did it take to complete

Answers

Answer: 600

Step-by-step explanation:  12 months in one year. 12x50=600 months

Answer:

600 months

Step-by-step explanation:

In 1 year there are 12 months, so we take 50 (the years) and multiply that by 12

50x12=600 and we fact check by 600÷12=50. It takes 600 months to build the house over 50 years.

A(n) _____ is a proof that uses algebraic properties to reach a conclusion about an algebraic equation.

Answers

Answer:

algebraic proof

The complete statement is -

"An algebraic is a proof that uses algebraic properties to reach a conclusion about an algebraic equation"

What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is the statement as -

"An _____ is a proof that uses algebraic properties to reach a conclusion about an algebraic equation"

The complete statement is -

"An algebraic is a proof that uses algebraic properties to reach a conclusion about an algebraic equation"

Therefore, the complete statement is -

"An algebraic is a proof that uses algebraic properties to reach a conclusion about an algebraic equation"

To solve more questions on algebraic expressions, visit the link below-

brainly.com/question/1041084

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Help help help please please

Answers

Answer:

23×24 =27

answer is 7

answer is 7

Answer:

Step-by-step explanation:

[tex]a^{m}*a^{n}= a^{m+n}\\\\\\\dfrac{a^{m}}{a^{n}} = a^{m-n}\\\\\\2^{3}*\dfrac{2^{5}}{2^{1}}=2^{3}*2^{5-1}\\\\=2^{3}*2^{4}\\\\=2^{3+4}\\\\=2^{7}[/tex]

Can anyone help please:)

Answers

Answer:

THEORTICAL PROBABILITY:

1A) F

1B) B

1C) A

1D) D,E,F

2A) R

2B) B

3A) odd number

3B) No, same.

3C) less than 5

================

1A) 8/30=4/15

1B) 10/30=1/3

1C) 12/30=2/5

1D) 18/30=3/5

1E) 22/30=11/15

1F) 22/30=11/15

2A) 3/8

2B) 1/8

2C)4/8=1/2

2D) 5/8

2E)3/8

3A) 50

3B) 150

3C) 250

3D) 100

3E) 100

Step-by-step explanation:

Type the correct answer in the box. Use numerals instead of words.
Ali has hired Mark and Alexis to work for his shipping company. Mark can
load a truck with packages in 120 minutes. Alexis can load the same
number of packages in 240 minutes.
Mark and Alexis work together on a particular truck, they can load all of the packages in
minutes.

Answers

Answer:

80 minutes

Step-by-step explanation:

Work done by Mark in 1 minute = 1/120

Work done by Alexis in 1 minute = 1/240

Work done by Mark and Alexis in 1 minute = 1/120 + 1/240

                      [tex]= \dfrac{1*2}{120*2}+\dfrac{1}{240}\\\\=\dfrac{2}{240}+\dfrac{1}{240}\\\\=\dfrac{3}{240}\\\\=\dfrac{1}{80}[/tex]

They both can load  all the packages in 80 minutes.

Is (–2, –9) a solution to the equation y = x + 7

Answers

Answer:

no

Step-by-step explanation:

need help with my homework plz and thank u :)

Answers

Your answer is y=-3(x-1)^2-9 or the third one down

Whats the absolute value of x |x+5|= 35

Answers

Answer:

x=30

Step-by-step explanation:

A gallon of apple juice is
$7. A pack of eight 4.23
oz box apple juice is
$2.39. Which is a better
deal?

Answers

$2.39 i believe i haven’t done math like this in years but yeah if my multiplication is correct it’s that

PLEASE HELP WORTH 10

D. The expected height for someone with a femur length of 55 centimeters

Answers

198.5 or 199 if thats an option

A family bought a total of 13 tickets to a magic show, some adult and some child. The family paid a total of $85 Adult tickets are $15 each and tickets are $5 each. Let X represent adult tickets. Let y represent child tickets Write an equation to model the total amount of money that they spent.

Answers

9514 1404 393

Answer:

  15x +5y = 85 . . . . . equation for money spent

Step-by-step explanation:

The money spent will be the sum of products of numbers of tickets and their cost:

  15x +5y = 85

__

The number of tickets bought will be the sum of the numbers of each kind.

  x +y = 13

_____

The solution of this system of equations is (x, y) = (2, 11).

For which equation is (4, 3) a solution?
What’s the answer

Answers

Answer:

y = 2x - 5.

Step-by-step explanation:

hope this helps. I had this question and got it right!

slove and simply
(-2.56)(1.2)

Answers

Answer:

-3.072

Step-by-step explanation:

-2.56 multiplied by 1.2= -3.072

Please help I need for tonight thanks

Answers

Answer:

C. x+8=3x

Step by step explanation:

First, subtract 8 from both sides of the equation

x+8=3x

x+8-8=3x-8

Then, simplify it by subtracting again

x+8-8=3x-8

x=3x-8

Then, subtract 3x from both sides of the equation

x=3x-8

x-3x=3x-8-3x

Then, simplify by combining the terms

x-3x=3x-8-3x

-2x=3x-8-3x

-2x=3x-8-3x

-2x= -8

Then, divide both sides of the equation by the same term

-2x= -8

-2x/-2 = -8/-2

Then, simplify by cancling terms that are in both the numerator and denominator

-2x/-2 = -8/-2

x= -8/-2

Finally, divide the numbers

x= -8/-2

x=4

And that's your answer! :)

Arturo has $480 to spend at a bicycle store for some new gear and biking outfits. Assume all prices listed include tax. He buys a new bicycle for $201.87. He buys 3 bicycle reflectors for $9.82 each and a pair of bike gloves for $15.79. He plans to spend some or all of the money he has left to buy new biking outfits for $32.80 each. Write and solve an inequality which can be used to determine oo, the number of outfits Arturo can purchase while staying within his budget.

Answers

Answer:

$33.26 remaining after every single purchase, he can also purchase 7 biking outfits.

Step-by-step explanation:

is abc a right triangle?
yes
no

Answers

Answer:

yes

Step-by-step explanation:

cuz is the shape in the picture so that's triangle

Answer:

My Right answer is Yes

Step-by-step explanation:

I hoped it helps ..

PLEASE HELP
will mark brainliest!!

Answers

Answer: -6x

Step-by-step explanation: Since when x is 0, the function's output is 0, the function can only have terms with x in it. You then notice a pattern that x is always being multiplied by -6. You could also use point slope form to solve it, either way you get f(x)=-6x

Answer:

f(x) = -6x

Step-by-step explanation:

The linear equation given in the form of a table is shown as:

[tex]\left[\begin{array}{ccc}x&f(x)\\0&0\\1&-6\\2&-12\\3&-18\end{array}\right][/tex]

Because the equation is linear, in order to find the equation written in slope-intercept form, divide the rise (f(x)) by the run (x):

0 ÷ 0 = 8

-6 ÷ 1 = 8

-12 ÷ 2 = 8

-18 ÷ 3 = 8

Because the quotient for each relation is -6, the linear equation can be written as f(x) = -6x.

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