The polynomials ax³ -3 x² +4 and 2x³ -5x+a, when divided by (x-2), leave the remainders p and q are respectively. If p -2 q=4, find the value of a.​

Answers

Answer 1

Given:

The polynomial are:

[tex]ax^3-3x^2+4[/tex]

[tex]2x^3-5x+a[/tex]

If the above polynomial divided by (x-2) then they leave remainder p and q respectively.

[tex]p-2q=4[/tex]

To find:

The value of a.

Solution:

According to the remainder theorem, if a polynomial f(x) is divided by (x-c), then the remainder is f(c).

If the polynomial [tex]ax^3-3x^2+4[/tex] is divided by (x-2), then the remainder is p. So.

[tex]a(2)^3-3(2)^2+4=p[/tex]

[tex]8a-12+4=p[/tex]

[tex]8a-8=p[/tex]

If the polynomial [tex]2x^3-5x+a[/tex] is divided by (x-2), then the remainder is q. So.

[tex]2(2)^3-5(2)+a=q[/tex]

[tex]16-10+a=q[/tex]

[tex]6+a=q[/tex]

It is given that,

[tex]p-2q=4[/tex]

[tex](8a-8)-2(6+a)=4[/tex]

[tex]8a-8-12-2a=4[/tex]

[tex]6a-20=4[/tex]

Add 20 on both sides.

[tex]6a=4+20[/tex]

[tex]6a=24[/tex]

[tex]a=\dfrac{24}{6}[/tex]

[tex]a=4[/tex]

Therefore, the value of a is 4.


Related Questions

Answers ASAP please I really need it

Answers

Answer:

x = 50

Step-by-step explanation:

Answer:

x = 50

Step-by-step explanation:

180 - 75 = 105

2x + 5 = 105

now I subtracted both sides by 5

2x = 100

divide both sides by 2:

x = 100/2

x = 50

Have a nice day!

what is 2 divided by 9/10 ​

Answers

Answer:

20/9

Step-by-step explanation:

2/(9/10)=(2/1)(10/9)=20/9

The Unit Circle

In a unit circle, the sine of the angle is represented by the vertical leg of the triangle. What is represented by the horizontal leg of the triangle?

a. cosecant of the angle
b. tangent of the angle
c. cosine of the angle
d. cotangent of the angle

Please select the best answer from the choices provided

Answers

Answer:

c. cosine of the angle

Step-by-step explanation:

Cos = adj/hyp

in unit circle

cos = x/1

cos = x

x is the horizontal leg

Answer:

C. Cosine of the angle

Step-by-step explanation:

I calculated it logically

help geometry please

Answers

Answer:

12

It would be easier to explain if the triangle and the parallelogram have their points named.

Some first hints: The area of a tri

angle equals to 1/2 of height times length of corresponding base side. The area of a parallelogram equals to height times the corresponding base side. in addition, in a parallelogram, two opposing side have the exact same length.

Since then, we can write the area of the triangle as 1/2× h× 18= 9×h

we can write the area of the parallelogram as : 18×h

Since then, we can write the area of the compound as 9×h + 18×h= 27h.

Voila. I gues you can figure out the rest. Please ask more if you have trouble with this

Answer: 12

Step-by-step explanation:

find the area of the figure. just give the answer plz

Answers

Answer:

58.5 feet you're welcome

Sara was thinking of a number. Sara divides by 2, then adds 10 to get an answer of 6. What was the original number?

Answers

Answer:

The original number was -8

Step-by-step explanation:

You can find this out because -8 divided by 2 is -4 and then plus 10 would become 6

Answer:

-8

Step-by-step explanation:

We know that Sara has a number by which she divides by 2, added 10 and ended up with 6. We are then asked to find the original number she had in mind.

To solve, we need to go backwards, starting with the original number, and applying all the steps she did but with the opposite operation.

6 is her ended number, we know before she added 10, so subtract 10 from 6:

[tex]6-10=-4[/tex]

Now we know that she divided by 2, therefore multiply -4 by 2:

[tex]-4*2=-8[/tex]

-8 was Sara's first number.

A six-sided die is rolled two times. What is the theoretical fractional probability that the first number is even and the second number is odd?​

Answers

Answer:

The theoretical probability that the first number is even and the second number is odd is [tex]\frac{1}{4}[/tex].

Step-by-step explanation:

Since each dice has six sides, and there are two die, the total amount of different outcomes are [tex]6^2[/tex] or 36. The probability of getting an even number on the first roll is [tex]\frac{3}{6}[/tex] or [tex]\frac{1}{2}[/tex], and the probability of getting an odd number on the second roll is also [tex]\frac{3}{6}[/tex] or [tex]\frac{1}{2}[/tex], so the probability of getting an even number on the first roll and an odd number on the second roll is [tex]\frac{1}{2} * \frac{1}{2} = \frac{1}{4}[/tex].

Does this graph below represent a function? (Yes or no)

Answers

Answer:yes

Step-by-step explanation: it represents a function

Three people split the cost of the last two lunch bills. The two bills were $18 and $15. How much did each person contribute?
Group of answer choices

$11

$15

$18

$33

Answers

$11 because you add the 2 and then divide by 3 and 18 plus 15 is 33 and 33 divided by 3 is 11

Which of the following is TRUE?
A. 8<-7
B -1 > 1
C. 6> 3
D. 4 <-2

Answers

9514 1404 393

Answer:

  C. 6 > 3

Step-by-step explanation:

It is true that 6 is greater than 3.

__

All negative numbers are less than any positive numbers.

We hope you are sufficiently familiar with numbers and counting to be able to tell which positive numbers are more or less than any other positive number.

Solve for x

A. 82
B. 98
C. 196
D. 164

Answers

Answer:

i think thAt it is c

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

1. it is a linear equation 98 plus something is going to equal 180 so you would put subtract 98 from 180 to get 82

2. since the other angle is inscribed you would double you answer to get 164

Find the lengths of each segment

Answers

Answer:

KL = 5.3

Step-by-step explanation:

Base on proportionality theorem, we have the following equation showing the relationship between the segments:

4/6 = KL/8

Cross multiply

6*KL = 8*4

6*KL = 32

DIvide both sides by 6

KL = 32/6

KL ≈ 5.3

can someone help me pls

Answers

Answer:

[tex]x = 55°[/tex]

Step-by-step explanation:

L1 and L2 are parallel, so that the 2 interior angles are equal to 180°.

[tex](2x + 10) + (x + 5) = 180° \\ 2x + x + 10 + 5 = 180° \\ 3x = 165° \\ x = 55°[/tex]

You come across a box of perfume what should you do Amazon

Answers

take it back to the original owner

Calculate the area of triangle .

Answers

Answer:

20 units

Step-by-step explanation:

The formula for the area:

A = bh × 1/2

B = 8 units

H = 5 units

8 × 5 = 40

40 × 1/2 = 20



It takes 3 pieces of wood to make a bird house. Marina has 21 pleces of wood. She uses this problem to find out how many bird houses she can
make.
21 +3
Which other problem could Marina use to find the number of bird houses she can make

Answers

She can find out answer by dividing 21÷3 and the answer is 7

She can make 7 bird house

7 is the answer of the question

21÷ 3

=7

Step-by-step explanation:

hope it is helpful to you

Factorise: x^2/y^2+1+y^2/X^2​

Answers

Answer:

[tex]( \frac{x}{y} + \frac{y}{x} + 1)( \frac{x}{y} + \frac{y}{x} - 1)[/tex]

Step-by-step explanation:

Hope it is helpful.....

sum of two numbers is 5 while the difference of the two numbers is 6 find the two numbers​

Answers

Answer:

Suppose the one number be x

And the other number be 6x

The sum of two numbers is 5

x+6x=5

7x=5

X=5/7

Therefore

One number be 5/7

And other number be 6 * 5/7=30/7

If you are helped with my answer pls tag me brianliest I really want it

THANK YOU...............

(Algebra 2) help me please:( no links I will report please help me out )!!!

Answers

Answer:

The answer should be $57000(1.025)²⁰ = $93,401

Step-by-step explanation:

What is the missing number in the synthetic division problem below?

A. 9
B. 8
C. -7
D. 2​

Answers

Your answer :

Your answer is B

Monica has $20. She needs to buy a gallon of milk that costs $2.50. She also wants to buy yogurt, which costs $1.20 a cup. What is the greatest number of cups of yogurt Monica can buy?

Use the inequality 1.20x + 2.5 ≤ 20 to solve the problem.

Monica can buy _____ cups of yogurt.

Answers

14 I hope this helps

The final exam grade distribution for all students in the introductory statistics class at a local community college is displayed in the table, with A = 4, B = 3, C = 2, D = 1, and F = 0. Let X represent the grade for a randomly selected student from the class.


What is the standard deviation of the distribution?


A) 1.16

B) 1.08

C) 1.41

D) 2.98

Answers

The answer is B I know this

The standard deviation of the distribution is 1.08.

Option B is the correct answer.

What is a standard deviation?

The standard deviation measures how spread out the data is from the mean, and it is a measure of the average distance of the data points from the mean.

We have,

To find the standard deviation of the distribution, we first need to calculate the expected value (mean) of X.

The expected value of X is:

E(X) = (4)(0.4) + (3)(0.32) + (2)(0.17) + (1)(0.08) + (0)(0.03)

= 1.6 + 0.96 + 0.34 + 0.08 + 0

= 2.98

Next, we need to calculate the variance of X:

Var(X) = (4 - 2.98)²(0.4) + (3 - 2.98)²(0.32)

+ (2 - 2.98)²(0.17) + (1 - 2.98)²(0.08) + (0 - 2.98)²(0.03)

= 0.64(0.4) + 0.0004(0.32) + 0.7921(0.17) + 5.4084(0.08) + 8.6404(0.03)

= 0.256 + 0.000128 + 0.134257 + 0.432672 + 0.259212

= 1.082

The standard deviation of X is the square root of the variance:

So,

SD(X) = √(Var(X))

= √(1.082)

= 1.04 (approximately)

Thus,

The standard deviation of the distribution is 1.08.

Learn more about standard deviation here:

brainly.com/question/23907081

#SPJ7

the table shows the linear relationship between the average height in feet of trees on a tree farm and the number of years till the trees were planted,





what is the rate of change of the average height and feet of the trees on the farm with respect to the number of years since the trees were planted?​

Answers

Step-by-step explanation:

the equation :

Hn = 7n + 3

where :

Hn : the height of trees at year to-n

n : year to-n (n = 1,2,3,...)

so, the rate of change : increasing 7 feet per year.

The rate of change of the average height and feet of the trees on the farm with respect to the number of years will be 7.

What is the slope?

A slope is a tangent or angle at a point and a slope is the intensity of inclination of any geometrical lines.

Slope = Tanx where x will be the angle from the positive x-axis at that point.

The slope could be positive or negative.

The slope is also calculated by differentiation for example slope of y = sinx will be y' = cosx.

The rate of change also refers to the slope.

The slope associated with two points (x₁, y₁) and (x₂, y₂) is given by

Slope = (y₂ - y₁)/(x₂ - x₁).

Taking two points (1,10) and (3,24)

Slope associated with these;

(24-10)/(3-1) = 7

Hence "The rate of change of the average height and feet of the trees on the farm with respect to the number of years will be 7".

To learn more about slopes,

https://brainly.com/question/3605446

#SPJ2

a boy is 20 years old at present. How old was he 3 years ago?​

Answers

Answer: seven-teen

Step-by-step explanation:twenty minus three

The age of the boy three years ago is A = 17 years

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

The present age of the boy = 20 years

Three years ago, the boy's age would have been:

20 - 3 = 17

Hence , the boy was 17 years old three years ago.

To learn more about equations click :

https://brainly.com/question/19297665

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PLEASE HELP ASAP NO LINKS OR WILL BE REPORTED! 1. In the figure below, a line intersects two parallel lines. Fill in the missing angles. a /b d e 42° C f f g (a) ​

Answers

Answer:

<a=138°

<b=42°

<c=138°

<d=138°

<e=42°

<f=42°

Step-by-step explanation:

<a is supplementary with the 42° angle:

<a=180°-42°=138°

<b and the 42° are vertical angles, so:

<b=42°

<c and <a are also vertical angles so:

<c=<a=138°

<d and <a are corresponding angles, so:

<d=<a=138°

<e and <b are corresponding angles, so:

<e=<b=42°

<f and the 42° angle are corresponding angles, so:

<f=42°

<g and <c are corresponding angles, so:

<g=<c=138°

Please help! I really need this other wise I’m going to fail! I can’t figure it out!

Answers

i think the answer is d. when you add everything in the punnet square you get 36x^2-3x-14.

539,904 nearest 10 for my homwork

Answers

Answer:

539,900 if thats what you're looking for.

Step-by-step explanation:

Answer:

539900

Step-by-step explanation:

what is the sum of the first 10 terms of the geometric sequence 1 , -2, 4, -8, 16, 32...​

Answers

Answer:

S10= -341

Step-by-step explanation:

1,-2,4,-8,16,.......

Sum of first 10 terms of geometric sequence

Sn=a(r^n-1)/r-1

where, a= first term

n= number of terms

r=common ratio

common ratio (r)= second term/first term

r=-2/1

r=-2

a=first term

a=1

n= number of terms

n=10

S10=1[(-2)^10-1]/-2-1

S10=(1024-1)/-3

S10=1023/-3

S10= -341

therefore, the sum of the first 10 terms is -342

Please help and show work

Answers

Answer:

sqrt( 3V /(pi h)) =r

Step-by-step explanation:

V = 1/3 pi r^2 h

Multiply each side by 3

3*V = 3*1/3 pi r^2 h

3V =  pi r^2 h

Divide each side by pi h

3V / (pi h) = pi r^2 h / ( pi h)

3V /(pi h) = r^2

Take the square root of each side

sqrt( 3V /(pi h)) = sqrt(r^2)

sqrt( 3V /(pi h)) =r

Evaluate the following algebraic expression when x = 3 2x2+ 5x - 10

Answers

Answer:

x3−2x2−5x+10=(x2−5)(x−2)

Step-by-step explanation:

i hope i helped u

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