katfried7 katfried7

04-07-2021
Mathematics

contestada

when x^2 - 3x +2k is divided by x+2, the remainder is 7. find the value of k.

Respuesta :

Eddie1Wan Eddie1Wan

04-07-2021

Answer:

let's find the zeros of the divisor

x+2=0

x=-2

let x²-3x+2k =f(x)

Now f(-2)=(-2)²-3(-2)+2k=7

4+6+2k=7

2k=7-10

2k=-3

k=-3/2

Answer Link

Otras preguntas

Which is the best unit for measuring the weight of an elephant? a. Ounces b. Tons c. Gallons d. Miles

A dining set is priced at $785. If the sales tax is 7 percent, what is the cost to purchase the dining set? Round to the nearest cent if necessary.

The same force is applied to two skateboards. One rolls across the room and the other moves a few feet and comes to a stop. Where was there more work done? a.

m=7n make n the subject

Which of the following numerical expressions may represent the probability of a simple event? a. 1/2 * 1/6 b. 1/52 * 1/2 c. 1/52 d. 1/52+1/2

What is the answer to 2a-3=7

Determine if a2 + 4a + 4 is a perfect square trinomial and factor. a. (a 4)2 b. (a +2)2 c. (a 2)2 d. Not a perfect square trinomial.

Four adults spend $37 for admission and $3 for parking at the zoo. Solve the equation 4a + 3 = 40 to find the cost of admission per person.

Triangle XYZ has been dilated to form triangle LMN. What is the least amount of information needed to prove the two triangles are similar? a. Two pairs of corr

Sonji paid $25.00 for two scarves, which were different prices. When she got home she could not find the receipt. She remembered that one scarf cost $3 more tha