All categories

3 years ago

Pls help me on this i don't know what to do

Mathematics

1 answer:

saw5 [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Factor out x^2-3x-40. Know that the zeroes of a function multiply to be equal to the constant (-40) and add up to the coefficient of the x term (-3). The two numbers that do that are -5 and 8. Recall that to be zeroes, at least one of the x-values must make the equation equal 0. So if x=-5, (x+5) is the term that would be 0.

You could also multiply the factored forms that are given to find the correct one.

You might be interested in

Calculate the average rate of change for the function

mezya [45]

$slope = m = \cfrac{rise}{run} \implies \cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby \begin{array}{llll} average~rate\\ of~change \end{array}\\\\[-0.35em] \rule{34em}{0.25pt}\\\\ f(x)= 2(x-2)^2+1\qquad \begin{cases} x_1=-2\\ x_2=4 \end{cases}\implies \cfrac{f(4)-f(-2)}{4-(-2)} \\\\\\ \cfrac{[2(4-2)^2+1]~~ - ~~[2(-2-2)^2+1]}{4+2}\implies \cfrac{[9]~~ - ~~[33]}{6}\implies \cfrac{-24}{6}\implies -4$

7 0

3 years ago

Ten less then quotient of a number and 3 is 8

Lesechka [4]

Answer:The answer is 6

6 0

3 years ago

Read 2 more answers

A $310 suit is marked down by 20%. Find the sale price.

loris [4]

Answer:

the answer is 62!

Step-by-step explanation:

multiply

5 0

3 years ago

Read 2 more answers

Janet is three years older than her sister Julie.Janets brother is 8 years younger Than Her sister Julie .the sum of all of thei

slavikrds [6]

x + x + 3 + x - 8

3x - 5 = 55

3x = 60, x = 20

Since we put Julie as x, we put Janet at x + 3, and the brother is x - 8 (8 years younger)

Julie is 20

Janet (x + 3) = (20 + 3) = 23

Brother(x - 8) = (20 - 8) = 12

5 0

3 years ago

What does 2 (p -q) +5 (p+q) equal when p = 7 and q = -2? Answer:

salantis [7]

Answer:

Step-by-step explanation:

Given

2(p - q) + 5(p + q) ← substitute p = 7 and q = - 2 into the expression

= 2(7 - (- 2)) + 5(7 + (- 2))

= 2(7 + 2) + 5(7 - 2)

= 2(9) + 5(5)

= 18 + 25

= 43

7 0

3 years ago

Pls help me on this i don't know what to do ​

Pls help me on this i don't know what to do