Given the equation 5x2 − 20x + 15 = 0, what are the values of h and k when the equation is written in vertex form a(x − h)2 + k = 0?
h = 2, k = 17
h = 2, k = −5
h = 1, k = 3
h = −1, k = −3

h = 2, k = −5

Step-by-step explanation:

The given function is

We need to complete the square to obtain the function in the form:

We factor 5 from the first two terms to get:

We now add and subtract the square of half the coefficient of x.

Factor the perfect square expression within the parenthesis:

By comparing to , we have h=2 and k=-5

d

step-by-step explanation:

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.