D is directly proportional to t2 When t = 4, D = 8 Find the positive value of t when D = 50

t = 10

Step-by-step explanation:

Proportions

D is directly proportional to t squared. This can be written as:

Where k is the proportionality constant. It can be calculated by substituting the given condition in the formula, when t=4, D=8:

Solving for k:

Thus, the proportional relationship is:

When D=50, the value of t can be found by solving for t:

Multiplying by 2:

Taking the square root:

The positive value of t is:

t = 10

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right