1. ## formula

t is proportional to the square root of d.

t = 12 when d = 4

a) What is the formula for t in terms of d?

Is this correct?

Square root of d * 6 = t

b) Calculate the value of t when d = 9

Is this correct?

Square root of 9 * 6 = 18

so the value of t = 18

2. Originally Posted by Natasha1
t is proportional to the square root of d.

t = 12 when d = 4

a) What is the formula for t in terms of d?

Is this correct?

Square root of d * 6 = t
Close I get, $\displaystyle t = 6\sqrt{d}$

3. That's what I meant. Cool thank you!