Example #2: Solve for d:
cd = 10

Step-by-step explanation:

All you can do is solve for d in terms of C.

Divide both sides by c

cd/c = 10 / c

The c s cancel.

d = 10/c

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.