Answer:
1. X=25 2. X=24
Explanation:
for the first one the equation is x=1-b/2
so... x=60-10/2
x=50/2
x=25
the second one because it's a triangle you use Pythagorean theorem
a^2+b^2=C^2 C= the hypotenuse
so... x^2+7^2= 25^2 25^2= 25*25
x^2 + 49= 625
x^2= 576 (subtract 49 on both sides)
now square root 576 = 24*24=576
x=24