Answer:
D) 24.5
Step-by-step explanation:
use the pythagorean theorem.

Plug in the values. 
a+ 625 = 1225
then solve for a by subtracting 625 from 1225 = 600
√600= 24.5
Answer:
200-2 = 198
Step-by-step explanation:
If you have 200 apples and you eat two you have 198 apples
Answer:
Step-by-step explanation:
Simplifying
3y + -2y = 1
Combine like terms: 3y + -2y = 1y
1y = 1
Solving
1y = 1
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Divide each side by '1'.
y = 1
Simplifying
y = 1
A quadrilateral is a polygon. [always]
X= a+b+c+bx/a(x-b) but I’m not completely sure