Answer:
A
Step-by-step explanation:
We have to multiply it by two because they have us 2 numbers for the legs, we use the Pythagorean theorem thing, but we have to basically add them, or we can multiply y 2(since they are the same number). Anyways 
Answer:
I need points
Step-by-step explanation:
hhhccchhxjcjc
Answer:
x=3
Step-by-step explanation:
7x-3=18
7x=18+3
7x=21
x=3
There is approximately 10 cards at the start