Answer:
3^4 = 81
Step-by-step explanation:
3x3x3x3
9x3x3
27x3=81
Answer: a^2 + b^2= c^2
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
The pythagorean theorem states that

So 
You would then do

Because a square root is the opposite of a square.

because 20 * 20 = 400
Answer:
B because the line crosses the y axis at 4 and the slope will be -1 because the line is going downhill which therefore makes it negative
hope it helps:)
Step-by-step explanation: