It should be
3cm
1.3cm
7in
the pythagorean theorem is that the two smaller sides is equivalent to the biggest side. (A+B = C)
Answer: -1 and 4
Explanation: the others aren’t because they have variables in one and numbers in the other
Answer:
(5.5,8.5)
Step-by-step explanation:
(8+3)÷2=5.5
(15+2)÷2=8.5
Answer:
Part 1) 
part 2) 
Step-by-step explanation:
we have

Adds the terms
Group terms that contain the same variable

Combine like terms

where

therefore
