It would 20.5, but rounded off would be 21
Answer:
lol it is 7 90 3
Step-by-step explanation:
Answer:
distributive
Step-by-step explanation:
You broke down the problem and made it longer instead of solving the parenthesies.
Pythagorean Theorem: a^2+b^2=c^2
(9)^2 + b^2 = (23)^2
81 + b^2 = 529
b^2 = 529 - 81
b^2 = 448
b^2 =

b = 21.2
Answer:
66
Step-by-step explanation:
66