the expression is 27a^3 or (3a)^3
Knox can run 6.41 miles in one hour
The rectangle looks like
A —— B
D —— C
so AB = 84
BC = 63
AD = 63
CD = 84
Answer:
9
Step-by-step explanation:
This is a right triangle. We can use the Pythagorean theorem to determine the missing side.
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
a^2 + 12 ^2 = 15^2
a^2 +144 =225
a^2 = 225-144
a^2 = 81
Taking the square root of each side
a = 9
