Use the Pythagorean theorem to solve:
BC = sqrt(21^2 + 72^2)
BC = sqrt(441 + 5184)
BC= sqrt(5625)
BC = 75
Answer is F
It is 45 and 67 I remember this from boating school 5 times a second in 11
An expression to represent a decimal between 1 and 10 multiplied by ten. basically to write larger numbers with less digits.
ex . 100 = 1 x 10^2
ex. 4321= 4.321 x 10^3
