Joe walked four over nine of a mile in four over five of an hour. What is his unit rate in miles per hour? A. four ninths over four fifths = five over nine mile per hour
B. four fifths over four ninths = one and four fifths miles per hour
C. four ninths over four fifths = one and four fifths miles per hour
D. four fifths over four ninths = five over nine mile per hour

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

his chances of getting a coin of higher value is 4/19

step-by-step explanation:

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: