Park rangers at a game preserve in Africa observed a cheetah run 3 3/5 miles in 1/20 hour. What was the cheetahs speed in miles per hour (mph)? A. 9/50 mph
B. 5 5/9 mph
C. 72 mph
D. 92 mph

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.