Why should you subtract 10 x 6 and not 9 x 6 or 20 x 6

John earned $38,000 last year. He paid $6,840 towards entertainment. What percent of his earnings did Jon pay in intertainment expenses?

Juan is 4 feet tall. Marina is 52 inches tall. who is taller? explain your awnser.

Do they mainly have canals (waterways) as their primary means of travel

How is the interest rate one of the biggest factors in calculating finance charges of credit cards?

Barbara sells iced tea for $1.49 per bottle and water for $1.25 per bottle. She wrote an equation to find the number of bottles she needs to sell to earn $100. 1.25x + 1.49 = 100 What error did Barbara make in writing the equation?

Find the area 3ft 4ft 9ft 5ft

The product of 7 and a nimber increased by 3 is equal to twice the number subtracted from 39

F (x) = 3x-1 and g (x) = x+2 find (f+g) (x)

Cosxsinx-2cosx=0 I dont know how to solve this

A figure has two pairs of parallel sides but has no perpendicular sides. Its sides are not all the same in length. What is the figure?