The ratio of boys to girls at a movie is 4 font size decreased by 5 : font size decreased by 5 7. if there are 21 girls, how many boys are at the movie?

no solution

step-by-step explanation:

there is not enough information in the problem to solve.

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c