In a jar of coins, the ratio of nickels to dimes is 5: 7. if the jar contains 350 dimes, how many nickels are there? a) 200 b) 225 c) 250 d) 500

5/7 = n / 3505 nickels to 7 dimes = n nickels to 350 dimes
this is a proportion so we cross multiply
(7)(n) = (5)(350)
7n = 1750
n = 1750/7
n = 250so there are 250 nickels

You need to divide 210 square inches by 35 inches and that’s going to give you 6 inches and that’s the length of the hypothenuse of the right triangle i hope that this you : )