practice is 90 minutes long. What is an expression for the number of minutes left after m minutes have elapsed

0 ⤊

2007-09-06 11:35:24 · 3 answers · asked by Vanessa S 1 in Science & Mathematics ➔ Mathematics

Let the time elapsed is x, and the time left is y

x+y = 90

2007-09-06 11:40:17 · answer #1 · answered by ? 5 · 0⤊ 0⤋

To figure out how many mintues you have left, you subtract the minutes elapsed from the total number of mintues. So, the number of minutes left=90-m

2007-09-06 18:40:54 · answer #2 · answered by Sarah R 1 · 0⤊ 0⤋

l = 90 - m

2007-09-06 18:42:13 · answer #3 · answered by Beardo 7 · 0⤊ 0⤋