xy=31.5 find the value of y when x is =7?

0 ⤊

2007-11-08 12:12:15 · 5 answers · asked by niceymath 1 in Science & Mathematics ➔ Mathematics

plug x=7 into the equation so 7x=31.5 then divide 7 from each side. soo... y=4.5

2007-11-08 12:17:36 · answer #1 · answered by Danny 2 · 0⤊ 0⤋

Too easy! Four and a half or so! Totally depends on the solar winds and cosmic drift though!

2007-11-08 20:17:46 · answer #2 · answered by Anonymous · 0⤊ 0⤋

(7)y=31.5

y=31.5/7

y=4.5

2007-11-08 20:18:21 · answer #3 · answered by bsbgirl4820 1 · 0⤊ 0⤋

7y=31.5
7y/7=31.5/7
y=4.5

2007-11-08 20:27:18 · answer #4 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋

answer with a calculator would be 4.5

2007-11-08 20:19:27 · answer #5 · answered by Anonymous · 0⤊ 0⤋