A electric store wants to order at least 3 times as many DVD players as VHS players. Write an inequality expressing this relationship.
solve 2/5x=-10
solve 80=10x
2006-12-12 06:27:02 · 7 answers · asked by Jyres JJ 1 in Science & Mathematics ➔ Mathematics
4(7x+10)=3(9x-5)+20 reduces to X = -35
Plug -35 in for X
:)
2006-12-12 06:33:53 · answer #1 · answered by arcaemous 4 · 0⤊ 0⤋
1.) 28x + 40 = 27x - 15 + 20
x = -35
2.) x = dvd, y = vcr; 3x = y (3 times as many would not create an inequality expresson as the # of dvd's varies directly with the # of vcr's)
3.) 2 = -50x
x = -1/25
4.) x = 8
2006-12-12 14:36:01 · answer #2 · answered by p_rutherford2003 5 · 0⤊ 0⤋
4(7*+10)=3(9*-5)+20
395 is ans
80=10x
ans =8
2006-12-12 14:45:24 · answer #3 · answered by momy 1 · 0⤊ 0⤋
Something tells me, you've got it wrong. What's the 4 for?
7x10=70 3x9=27 4divided by 7 can't be done, nor can 2 divided by 5 because only a higher number can be divided. 17 divided by 4=4.25.
2006-12-12 15:00:50 · answer #4 · answered by Anonymous · 0⤊ 0⤋
1)28x+40=27x-15+20
28x+40=27x+5
28x-27x+40-40=27x-27x+5-40
x= -35
2) #VHS players=V #DVD players=D
V is greater than or equal to 3D
3) x= -25
4) x= 1/8
2006-12-12 14:36:00 · answer #5 · answered by SPORTS GUY 4 · 0⤊ 0⤋
1. x=-35
2.dvd>3vhs
3.x=-25
4.x=8
2006-12-12 14:35:00 · answer #6 · answered by teacher 1 · 0⤊ 0⤋
x = -35
2006-12-12 14:34:28 · answer #7 · answered by Anonymous · 0⤊ 0⤋