Solve the equation and express the solution in decimal form: 1.46x + 1.48(450 - x) = 661.5
2007-10-21 17:46:10 · 6 answers · asked by jane 1 in Science & Mathematics ➔ Mathematics
1.46x + 1.48(450 - x) = 661.5
1.46x + (666 - 1.48x) = 661.5
1.46x + 666 - 1.48x = 661.5
(1.46x - 1.48x) + 666 = 661.5
-.02x + 666 = 661.5
666 = 661.5 + .02x
666 - 661.5 = .02x
4.5 = .02x
4.5 / .02 = .02x / .02x
225 = x
x=225
2007-10-21 17:53:52 · answer #1 · answered by wcogent 6 · 0⤊ 0⤋
1.46x + 1.48(450 - x) = 661.5
1.46x + 666 - 1.48x = 661.5
0.02x = 4.5
x = 225
Answer x = 225
Proof:
1.46(225) + 1.48(450 - 225) = 661.5
328.5 + 1.48(225) = 661.5
328.5 + 333 = 661.5
661.5 = 661.5
2007-10-22 01:25:52 · answer #2 · answered by Jun Agruda 7 · 2⤊ 0⤋
1.46x + 1.48(450 - x) = 661.5
146x + 148(450 - x) = 66150
146x -148x = 66150-66600
-2x=-450
x=450/2
x=225
2007-10-22 00:51:14 · answer #3 · answered by iyiogrenci 6 · 0⤊ 0⤋
1.46x+ 1.48(450-x)=661.5
1.46x+ 666- 1.48x=661.5
-.02x=-4.5
-.02/-.02=4.5/.02
x=225
2007-10-22 02:24:53 · answer #4 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
you need to do your own home work or you will never learn.
2007-10-22 00:48:46 · answer #5 · answered by art_flood 4 · 0⤊ 0⤋
" What the???? "
2007-10-22 00:49:01 · answer #6 · answered by Anonymous · 0⤊ 0⤋