Quadruple one fifth of some fraction that is greater than zero. Then, multiply the result by the fraction again to get the product 1\5. What is the fraction?
2006-11-01 13:21:29 · 6 answers · asked by azizka93 3 in Science & Mathematics ➔ Mathematics
The answer is 1/2. To solve it... use algebra. Use X to represent the unknown fraction. Turn the word problem into a numerical expression. It will look like this: 4(X/5) x X = 1/5. the little x is times. simplify and you get 4X^2/5= 1/5. then simplify again and you get 4x^2=1 Then x^2= 1/4 then x=1/2 ta da!
2006-11-01 13:34:08 · answer #1 · answered by Anonymous · 0⤊ 0⤋
x=1/2
2006-11-01 21:42:23 · answer #2 · answered by derek6711 3 · 0⤊ 0⤋
1/2
2006-11-01 21:24:27 · answer #3 · answered by hot.turkey 5 · 0⤊ 0⤋
To quadruple one fifth means to multiply by 4/5. So (4/5)x^2 = 1/5 ==> x = sqrt((5/4)(1/5)) = sqrt(1/4) = 1/2. So the answer is 1/2.
2006-11-01 21:23:56 · answer #4 · answered by DavidK93 7 · 0⤊ 0⤋
4/5 * x² = 1/5
x² = 1/4
x = 1/2 (as x > 0)
2006-11-01 21:28:37 · answer #5 · answered by Wal C 6 · 0⤊ 0⤋
math nerds galore!!!!!! lol!
2006-11-01 21:29:11 · answer #6 · answered by Anonymous · 1⤊ 0⤋