2006-10-04 07:02:40 · 4 answers · asked by brandywine614 1 in Science & Mathematics ➔ Mathematics
Are you asking what number * 2/5 gives you -10?
If so, then let that number be x.
Then (2/5)*x = -10
therefore x=-10/(2/5)=-10*5/2=-25.
2006-10-04 07:10:09 · answer #1 · answered by James L 5 · 0⤊ 0⤋
if the * is the variable, then you could solve it by:
Multiplying by 5, then dividing by 2 - for an answer of -25.
You could also multiply both sides of the equation by the
reciprocal 5/2, and then simplify the result to be as listed above
2006-10-04 14:11:50 · answer #2 · answered by preichwein 3 · 0⤊ 0⤋
(2/5)x= -10
multiply both sides by 5 to get rid of the fraction
2x= -50
divide both sides by 2
x= -25
2006-10-04 15:22:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
2/5 * n = -10
2n = -50
n = -50/2
n = -25
therefore, 2/5 * -25 = -10.
2006-10-04 14:11:56 · answer #4 · answered by kettlechipsdude 2 · 0⤊ 0⤋