A quantity is decreased by 10%, find the decrease, as a percentage for x^2

Question

0

784

1

Guest Jun 2, 2015

+33654

+5

Best Answer

Do you mean x is decreased by 10% and you want to know the decrease for x²?

If so x_decreased = 0.9*x so x_decreased² = 0.9²x² = 0.81x²

This means x_decreased² is 81% of x², which means the decrease is 19%

.

Alan Jun 3, 2015

Alan · Answer 1 · 2015-06-03T07:40:49

Do you mean x is decreased by 10% and you want to know the decrease for x²?

If so x_decreased = 0.9*x so x_decreased² = 0.9²x² = 0.81x²

This means x_decreased² is 81% of x², which means the decrease is 19%

.