Helen got a $7 reduction in the price of a pair of jeans that are normally $32. What is the approximate percent decrease in the price? The percent decrease is approximately 15%. The percent decrease is approximately 21%. The percent decrease is approximately 43%. The percent decrease is approximately 78%.

The Answer is B.

Step-by-step explanation:

I took the quiz on Edge.

The percent decrease is approximately 21%.

Step-by-step explanation:

Edge 100% Correct

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15