Carly has 16 bananas she uses 5 of them to make banana bread .evan has 12 bananas. how many should he use so he has the same number as carly

one

Step-by-step explanation:

16 minus 5 is 11. 12 minus 1 equals 11. now they are equal

1

Step-by-step explanation:

After deducting the 16 bananas Carly used to have by 5 for the recipe. She now has 11 and in order to put Carly and Evan on the same page he only needs to take away 1.

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