Mr. Coates wants to buy his 4th period Ice Cream and cones. Each cone has a diameter of 2 inches and a height of 3 inches. If Mr. Coates decided to purchase 20 cones of ice cream, how many cubic inches of ice cream does he need for the entire classroom? Round your answer to the nearest tenths.

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

positive

step-by-step explanation:

the quadrant is facing upwards

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get