Some animals on farms eat hay to get energy. A horse can eat 20 pounds of hay each day. Write and evaluate an expression to find how many pounds a group of 17 horses can eat in two weeks.

The amount of hay these 17 horses can eat in 2 weeks is 4,760 pounds.

Step-by-step explanation:

It is provided that a horse can eat 20 pounds of hay each day.

There is a group of 17 horses.

Compute the amount of hay these 17 horses can eat in 2 weeks as follows:

Thus, the amount of hay these 17 horses can eat in 2 weeks is 4,760 pounds.

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