Write the indicated expressions. A. 1/2m inches in feet
B. The perimeter of a square with 2/3g cm sides
C. The number of pounds in 9 oz
D. The average speed of a train that travels x miles in 3/4 hour
E. Devin is 1 1/4 years younger than Eli. April is 1/5 as old as Devin. Jill is 5 years older than april. If Eli is E years old, what's Jill's age in terms of E?

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

did you get the answer yet?

step-by-step explanation:

the answer is two. hope this !

a

step-by-step explanation: