1) Which of the following is a measurement of length? A; the amount of water in a pool

B; the height of a building
how many blocks of concrete cover a sidewalk

C;the amount of writing space on a page

D; the height of a building

44

step-by-step explanation:

i think 5 miles per hour

step-by-step explanation:

the answer is (-4,-4)

hope this ! : d

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