Amy and Myra each walked from their houses to the mall. Amy walked one half a mile and Myra walked two-thirds of a mile. How far did the girls walk all together? A.3/5
B.5/6
C. 1 1/6
D.1 5/6

1/2 + 2/3 = 1 1/6

Step-by-step explanation:

C.

Step-by-step explanation:

1/2+2/3=x

x=miles traveled

1/2=3/6

2/3=4/6

3/6+4/6=7/6

7/6=1 1/6

C.

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