Yuna finds a box with an open top. each side is 8 inches long. if she fills this box with identical 2 in by 2 in by 2 in cubes, how many of these cubes will be touching the box?

52 cubes.

Step-by-step explanation:

The number touching the opposite sides of the box =  2* 4*4 = 32.

The number touching the other 2 sides =  2* 2 * 4 = 16,

The number only touching the bottom =  4 .

Answer  52

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

4 candies

step-by-step explanation:

7 x 28 = 196

200 - 196 = 4 candies remaining.