Michael's little brother plays with building blocks that are in the shape of a cube. each cube has an edge length of 15 millimeters. what is the surface area of this cube? 15 mm² 90 mm² 1350 mm² 3375 mm²

1350 mm²

Step-by-step explanation:

The area of each square face is the square of the edge length:

... face area = (15 mm)² = 225 mm²

There are 6 square faces on a cube, to the total surface area is 6 times that of one face:

... cube area = 6 × face area = 6×225 mm² = 1350 mm²

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a