Each small cube is 1 cm3. the length of the large cube is 12 cm.

what is the volume of the large cube?

864 cm3

144 cm3

24 cm3

1,728 cm3

1728cm^3

Step-by-step explanation: When calculating volume you take area multiplied by "depth" or whatever you wish to call it. So in this case you take 12*12 as you would in a square, then multiply that by the "depth" which is also 12 and you get the answer. 12*12*12 or 12^3 and thus you get 1728cm^3

it would take 7/10 of an hour too fill the pool.

step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9