You have ten blankets that each take up 686 cubic inches of space how many blankets could you pack into an 18 inch box

8 blankets.

Step-by-step explanation: The total volume of the moving box is (18)³ = 5,832 cubic inches. Since each blanket takes 686 cubic inches, the box will hold ≈ 8.5 or 8 blankets.

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb