Homer is giving some cookies to each of his three brothers. To the oldest, he gives
half of the cookies and half a cookie. He
then gives half of what is left and half a
cookie to his second brother. Finally, he
gives half of what is now left and half a
cookie to his youngest brother. At no
time is a cookie broken or cut. How many
cookies did Homer have to begin with?
(HINT: Work backwards.)

something over 10 so ? /10

step-by-step explanation:

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

15: 24

62.5%

step-by-step explanation:

its   c, f, a

step-by-step explanation: