*** ***you want to run 26.2 miles in 3.5 hours or less. which inequality describes the rate, r, you should maintain to meet your goal? r ≥ 26.2/3.5 - a r ≥ 26.2 - 3.5 - b r = 26.2/3.5 - c r ≤ 26.2/3.5 - d

eve and marks ratios are equivalent

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