greg and kristen are on opposite ends of a zip line that crosses a gorge. greg went across the gorge first, and he is now on a ledge that is 15 m above the bottom of the gorge. kristen is at the top of a cliff that is 72m above the bottom of the gorge. jon is on the ground at the bottom of the gorge, below the zip line. he sees kristen at a 65 degree angle of elevation and greg at a 35 degree angle of elevation. what is the width of the gorge to the nearest metre

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step-by-step explanation:

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step-by-step explanation:

step-by-step explanation: it is d

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

discussion:

in general, the factorization of a^3 + b^3 is

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

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

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

you,

mrb

(a + b) (a^2 - a b + b^2)