A surveyor drew triangles to determine the distance across a lake from point D to point E, as shown diagram below. If∠ABC≅∠ADE∠⁡A⁣B⁣C≅∠⁡A⁣D⁣E, which of the following best represents ¯¯¯¯¯¯DED⁣E¯, the distance across the lake? a.7 miles
b.18 miles
c.21 miles
d.24 miles

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step-by-step explanation:

should you really be posting this isn't math boi.

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

it alot will look like this 4.4

3

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