Paula bought a ski jacket on sale for $4 less than half its original price. She paid $86 for the jacket. What was the original price?
The original price was $

180

Step-by-step explanation:

4+86=90 which is half price

90x2= 180 which is original price

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

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: