Rosita wants to frame a rectangular photograph with a frame of uniform width. If her photograph measures 5 inches by 8 inches and she wants the framed photograph to have a total area of 180 square inches, how wide should she make the frame? Draw a sketch and show all of your calculations.

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step-by-step explanation:

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

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

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37