Nikki is updating her house with hardwood floors. She has a maximum of $8,400 to spend. The minimum amount she can spend if she buys the cheapest hardwood flooring is $7,200. She needs enough flooring to cover 1,200 square feet. The cost for labor and other materials is $3,600. The mequality representing this situation is 7200 < 1200x + 3600 and 1200x + 3600 < 8400. What is her price range per square foot for flooring pannels?​

step-by-step explanation:

the shape,the size and the distance

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

hello from mrbilldoesmath!

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)