100%
e
x
there are 700 students at bowman high school. the students come from wylie middle school, parker middle school, and richardson middle
school. of the 28 students in mr. henry's gym dass, 4 are from richardson middle school.
based on this information, what is the best prediction for the number of students at bowman high school that come from richardson
middle school?
o
a
90
o a 90
ob. 100
o
c. 115
115
ooo
od. 175
o
e
220

468

step-by-step explanation:

exactly you go it

step-by-step explanation:

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)