The Neolar
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2. If you were learner at XYZ High School, would you be happy with the method sued by Mrs Clasketo
choose learners? Explain
Mi Ghegher, the Grade 128 class teacher, was instructed to choose 10 learners from her dass. She places
Jo girls names in one container and 14 boys' names in another container. She draws 5 names out of each
container. Do you think this is a fair method? Explain. If you disagree suggest a fait method?

i think it is 18

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)

they charge the same amount at 20 minutes.

step-by-step explanation: