Vocabulary Is a repeating decimal a rational number? Explain. A No, because it cannot be written in the form ab, where a and b are integers and b ≠ 0.

B No, because it cannot be written in the form a • b, where a and b are integers.

C Yes, because it can be written in the form ab, where a and b are integers and b ≠ 0.

D Yes, because it can be written in the form a • b, where a and b are integers.

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Step-by-step explanation:

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.

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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)