Which number is a factor of 18 but not a multiple of 9

6

Step-by-step explanation:

Note the factors of 18: 1, 2, 3, 6, 9, 18

Note the multiples of 9: 9, 18, 27, etc.

As you can tell, 1, 2, 3, 6 are all not multiples of 9, but factors of 18, and can be your answer.

~

yes   because as the functions are graphed they eventually will intersect unless otherwise

step-by-step explanation:

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