Why is the number 39 odd?

Because when 39 is divided by 2 it has a decimal.

Step-by-step explanation:

39 ÷ 2 = 19.5

Step-by-step explanation:

because it doesn't divide by 2, any number that doesn't divide by 2 is a odd number, and any nr that doesn't leave a remainder and divides by 2 is even

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