Suppose u={0, 1, 2, 3, 4, 5, 6}, a={2, 4, 6}, and b={1, 2, 3}. tell whether each statement is true or false. a⊆u true or false

That asks if A is a subset of U.  Since each member of A, namely 2, 4 and 6, is also in U, A is indeed a subset of U.

TRUE

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

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