Your favorite cookies use 2 1/2 cups flour per batches. You used 7 cups. How many batches did you make? here are the anwser choices:
a. 3 1/4
b. 3 4/5
c. 2 4/5
d. 2 1/4

please help me​

3 and a fourth amount of bathces

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

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734