Genny is making bracelets for her friends. She can make 3 bracelets in 15 minutes. How long will it take Genny to make a bracelet for all 10 of her friends?

50 minutes

Step-by-step explanation:

15 / 3 = 5

5 x 10 = 50

Answer

50 minutes

Step-by-step explanation:

If Genny makes 3 bracelets in 15 minutes, she can make 9 bracelets in 45 minutes.

9/3 = 3

3 x 15 = 45 minutes

She needs to make one more bracelet. It takes 5 minutes to make one bracelet because: 15/3 = 5/1 (Five minutes = One bracelet)

45 mins + 5 mins = 50

0.50 , 0.75

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