Afruit stand sells 6 oranges for $3.00 and 3 grapefruit for 3.60. kenny buys 10 oranges and 11 grapefruit. how many much does kenny spend on the fruit?

Kenny spends $21.50 on fruit

6 oranges = 3 dollars

divide both sides by 6 to get $0.50

3 grapefruits = $3.60

divide both sides by 3 to get $1.50

multiply the $0.50 by the amount of oranges Kenny buys

multiply the $1.50 by the amount of grapefruits Kenny buys

add the two amounts to get the final amount of money Kenny spent on fruit

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94

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