A car drives 5 1/2 miles in 1/12 hour. What is the speed of the car in miles per hour?

The car is going 66 miles per hour.

Step-by-step explanation:

If in 1/12 of an hour, the car has gone 5.5 miles, then you must find how far it would go in an hour. To do this, multiply 5.5 by 12 to get 66, how far it went in miles in an hour. This would be the speed it is going: 66 miles per hour.

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)

just pick what you think i need more time let me know if this

step-by-step explanation: