A school in Kent is arranged a trip for its Year 5 and Year 6 pupils. There were 3 Year 5 and 3 Year 6 classes with 29 pupils in each. They hired 4 coaches
each with seating capacity of 54.
If on the day of the trip 9 pupils reported sick and there were 12 teachers to
accompany the pupils, how many empty seats were left in total?

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

answer: it is d

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

the answer to this is a. a^2 + b^2 = c^2