8th grade Math
posted by Mika
I'm actually in 7th grade, but I'm doing 8th grade prealgebra, but anyway, here:
I'm supposed to simplify these four problems and I don't really understand how:
28s (15 power)
____
42s (12 power)
4m+(n[7th power]m)
63m(5 power)n(6 power)
______________________
27mn
3a·4a(4 power)
______________
28a(2 power)
Thanks!

jasmine
i need help with this home work i need to write an algebraic expression for each word. 1.5 less than the prouduct of 3 and p

Charlie
3p  1.5

jessica
how do you convert .833333333333....... into a fraction

bob
what is more dense 14cm3 or 8cm3

Anonymous
five times the sum of a number and 2 is 25 find the number

Anonymous
how many tiles 15 cm square will be needed to cover a floor 5.8 m by 6.90m?

Dustin
To anonymous 5(x+2) = 35 is the equation. Pretty easy to solve from there

rovika grg
thank u very much

HomoNovus
Holy cow this question has a lot of answers!

Mrs. Smith
Make .833333333333 as a fraction

Ravi
Estimate the square root of 72 how to find it

Tissy
To Jessica and Mrs Smith
5/6=.833333333
100x=83.333333333
10x= 8.333333333

90x=75
x=75/90=5/6. 
Ginahelen
in scientific notation.
(2.74×10^7)+(5.6×10^7= 
sanchit sahu
The area of trapezium is 180cm and its hight is 9cm. If one of the parallel side ia langer then the other by 6cm, find the two parallel side.

sanchit sahu
The area of trapezium is 180cm and its hight is 9cm. If one of the parallel side ia langer then the other by 6cm, find the two parallel side.
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