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!

8th grade Math 
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

8th grade Math 
Charlie
3p  1.5

8th grade Math 
jessica
how do you convert .833333333333....... into a fraction

8th grade Math 
bob
what is more dense 14cm3 or 8cm3

8th grade Math 
Anonymous
five times the sum of a number and 2 is 25 find the number

8th grade Math 
Anonymous
how many tiles 15 cm square will be needed to cover a floor 5.8 m by 6.90m?

8th grade Math 
Dustin
To anonymous 5(x+2) = 35 is the equation. Pretty easy to solve from there

8th grade Math 
rovika grg
thank u very much

8th grade Math 
HomoNovus
Holy cow this question has a lot of answers!

8th grade Math 
Mrs. Smith
Make .833333333333 as a fraction

8th grade Math 
Ravi
Estimate the square root of 72 how to find it

8th grade Math 
Tissy
To Jessica and Mrs Smith
5/6=.833333333
100x=83.333333333
10x= 8.333333333

90x=75
x=75/90=5/6. 
math 
Ginahelen
in scientific notation.
(2.74×10^7)+(5.6×10^7= 
8th grade Math 
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.

math 
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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