Posted by Mika on .
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.