8th Grade Pre-Algebra Help

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Questions.

1. Find the distance around each square with the area given. Round to the nearest tenth.

Area of square ABCD is 500 in( Inch Square)

2. Simplify. The estimate the value of each expression.

10?20 + 5?320

3.Find the side length in each right triangle.

if b=24 and c=26, find a

4.Solve each equation for the given variable.

y=-2x+b for x
ab+c=4 for a

5.Solve and graph

-8 < t/2 ( 1/2 is a fraction not division)
-5p>15
9 >-b/3
 
Denis said:
Show what you can do; we can't help otherwise...
Click to expand...

I like that tag-line - I am going to appropriate that .....
 
charmed4ever said:
can anybody help me with this problem:
(3a^2)^3
Click to expand...

Please look at the responses to the INITIAL question in this thread. To help you get past where you are stuck we need to understand what YOU know and what YOU have done so far?

What have you done?
Do you know the laws of exponents?
Do you know how to compute the power of a product. For example, what does (xy)[sup:3hd60e9r]z[/sup:3hd60e9r] = ?
 
AmandaCollette said:
Can Anyone Help Me With This Problem .?
r = 42cm; A= ?
Click to expand...
Please look at the responses to the INITIAL question in this thread. To help you get past where you are stuck we need to understand what YOU know and what YOU have done so far?

It looks as though you are being asked to compute the area of a circle. Do you know a FORMULA for the area of a circle? Is there one in your textbook? If you know a formula, where EXACTLY are you stuck?
 
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