can anyone help me on these problems??

student897 · #1 $Old$ July 3rd, 2009, 07:16 PM

-7 is what percent of 56?
-what percent of 40 is 48?
-0.079/1.04

thank you!!

also can you help me understand thiss!!

Finding an equation for A in terms of N the following information

N : A
____________
1 : 1
____________
2 : 4
____________
3 : 7
____________
4 : 10
____________
5 : 13

can u help me on this one as well ....

2(x-7)+3x=6

and also this one..

(ab)(c)=c(ab)

Shyam · #2 $Old$ July 3rd, 2009, 07:20 PM

Quote:

Originally Posted by student897 $View Post$

-7 is what percent of 56?

Let x % of 56 is 7

$\frac {x\times 56}{100}=7$

$x=\frac {7\times 100}{56}=12.5$

so, 7 is 12.5% of 56

Shyam · #3 $Old$ July 3rd, 2009, 07:25 PM

Quote:

Originally Posted by student897 $View Post$

-what percent of 40 is 48?

Let x % of 40 is 48

$\frac{x\times 40}{100}=48$

FINISH it. Show your work.

Now, you try the third one.

Shyam · #4 $Old$ July 3rd, 2009, 07:30 PM

Quote:

Originally Posted by student897 $View Post$

Finding an equation for A in terms of N the following information

N : A
____________
1 : 1
____________
2 : 4
____________
3 : 7
____________
4 : 10
____________
5 : 13

What pattern of difference do you see in A?

Try to figure it out. Show your work.

The answer is

A = 3N - 2

student897 · #5 $Old$ July 3rd, 2009, 07:30 PM

ok thnxx for the help !!

i finally get it now!! thnx alott

aidan · #6 $Old$ July 4th, 2009, 08:52 AM

Quote:

Originally Posted by student897 $View Post$

-7 is what percent of 56?

Is that a negative 7?

student897 · #7 $Old$ July 4th, 2009, 09:31 AM

no its positive 7