Danvddymond Posts: 1, Reputation: 1 New Member #1 Apr 11, 2005, 04:35 PM
math help
x : x + 15 = 7:12<<<< solve for x this is properties of proportions

2x-3 is to 3 as 1 - x is to 5<<<< I have no idea

p varies directly as the square of r, if p = 64, r=4, and r= 3 , find the value of p1

The volume of gas varies inversely as the pressure, if v = 100 , p= 76 , and p1= 38 , find the value of V1

I need all of this explained and solved for me because I have tried n tried somebody help me please!
 reinsuranc Posts: 92, Reputation: 6 Junior Member #2 Apr 12, 2005, 07:15 PM
I'll do the first one
I'll do the first one:

x/(x+15) = 7/12
x=(x+15)7/12
12x=7(x+15)
12x=7x+105
5x=105
x=21
 Dr_Calculus Posts: 35, Reputation: 1 Junior Member #3 Apr 15, 2005, 09:14 PM
I got number 2
This basically says that:
(2x-3)/3=(1-x)/5
10x-15=3-3x
13x=18
x=18/13
 Dr_Calculus Posts: 35, Reputation: 1 Junior Member #4 Apr 15, 2005, 09:15 PM
Uh, could you explain what u mean by r=4, r=3, p=64? I'm somewhat confused at what you are trying to say.
 beme Posts: 19, Reputation: 1 New Member #5 Sep 24, 2005, 10:50 AM
Hey I love god and I need help with god tons of times.dont ask people for the answers have a parent help you a brother sister and teachers friends are the most best if anyone want my advice email me at [email protected]

 Question Tools Search this Question Search this Question: Advanced Search

## Check out some similar questions!

What are the exact total miles in a 5k race and a 10k race?

I just wanted some helf to know the difference between factors and multiples and there similarities