Wednesday
July 1, 2015

# Homework Help: (Math)Literal Equations and Formulas HELP!

Posted by Gabby on Saturday, September 28, 2013 at 6:50pm.

1) Solve for p.
3(p+q)=p
(1point)
Q=-2/3p
Q= -3/2/p
P= -2/3q***
P=-3/2q

2) Solve for b, then find the value of b when a=3.
4a=2b-7 (1point)
-9/2
5/2
19/2
17***

3) Solve for r.
D=rt (1point)
R=dt***
R=t/d
d/t
r=d-t

4) Find the width of a rectangle with a perimeter of 90 and a length of 15. (1point)
90
15
45***
30

Ok, Am I correct, I need to make sure to get these right because if I do, I get the rest of the day off… not that you might care but still.
• (Math)Literal Equations and Formulas HELP! - Reiny, Saturday, September 28, 2013 at 6:59pm

1.
3p+3q = p
2p = -3q
p = -3q/2 , which is the last one, not yours
You just have to mind your p's and q's

2. 4a = 2b-7
4a+7 = 2b
b=(4a+7)/2 = (12+7)/2 = 19/2

3. D = rt
r = D/t

4. totally wrong!!!!
If the width is 45, then the two widths together would be 90.
But the whole perimeter is already 90

You missed All of them!!!
Wow, looks like you don't get the rest of the day off, and you have lots of studying to do

• (Math)Literal Equations and Formulas HELP! - Gabby, Saturday, September 28, 2013 at 7:22pm

Sorry to disappoint you :(

• (Math)Literal Equations and Formulas HELP! - Gabby, Saturday, September 28, 2013 at 7:25pm

But to make it up I will study all weekend so that I improve! :D