Math Final Tomorrow

[Brandeis]

Ok these are the questions I need answered guys. Remember this is math B.
Key:
Rad- Radical

1. Solve for x:
2 9 (1
-- = -- + --
x 2 (2x


2. Write the solution set for:
3 Rad 2x + 5 - 15 = 0


3. Midpoint forumla
(I dont quite remember this one)


4. Write the solution set for:
Rad 2x + 1 + 5 = x + 4


5. Simplify:
1 (16
-- (-) --
1 (x(squared)
-------------(over)
1 3 (4
-- + -- (-) --
1 x (x(squared)


6. Preform the indicated operation and simplify:
x(squared) + 3x - 10 (x(squared) + 5x
-------------------- x ----------------
x(squared) (x - 2


7. Solve for z:
1 2 (3
-- + ---- = --
4 z + 3 (8

Thanks, if you can solve them I might be able to pay you some rsgp, your you can join my forum and be instant VIP.

 

[Fire_Ant_X]

i'm not understanding what the question is in most of the problems you have there. if you rewrite it in an easier to understand format (like with parentheses and '/' for fractions) i would help you out.

 

[Brandeis]

1
--
8

Not that hard to understand. Its 1/8.

Edit. It edited the spacing. Just move the number farthest down. They are now seperated by a (.

 

[el-loco-uno]

Welp, since you posted this yesterday, mind telling us how you did?

 

[itzkirby]

Not sure about most questions because of the weird spacing. Use paint and draw it out, looks better.

Yea, #1 is 1/8

3. (X1 + X2) / 2 , (Y1 + Y2) / 2

This is very easy, just the averages of the 2 X and Y coords.

AND

7. x = 21

If you wanna know how to do it, Ill show you.

 

[Brandeis]

Ok could you please show me how you got z=21 then?

 

[Awezum]

Oh my GAWD my BRAIN is FUZZLED.

I dnt wana do that kind of math later on :S

Hope u did well.. i wudda hit the floor hard.

 

[itzkirby]

Aww crap, I redid it and got 13. 13 seems to be right, musta have been late at night when I solved it last time. Yep, misread a 2 as a 3.

First you isolate the variable by finidng the right denominators and subtracting it. Then you cross multiple and the rest is self explanatory.

 

[Brandeis]

No the problem is:

 

[itzkirby]

Yea that should be right, unless you're confusing my 2 and the 'z'. The 2 is on top and z+3 on bottom.

1/4 + 2/16 = 3/8

 

[s m i t e]

awesome math!

 

[Phil]

1/4 + Z/2+3 = 3/8

1/4 + Z/5 = 3/8

10/40 + 8Z/40 = 15/40

8Z = 15

Z = 1.875






Not sure if that's what you mean or not.

 

[itzkirby]

7. Solve for z:
1````2`````3
-- + ---- = --
4````z+3```8

If you quote him then you'll see what he was trying to write, from this z=13.

 

[mcnuggetman]

dude google ummm crap what was it the disriputive property on google and it should all be easy