Math Help Please!

1) d.
2) b.

Easy stuff, pre-algebra?

yeah, its pre-algebra. I am just starting to take it.

Added 4 more QUESTIONS!!!!

1-2 DONE!

3-6 please!!!!

and rep to both for helping on 1-2!!!

please need by tonight! thank you!

psedopost representing help on msn, solving everysingle problem (please no report for spam, I helped him, just not here on msn :), be a nice person)

lyer, l0l jp thanks dude REP to you and derek

-.- derek post here...
l0l

I got 3,4,5 done for him. #6 is one of those that I would need the book or an example problem to be able to solve. One of those types or equations I don't possess off the top of my head. Like the other 3, I use them constantly in every math class you go through...


3)
ERA = 9 * ER / IP
So this leads to plugging in numbers…
2.25 = 9 * ER / 212
Multiply by 212 to get rid of fractions - > 447 = 9 * ER
Divide by 9 to solve for ER (Earned Runs) -> 53 = ER


4)
Area of circle – > A = Pie * r^2
So Area of the circle is -> A = 3.14 * 2^2 - > A = 3.14 * 4 -> A = 12.56
So it wants what was shaven off, the excess.
The area of the whole piece is 4 * 4 (area of a square) so 16
16 – 12.56 = 3.44 – Answer ( A )


5 )
Pythagorean Theorem – A^2 + B^2 = C^2
A & B are sides/legs of the triangle, and C is the hypotenuse(the red line/the diagnol)
So C = Sqrt(50^2 + 94^2) – Answer ( D )


P.S. – anything that is ^ means and exponent. So x^2 means x squared…

ADDED new 6 questions 10/16/08 please help me here guys i get everything else except these questions!!!!

please need by 2nite! please explain! not just the answer.

I did the first three. Maybe I'll do the others later, but not right now.

1. m = -1/2
   Plug in -1 for x and 5 for y to get your y-intercept, which is the last value you'll need to write it in slope-intercept form.
   y - 5 = -1/2(x - (-1))
   y - 5 = -1/2x - 1/2
   y = -1/2x + 9/2
   
2. You need to find the slope first.
   (5 - 3) / (-4 - 2) (rise / run or change in y / change in x)
   m = 2 / -6 or -1/3
   Then, same thing as the last problem - plug in a point.
   y - 3 = -1/3(x - 2)
   y - 3 = -1/3x + 2/3
   y = -1/3x + 11/3
   
3. y-intercept of 6 means b = 6. Therefore, we know the equation will look something like y = mx + 6. Then, we can find the slope using the rise / run formula.
   (6 - 0) / (-4 - 0)
   m = 6 / -4 or -3 / 2
   y = -3/2x + 6
   
4. This is actually #5.
   Anyways, since the line y = -3 is horizontal, you'll need a vertical line to be perpendicular to it. That means x = something. The line that goes through (-4, -7) is the line x=-4.

added new question, quite easy hopefully i just hate factoring lol.

Thanks ill rep

Look in your book. I'm positive there's at least a section or some mention of factoring. Not to mention the entire internet is your resource.

The answer is (2x - 1)(x - 3) by the way.

Problem:
2x^2-7x+3

A*C = 6 so two numbers multiplies = 6 and adds to -7 (-6, -1):
2x^2-6x-1x+3

Then pull out greatest common factor (GCF)
2x(x-3)+-1(x-3) or 2x(x-3)-1(x-3)

2x multiplied by x-3 plus -1 or minus one multiplied by x-3. (btw, don't do plus negative one just do minus one for the answer, both are right but minus one looks way better).

and no need for rep, I don't care bout rep, but you can rep me if you really wanna, I just don't care one way or another.