Can someone help me on some Mathematics please?

Question

I am brushing up on some basics for a big test on March 13 at a college. It's placement testing, which is a test that shows your skills in math and reading and writing. Depending on the scores, they will put me in a lower math class or higher. I don't care for which one, but I need help studying math. If anybody is even interested, they can look at this page which will explain a little better of what I need to study.

It's simple to you guys, but for me, I'm an 18 year old calculator user. I almost don't depend on my brain so sadly it's turned to mush. If any body knows any good sites that help people study for math, than please show me!

Also, can any of you help me with this equation?

348.4 = 752
------- ----
16.4 = X

I don't want the answer so don't tell me. WHat I want to know is how these type of questions are answered. What are the steps?

Thank You.

http://www.pct.edu/advise/placementtesting/math.htm

Info on that test

Answer 1

348.4x=(752)*16.4
x=(752)*(16.4)/348.4

Answer 2

Answer to your websites question: Google by searching for 'math tutorial' and you will find plenty of websites that will help you step by step to improve your math skills. But my question is: what is wrong with taking a lower math class? You will learn what you need to learn and it is up to you whether you stay 'math-lazy' the rest of your life! You will be more confident taking another, higher-level math class if you take a lower college-level math class first. Why would you want to get into a higher-level math class right off the bat and most certainly do badly?
There have been studies that show the more math you learn, the more earning potential you have. Think about it - it is all about performing well in life, not just on tests, and you will need math if you want to earn a bigger paycheck, generally speaking. If you have poor math skills, you are more likely to make math mistakes, which will cost you short-term and long.
That said, learning math takes time, textbooks and tutorials. Three T's.
If you work a solid three hours a day, including weekends, until you know the material backwards and forwards, you can practice problem-solving and review what you do know and find out what you don't know. You'll be surprised in both categories.
There aren't any shortcuts to becoming a good musician. You can have natural talent but you have to practice daily and the competition is so fierce that the person who practices more will have an edge. Math's like that, too. So's learning a language. It is time out of your day every day to learn things but that's going to be what college is all about anyway.
The nerdy guy who does well in math worked hard in high school and even the lower grades; it took just as much time for him to read and listen and work problems. But since math topics are building blocks, you master one topic and then go on to the next. If you didn't master the first, the second will be harder. The nerdy guys and girls just did that and it looked easier as they went along because they didn't stumble so much. No one, not even they, ''got it" the first time it was explained, every time.
Good luck!
The problem you wanted explained looks like a ratio. To me it reads: 348.4 is to 16.4 as 752 is to x.
If you said the same thing about '2 is to 4 as 1 is to x', it would be the same kind of ratio problem.
You would work the 2/4= 1/x problem like this:
2 times x = 1 times 4
2x = 4
You always want to isolate the variable (your unknown) on one side of the equation. Divide both sides by 2 so that the result is just one x on one side. This results in (2/2)x = (4/2). This is 1x = 2. Your x value is 2. An equals sign says 'what's on the left side' is the same as 'what's on the right side'.

Answer 3

I don't know any good math sites, but I can help you with the equation.... it's called cross multiplication. Basically, you multiply diagonally and solve for x. So, your next steps would look like this...

(752)(16.4)=348.4x
12332.8=348.8x
12322.8/348.8=x

I hope that helps you. Good luck with your test!

Answer 4

to exercise my brain what i find helps me is
memorizing your times tables up to atleast 12
start simple and then do complicated math problems in your head
try not to use a calculator until the test
thin of each math question as a challenge , and to see how smart you are. it really motivates you.
read
*my theory is that this will stimulate your brain. sure its simple stuff but its helped me maintain high grades in math. i have had averages in the 90's my whole high school (three years at the moment)

Answer 5

Wait- this is 4 college?
I just learned this last week-
and I'm in 6th grde!
I'm sorry 4 u.
I learned on Tues, that u must cross multiply=
a/d=b/c
or something.
This is always true unless it is not equal.

Answer 6

I see that others have posted pretty good explanations of the equation...

But I my experience if you check out MathWorld (Wolfram) - that's an EXCELLENT site.

Answer 7

Cross multiply.

If a/b = c/d then it is also true that
ad = bc

Answer 8

cross multiply and divide i believe will work. and knowing how to cross multiply and divide has been very useful to me in life