My take on it:
I used ##W = Rt## where ##W## is work done, ##R## is rate and t is the time taken
let ##W = 1## and ##t## be the time taken by lambert.
for Lambert:
##1 = R(t)##
##R = \frac{1}{t}## ............ (1)
for Stassen:
##1 = \frac{r}{(3t/2)}##
##r = \frac{2}{(3t)}##..........(2)
from...
Hello,
Recently I viewed a blog post about SAT Math preparation. It stated that quadratics is the chapter which is most asked in SAT, and if I don't master the chapter, I can't answer most SAT problems. IMO, this statement above implied that quadratics (quadratic equation) is the core chapter...
Homework Statement
A salesperson's commission is k percent of the selling price of a car. Which of the following represents the commission, in dollars, on 2 cars that sold for 14,000 each?
Homework Equations
28,000*k (I thought that this answer was corrects since a percent is always part of...
sat math, "test-taking abilities," math ability
hey all,
are there good reasons for scoring low on the sat that do not stem from poor math ability?
what do these 'test-taking abilities' consist of and how do they operate?
i took a practice test today and i scored in the 580 range. now, i...
How do you guys think the SAT, manily the math section accurately judges ones ability? I have heard people say if you get below x, usually 600 to 700 you will never succeed in engineering or physics. I would think its more on how much you study and that the SAT is there more tovtrick you any...
I've actually already completed my first year of college, with quite modest results. Something which has been causing me quite a bit of psychological bother though is whether or not my SAT math score is a reflection of some kind of natural ability or intelligence, rather than a reflection of...
Hello everyone, I'm currently in high school and will be applying to universities this summer. I recently took my SATs and, although I did pretty well on the english sections (Writing=650 and Reading=600), I was extremely disappointed by my maths score (640). Now I'm not generally weak in maths...
For these four practice problems, I had little idea what the hell to do (plugging in seemed worthless), could anyone help? Sorry if this isn't what the board is suppose to be used for. Answers in spoiler tags.
If k and h are constants and x2+kx+7 is equivalent to (x+1)(x+h), what is the value...
Few questions...
1. I can't do inequalities with the regular TI-89...but the titanium can. Is it possible to transfer the titanium os to the 89?
2. http://img.photobucket.com/albums/v407/ammad/sat1.jpg
This is an SAT question. To answer this question I thought I could just solve the system...
I'm taking the SAT II subject tests saturday and I know it's a bit late but I need to cram. I have done barron's for math and spark notes book for chemistry and I consistently get around 620's on both. I'd like to get above a 700 but I'm having trouble.
1. Are these all of the formulas I...
Homework Statement
(n/(n-1)) x (1/n) x (n/(n+1)) = 5/k for positive integers n and k, what is the value of k>
Homework Equations
The Attempt at a Solution
I multiplied the left side out to be (n/(n^2-1) and set it equal to 5/k
I got stuck right there.
Homework Statement
In a Mixture of peanuts and cashews, the ratio by weight of peanuts to cashews is 5 to 2. how many pounds of cashews will there be in 4 pounds of this mixture?
Homework Equations
The Attempt at a Solution
I used 5/2 as seven pounds in the original ratio...
Homework Statement
If a, b, c, and f are four nonzero numbers, then all of the following proportions are equivalent EXCEPT
(A) (a / f) = (b / c)
(B) (f / c) = (b / a)
(C) (c / a) = (f / b)
(D) (a / c) = (b / f)
(E) (af / bc) = (1 / 1)
Homework Equations
None
The Attempt at...
Hey fellas,
I'm giving my SAT subject tests in Dec 2008, And I would like to know where I can give practice tests for : Math 1-2, Physics ??? Please Help, as I intent to score 800 on all three of them. I presently use Princeton for both math, barrons for physics; but the practice tests are'nt...
Homework Statement
\sqrt{x^{2}-t^{2}}=2t-x
If x and t are positive numbers that satisfy the equation above, what is the value of \frac{x}{t}?
2. The attempt at a solution
x^{2}-t^{2}=4t^{2}-x^{2}
x^{2}+x^{2}=4t^{2}+t^{2}
2x^{2}=5t^{2}
I'm unsure of what to do next.
Homework Statement
A small company has some free movie tickets to distribute to its employees. If each employee gets 5 tickets, there will be 15 left over. If 5 employees will receive 7 tickets, and none will be left over. How many tickets does the company have?
Homework Equations...
If point P(m,2m) is 5 units from the line 12x+5y=1, m could equal
a. 43/11
b.-3
c.-65/22
d.5
e.3
The answer is E.
Explanation given in book:
- distance = abs(12(m) + 5(2m) -1) / root(144+25) = 5.
>>> m=3 or -32/11
I do not understand this explanation (of course finding m from...
Here are some SAT II Math IIC Questions that I have. Fun! :biggrin:
I'm in the chapter of "Higher-Degree Polynomials" right now and I have some questions concerning some facts:
How do these work?:
1) "The Remainder Theorem- If a polynomial P(x) is divided by x-r (where r is any...
What is the best precalculus text book in your opinion that gives good examples and problems for you to practice on? Organization and the easy level of ability to comprehend would also be nice.
What's the best Precal textbook that would prepare me for the Math IIC? I'm looking for one that has lots of examples, can be understood easily, and includes a lot of practice problems for you to practice on. Thanks.
To make an orange dye, 3 parts of red dye are mixed with 2 parts of yellow dye. To make a green dye, 2 parts of blue dye are mixed with 1 part of yellow dye. If equal amounts of green and orange are mixed, what is the proportion of yellow dye in the new mixture?
This is not a homework...
When you divide any positive integer by 3, the remainder must be less than or equal to 2.
Does this hold true for all integers from 2-9?? I've tried it with 10 but it doesn't seem to work, nor 1 because anything divided by 1 is itself; 0 has the same issue.
Please give your insight about...
At the first stop on its route, a bus picks up x passengers. At the second stop, y passengers get on the bus. At the third stop, 2/3 of the passengers exit the bus. At the fourth stop, 2 passengers get on the bus. How many passengers is the bus carrying right now?
a) (3x+3y+4)/3
b) (2x-2y-4)/3...
I'm trying to practice doing the SAT math 2 this summer, and I realize that I just couldn't keep up with the pace of the test. I took the test once and I got a 670 with 10 questions that I didn't have a chance to finish.
I also want to take the chemistry portion of the SAT, but I have never...
Okay, so I have... problems with math. As in, we repell. Big time. Right now I'm working towards my SATs, which I'm hoping to take this summer. I was wondering if anyone could give me the basics of what they'll test me on? I bought an SAT book, and I've been looking online, but I'm still fairly...
The College Board's website contains a "SAT question of the day" feature. As I'm going to be taking my SAT I's (as well as three SAT II tests, lucky me) in the near future, I check it on a regular basis in conjunction with the rest of my studies.
Today's question seems completely crazy...