Recent content by dragon513

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    Is Vertical Compression Correctly Applied in This Function Transformation?

    Q. Given f(x)=2(x^2)-4 , determine the new equation g(x) after a vertical compression by a factor of 1/2. The answer provided by the book is g(X) = (x^2)-2, but shouldn't it be g(x) = (x^2)-4 ? Help will be much appreciated. Regards, Adam
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    Magnetism - the proportionality constant question

    Hi! Can anyone please tell me where this equation was derived from? This equation is used to get the magnetic field (B). I is current and r is the distance. And I think I understand the Meu. And yet I have no idea where the 2pi came from. I looked in my textbook, internet and asked friends...
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    Calculate Starting Salary with a 10% Annual Increase – Finite Series Question

    The answer provided is 25500 +_+ I guess it's just a bad question. Thank you shmoe!
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    Calculate Starting Salary with a 10% Annual Increase – Finite Series Question

    Q. If a person received a 10% salary increase each year and earned a total of $155680.05 by the beginning of the 5th year, determine the starting salary. Well, the wording is confusing me. It tells me to get the total by the BEGINNING of the 5th year, so is it asking for the money earned...
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    Centripedal acceleration question

    I got it now! Thank you!
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    Centripedal acceleration question

    Q. A BMX rider is about to ride over a large bump of radius R. What is the maximum speed the rider can travel without leaving the ground? Choice A. g/R B. gR C. (gR)^0.5 D. It depends on the mass of the rider The answer provided is C, but howcome g, gravity, is the centripedal...
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    Conditional probability marble question

    Q. A box contains three blue marbles, five red marbles, and four white marbles. If one marble is drawn at random, find: a) P(blue|not white) b) P(not red|not white) The answer for both a) and b) is 3/8. However right now I don't even understand the question. part a) wants possibility of...
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    Order of transforming a function

    Q. y= f(-x-4) Hi, I was wondering why I must factor out -1 to make the function y=(-1(x+4)). I tried to look in the texbook but it doesn't say why I have to do it that way.. Also when transforming a fuction, why should I do it from left to right? y=a(f(x-b))+d Isn't it more logical to...
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    Comparing Work: Lifting vs. Pushing a Box

    In which of the following would a person do the least amount of work? A. Lifting a 10 kg box a vertical height of 1.2 m. B. Lifting a 10 kg box a vertical height of 1.2 m using a ramp. C. Pushing a 10 kg box along a smooth floor a distance of 1.2 m. D. Dragging a 10 kg box along a rough...
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    Solve Secx=-5.2 | Find Solutions for x Between 0 and 2π

    Q. Solve: secx=-5.2 x is greater than or equal to zero and less than or equal to 2π I got 1.76 and 4.52, but answer key only has 1.76. Am I not right?
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    Solving a System of Equations Without a Calculator

    Thanks for the input, but that's how far I got by myself :( I should I get the intersecting points of the two graphs? Should I just use the calculator? Or is there another way around it?
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    Solving a System of Equations Without a Calculator

    Hi, this should be the last question for today :lol: Determine the number of solutions for the following system: y = -4log_{12} (x) y = 4 sin(x) Is there a way to do this without using a graphing calculator? Thank you very much!
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    Log (25/9) in Terms of a & b: Find Answer Here

    oops wrong forum! Please move this thread...Q.1 Express in terms of the stated variable. If a = log (2) and b = log (3), what is log (25/9) in terms of a and b ? My work log (25) - log (9) = 2[log (5) - log (3)] And I don't know where to go from here. I tried a few different approach but can't...
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