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Type: Posts; User: Dr_Calculus

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  1. Question: Bearings

    by Dr_Calculus
    Answers
    3
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    2,243

    What crocivic said is absolutely right. You just...

    What crocivic said is absolutely right. You just hafta draw the triangle and plug in the data that you have. The actual name is the "Law of Cosines" but whatever. Remember, however, that a, b, and c...
  2. Answers
    4
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    5,165

    uh...

    Now I have another question for you: what are the purposes of the b and the x? Are you supposed to solve for them? If you are, then they don't come out to be whole numbers.
  3. Question: Chemistry

    by Dr_Calculus
    Answers
    1
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    3,375

    ??

    CaCO4... this appears to be a type of mineral, but are you sure it isn't CaCO3? CaCO4 appears to be a mineral called aragonite, similar to calcite, which is CaCO3. Aragonite can be used in...
  4. Answers
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    820

    Good one

    Hey, that's a good answer hank, you sure know how to stimulate that prefrontal cortex :)

    Dr. Calc
  5. Answers
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    4,286

    mmmmmmm

    an undefined slope is a vertical line, so this means that every point on the line has the same x-coordinate (horizontal coordinate)

    Dr. Calc
  6. Answers
    4
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    5,165

    Huh?

    I'm not sure what you want me to do with these numbers. 10000 and 625? What are those?
  7. Answers
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    2,511

    Yep

    Sound can technically travel through ANY kind of medium (rock, glass, air, water, etc.). But it must have a medium because sound is a LONGITUDINAL wave, which means that particles vibrate side to...
  8. Question: Parasitism

    by Dr_Calculus
    Answers
    7
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    20,050

    Yay!

    It makes me happy that I answered correctly. Maybe I'll be able to pass my AP biology exam after all !
  9. Answers
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    2,567

    let's see...

    Well, [cot(x)+csc(x)]^2=cot(x)^2 + 2cot(x)csc(x) +csc(x)^2
    now, let's sub in sin and cos in place of cot and csc.

    cos^2/sin^2 +2(cos/sin)(1/sin)+1/sin^2

    now, we add it up because denominators...
  10. Question: Math help

    by Dr_Calculus
    Answers
    4
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    2,070

    please explain...

    Uh, could you explain what u mean by r=4, r=3, p=64? I'm somewhat confused at what you are trying to say.
  11. Question: Math help

    by Dr_Calculus
    Answers
    4
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    2,070

    I got number 2

    This basically says that:
    (2x-3)/3=(1-x)/5
    10x-15=3-3x
    13x=18
    x=18/13
  12. Question: Parasitism

    by Dr_Calculus
    Answers
    7
    Views
    20,050

    I think termites actually is an example of...

    I think termites actually is an example of parasitism in a deciduous forest, but I could be wrong. Biology is not my favorite science class :)
  13. Answers
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    1,508

    Lol

    Yeah, that's true... I don't even know how to integrate by partial fractions yet... I'm still in calc AB. I do know how to integrate by parts though, I got bored in class. Nonetheless. I'm just too...
  14. Answers
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    1,143

    I'm not sure I understand what the situation is....

    I'm not sure I understand what the situation is. The wind is blowing at the top of the hinge only? I don't think that would do anything to the door...
  15. Answers
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    2,497

    to the rescue!

    Ok, here is your misunderstanding. On mass 1, there are two "forces" acting. The tension in the rope and the weight of the mass. We don't know the tension of the rope, so we called it T1. But we DO...
  16. Question: Sinc(x) Pain

    by Dr_Calculus
    Answers
    4
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    1,835

    to explain...

    I agree; I don't think that there's enough information to solve the problem unless there is some identity that I am unaware of... As for my criticism, I was just noting that we don't know whether y...
  17. Answers
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    yup

    I think reinsuranc has the best method to do the problem... I guess if you want to state the solution more algebraically, we could say:

    1/4 x +1/6 x = 1

    where x is the number of hours needed...
  18. Question: Pre-Cal

    by Dr_Calculus
    Answers
    1
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    4,001

    I'm your man

    Well, I guess you can say you're lucky that I roam the boards these days... I don't want to do all the work, so I'll just give you a start. First, you want to use radians, and not degrees, to find...
  19. Answers
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    It is solved! Eureka!

    Phorze, I didn't see something very significant before. Notice that the square has a rt. Triangle OUTSIDE the 81m square, and a rt. Triangle INSIDE the square. Upon closer inspection, I found the two...
  20. Question: Methodology

    by Dr_Calculus
    Answers
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    1,742

    Being from a foreign country...

    It is often much easier for the students if you use lots of hand motions and more concrete gestures. Remember that different languages say the same thing differently, so I think your goal is mainly...
  21. Answers
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    5,390

    easier way

    An easier way to solve this problem is to use a bit of intuition. A square is a rectangle with the greatest amount of area for fixed amounts of material (for example if you had x amount of fence and...
  22. Answers
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    3,921

    Well...

    If we assume a uniform distribution of the data, then 411/100,000 *100 is the percentage of inmates at the end of 1995 and 476/100,000 *100 is the percentage of inmates at the end of 2002. This...
  23. Answers
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    1,919

    nice job

    Good job phorze, I missed the fact that the corner was in the center. If you draw the diagonal of your 81ft square, then we will have the lengths of both the line connecting the two rt. Angles and...
  24. Answers
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    4,909

    Yeah, on top of that, it's a really vague...

    Yeah, on top of that, it's a really vague problem... how do we determine efficiency?
  25. Answers
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    3,381

    I agree with slater in this regard. However, I...

    I agree with slater in this regard. However, I feel one other important thing is to get your children to realize that their education is important. Once they get their priorities straight, they will...
  26. Answers
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    2,095

    To disagree

    First off, I think it is always worth going through the education. Way back in the 1600s, scholars were treated with the utmost respect (despite ridicules of their theorems). If you try to start your...
  27. Answers
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    2,298

    No way!

    I can't say that I've been in your position because I'm still a high school student. However, I know that you should never, ever admit defeat. I take calculus, and EVERY time I hit a bump, there is...
  28. Answers
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    8,954

    But...

    Yes, it is a simple pythag problem. Let's give this problem a bit of a twist though. Let us assume that the tip of the ladder is slipping down the wall at a rate of 1 foot per second. How fast is the...
  29. Answers
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    1,919

    The key to this problem is finding the area of...

    The key to this problem is finding the area of overlap. This can be done by connecting the two vertices that are right angles. This will create two triangles. If you can find the values for each...
  30. Answers
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    1,312

    What do you mean by "flooring"?

    What do you mean by "flooring"?
  31. Question: Sinc(x) Pain

    by Dr_Calculus
    Answers
    4
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    1,835

    Maybe not

    You can't choose just any value for x and y since we have no knowledge of x and y being parts of a function, in which a specific x value would correspond to a specific y value.
  32. Answers
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    4,973

    Method

    Well, I haven't done Alg. 2 in a while, but I can give you the correct method for doing math problems in general. The following steps work for almost any problem, from algebra 1 to calculus
    1) state...
  33. Answers
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    2,231

    Problem fixed

    Well, my problem finally got fixed, although I'm going off to college in a few months, so I'll be leaving future problems to siblings to quarrel over, but I know about dts11's problem. Usually, the...
  34. Answers
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    Trying things still

    Well, I've tried booting in safemode and all that good stuff. I'm running ME, and I know I should probably upgrade my system, but I don't understand why something would lock my hard drive... It...
  35. Answers
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    2,231

    Can't use Scandisk! Help!

    I'm having trouble with my hard drive. It works fine, except for one problem. I want to defrag my hard drive but it refuses to do it. I tried scandisk and it doesn't like that either. The error...
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