driving

  1. X

    Driving a car

    Hey people! I got a problem here I'm stuck on: A car is driving at night along a level, curved road. It starts in the origin, the equation of the road is y = x2, and the car's x-coordinate is an increasing function of time. There is a signpost located at (2,3.75). a) What is the position of the...
  2. G

    Statistics is driving me crazy

    Hi, i'm currently in pursuit of my bachelors degree in business/health and I have been struggling with math, statistic mostly.(Crying)(Lipssealed)
  3. Paze

    Trig identity and ln derivatives driving me nuts!

    I'm working my way through all the Khan Academy topics in the practice section and I've come as far as 'special derivatives' and 'chain rule'. The special derivatives consist of identifying the derivatives of sin, cos, tan, ln and e. I have memorized the derivative of these functions but I do...
  4. A

    silly loan question - driving me nuts!

    Colin buys a new car worth $25,000. He pays a 10% deposit (i.e $2500) and agrees to pay $500 at the end of each month for as long as necessary. If interest is at 14% pa effective, find: 1. the number of payments of $500 requires 2. the amount of the final smaller payment required one month...
  5. E

    Derivatives and application Pythagorean: Christy is driving...

    Question: Christy is driving her new charger while Alex is interning with the centralia police department. When he sees her, he is travelling towards on a road perpendicular to the road she is on. His speed is a constant 30MPH. He uses his radar gun to see her speed just as she goes out of site...
  6. I

    Statistics question driving me gaga!

    Red Street Garage has 9 used cars for sale. Fairwheel Garage has 15 used cars for sale. The mean age of the cars in Red Street Garage is 3.6 years and the standard deviation is 1.925 years. In Fairwheel Garage, Σx = 64 and Σx^2 = 352, where x is the age of a car in years. (i) Find the mean age...
  7. I

    Statistics question driving me gaga!

    Red Street Garage has 9 used cars for sale. Fairwheel Garage has 15 used cars for sale. The mean age of the cars in Red Street Garage is 3.6 years and the standard deviation is 1.925 years. In Fairwheel Garage, Σx = 64 and Σx^2 = 352, where x is the age of a car in years. (i) Find the mean...
  8. S

    optimization problem driving me crazy!

    The owner of a used tire store wants to construct a fence to enclose a rectangular outdoor storage area by using part of one side of the store, which is 110 feet long, as one of the sides of the enclosed area. There are 210 feet of fencing available for the other three sides of the enclosure...
  9. L

    Volum of a cylinder in a cone (driving me insane!)

    a cylinder of radius r and height h is inscribed within a cone with bas radius 6 and height 20 1) show that the volume of the cylinder is given by V= 10.(pi).r^2.(6-r) -- 3 2) find r and h 3) what is the maximum volume
  10. M

    Summer Math Problem driving me crazy

    This is a pre-calculus review to help me get ready for ap calc. I could not simplify the expression so I entered it into wolfram mathematica. I don't understand its second step though. If you could explain wolfram's steps or explain an easier method that would be great. Here is the expression...
  11. I

    Simple complex equality driving me nuts

    Find all solutions to sinz = 2i. I've gone down the road of sin (z-z^(-1))/2i and its polar counterpart, and also laurent series, but the solutions I get are very complicated. This is a problem from a competency exam so I'm guessing it should have a clever but simple path and answer. Any...
  12. H

    Driving distance

    Kaya drove 200 miles in 5 hours of actual driving time. By driving an average of 10 miles per hour faster, Kaya could have saved how many hours of actual driving time? Hmm..?
  13. P

    Please help this problem is driving me crazy

    Your planet has a circumference of 44032 miles at the .918 latitude North. If it takes 2.5 earth days (24 hour days) for your planet to complete one rotation then determine the following: I got the radius its 7007.910 miles. Now its asking for the circumference of the equator. How do I find the...
  14. B

    Out of 20 probelms two are driving me crazy.

    This homework, and it's not graded by problem, its graded on completed the assignment and turning it in. I know you guys are thinking, "well you got it easy. But, it comes back to hunt you, trust me. Because the teach does not grade each question and just the assignment your kind of stuck...
  15. M

    Problem is driving me NUTS

    Ok i have looked at this problem for at least two hours and cannot come to a conclusion. Can someone please give me a hint or at least tell me my intuition is somewhat sensical. If two integers between 1 and 100 inclusive are chosen at random, what is the probability that the difference of the...
  16. T

    Driving Rate Problem

    (a) A highway patrolman traveling at the speed limit is passed by a car going 20 mph faster than he is. After one minute, the patrolman speeds up to 115 mph. How long after speeding up until the patrolman catches up with the speeding car. The speed limit is 55 mph. (b) Same question, but this...
  17. JoeyCC

    These Determinants are driving me crazy! (Matrices)

    Hey guys, Firstly, Happy Thanks Giving for all of you who are Canadian! I've got a few problems with determinants which I can't solve! I'm hoping any of you can help me: I know the answer to the last problem of the first question is -23. Can anyone show me the rest? I thank you in advanced!
  18. T

    Number sequence driving me crazy!

    Hello, I have a sequence of 99 numbers, which I cant determine the pattern for. Are you able to work it out? The numbers are actually the experience points required for a certain level in a computer game. I have been given the numbers to reach level 99 but I need to work out the XP required for...
  19. S

    Probability help (this is driving me nuts) #3

    I have been at this for 3 days already and i did some of them but i just am so confused that my brain hurts even trying to figure out if i am doing the right stuff. please please help me/ show me or point me in the right direction with these problems 1.English and American spellings are...
  20. S

    Probability help (this is driving me nuts) #2

    I have been at this for 3 days already and i did some of them but i just am so confused that my brain hurts even trying to figure out if i am doing the right stuff. please please help me/ show me or point me in the right direction with these problems 2. A box contains n = g + b + m...