Math Gr12 Advanced Functions

I am stuck on this one part of this question:
The function S(d)=93(logd)+65 relates the speed of the wind S, in miles per hours, near the centre of a tornado to the distance that the tornado travels,d,in miles. If a tornado has sustained winds of about 250 mph, estimate the distance it can travel.
I do this :
250= 93logd +65
185/93= logd
logd= 0.989247312
I don't know what to do after that because I cannot divide anything by log. Or is there some other way I should be doing this?

  1. 👍 0
  2. 👎 0
  3. 👁 274
  1. You have to take the inverse of log, that is ...

    what number d you you need, so that log d = .989...
    BTW, I got log d = 1.9892....
    hope yours was just a typo.


    On most calculators, use the 2ndF key

    on mine, I would press the following:

    2ndF
    log
    1.98924..
    =

    to get 97.5545

    Without having to re-enter the 1.98...

    Here is the sequence of my keystrokes

    250
    -
    65
    =
    รท
    93
    =
    2ndF
    log
    =

    to get the 97.5545

    1. 👍 0
    2. 👎 0
    posted by Reiny

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    An automobile tire has a radius of 0.380 m, and its center moves forward with a linear speed of v = 19.0 m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the

    asked by La' TGasha on April 3, 2008
  2. Chemistry

    Please help me with this chemistry question? I am working on a lab report and I am stuck on this question: Use the concept of stoichiometry to explain why balanaced equations are necessary when performing calculations in

    asked by Jessie on September 8, 2009
  3. Quantum Physics

    Has anyone done Block 7-8 for TMA 6 for s103 - discovering Science, as i am struggling big time, any help would be much appreciated yes i am like you really phased by this how much of the tma have you managed to do Me, too what r

    asked by Adam on February 27, 2007
  4. math help1

    Okay I am a little bit confused about one math question can you please Help me out? There is two parts but I already finished part a just stuck on part b Okay so part a. draw the reflection of f(x) = (square root X-2) in the Line

    asked by kris! on September 12, 2006
  5. Derivatives

    Find f'(x): (abs(((x^2)*((3x+2) ^(1/3)))/((2x-3)^3)) So I thought I should split it into two parts: A and B. A) (x^2)/((2x-3)^2) B) ((3x+2)^(1/3))/(2x-3) My plan was to differentiate each part and then multiply them together,

    asked by Erika on May 24, 2013
  6. math - ans.check

    Given function G(x)=-7/8(45-x), find x to nearest tenth, when G(x)=15 ____________________________________ I'm stuck on this question,i tries on my own but i couldn't get it right, plz help! 15=-7/8(45-x) -8/7(15)=45-x

    asked by troy on February 17, 2015
  7. Math

    I can't figure out this question. I tried asking my classmates and teacher, but no help. Except one girl but I didn't understand. Can you help me? Question; A person who weighs 130 pounds can burn about 300 calories per hour

    asked by Cassie on June 10, 2014
  8. Math

    Hi. The question I'm having problems with: Write the body of an iterative function to compute n!, where n! = n(n-1)(n-2)...1. Then, analyze this function where the work unit is the multiplication operation. I think I have the

    asked by Iah on May 3, 2007
  9. Psychology

    I am writing a paper and am stuck on one part can some give me an idea what i am needing. paper in which you analyze the function of emotions as motive. Be sure to address the following items on your analysis: This is the part I

    asked by TOM on October 17, 2008
  10. Math

    I am doing a warm up and got stuck on a function question x : 2 3 4 f(x): 2 1 0 Can someone help me figure out the function rule?

    asked by SeraaDiamond56879 on December 15, 2018

More Similar Questions