Math For Social Sciences. Practice Exam


  1. Use the elimination method to solve each of the following systems:
  2. Let tex2html_wrap_inline112 , tex2html_wrap_inline114 , tex2html_wrap_inline116 and tex2html_wrap_inline118 .
  3. Use the Gauss Jordan method to solve the following system:

    displaymath95

  4. Use the method of matrix inverses to solve the following system:

    displaymath96

  5. A 45-year-old man puts $1,000 in a retirement account at the beginning of each quarter until he reaches the age of 60 and makes no further deposits. If the account pays 11% interest compounded quarterly, how much will be in the account when the man reaches age 60?
  6. A speculator agrees to pay $15,999 for a parcel of land; this amount, with interest, will be paid over 4 yr, with semiannual payments, at an interest rate of 10% compounded semiannually. Find the amount of each payment.

Formulas


If you would like to check your answers, click on Answer.

If you would like to practice on the comprehensive final, click on Final.

If you would like to go back to the original menu, click on Menu.


Tue Aug 12 21:45:49 MDT 1997

Copyright © 1999-2024 MathMedics, LLC. All rights reserved.
Contact us
Math Medics, LLC. - P.O. Box 12395 - El Paso TX 79913 - USA
users online during the last hour