







541.39(1 + i)^15 = 784.09 
20091014 

Fitore pose la question : Hi, I noticed that this question was already posted up, however I was hoping I could solve it without having to use logs. Can you please help me? The equation is:
541.39(1 + i)^15 = 784.09 Penny Nom lui répond. 





4x+8y=32 
20071018 

Sara pose la question : Rewrite the following equation:
4x+8y=32
in function form ("solve for y"). Penny Nom lui répond. 





Solve for x and y 
20070327 

anthony pose la question : solve y=4x and x+y=5 Sara Ulmer lui répond. 





Diamonds and Pearls 
20031211 

Lauren pose la question : A crown holds a total of 3080 jewels.
It is made up of diamonds and pearls.
There are 10 times as many diamonds as there are pearls.
How many pearls are there? Penny Nom lui répond. 





x+3 = 15x 
20030719 

Nathan pose la question : Without the use of trial and error, is there a way of solving for x where x + 3 = 15x? I know that x = 0.1875, but how do I find whether x + 3 is positive or not if I did not have this information (In other words, how would I solve whether the xvalue was 3 or less, or if it was more than 3)? Claude Tardif and Penny Nom lui répond. 





(n+17)(n+7) = 0 
20030305 

Janea pose la question :
What is the answer to 1. (n+17)(n+7)=0 What is the answer to:2. (y15)(y100)=0 Penny Nom lui répond. 





The substitution method 
20010305 

A student pose la question : Solve each system of equations by the substitution method. Show your work.  y = 8
7x = 1  y
 y = x  1
4x  y = 19 Penny Nom lui répond. 





Solving Equations 
20010223 

Stephanie pose la question : Do you know who came up with solving equations? Do you have any websites that can give me good information on solving equations? Do you know any history on solving equations? Do you know what solving equations is used for? And finally............Sorry about all of the questions :) Has the form of solving equations changed from the time it came out to now? Juci McDonald lui répond. 





Solve for v 
19991209 

Beth pose la question : 13/4(v+2)=5 Penny Nom lui répond. 





Multiple step problems 
19991109 

Maria Rainsdon pose la question : I don't understand how to solve these multiple step problems. I wasn't there when my teacher explained it and I am really lost. Here is one of the probs I don't understand: 3m+6=m6. Penny Nom lui répond. 





Equations with fractions 
19991010 

Lori pose la question : I'm a secondary student. How would you figure out a problem such as t2/t =14/3t  1/3. The book gave one example but it is really easy. The work YOU have to do is totally different. You don't have to tell me the answer just how to do such problems like these. Penny Nom lui répond. 





Intersecting Lines. 
19980210 

Erik Heppler pose la question : My typewriter frequently makes mistakes. Suppose I gave you the following system of equations to solve: 35.26X + 14.95Y = 28.35 187.3X + 79.43Y = 83.29 When I looked back, I realized that I meant to use 14.96 as the "Y" coefficient in the first equation instead of 14.95. Solving the system using 14.95 and then solving another system using 14.96 with all other values the same both times results in the intersection points (1776, 4186) and (770, 1816) respectively. How can that be? Penny nom lui répond. 

