Homeschooling moms and dads, students, and anyone baffled by mathematics (not ME, of course *cough*), I found the most amazing site!!! Mathway. This is totally, totally cool. You type in your math problem, and let the computer solve it. The results even give an explanation of how the problem is solved! This is soooo cool! We are definitely going to be using this, frequently, here.
I typed in this problem:
(2-6)(3x) < y
I asked the computer to solve the inequality for “y.” This is what it spit out:
Since y is on the right-hand side of the equation, switch the sides so it is on the left-hand side of the equation.
y>(2+6)(3x)
Add 6 to 2 to get 8.
y>(8)(3x)
Multiply 8 by 3x to get 24x.
y>(24x)
Remove the parentheses around the expression 24x.
y>24x
Wow. I will say that I am indignant and very offended that I had to go through TWELVE years of school without this website. :-p I sure could have used it.
Anyway, the site is free to use. It wil graph your answers and explain them further if need be. Totally cool!
6. December 2008 at 6:38 pm
I was swinging through the trees and strumming a happy tune when I came across this post today (Mathematics is usually what I’m thinking about when I’m out for a nice, leisurely swing ;-) ). But my proofreader’s eye caught the fact that before plugging your inequality into the website, it had a (2 - 6) in it that got changed to a (2 + 6) after the site suggested switching sides.
Is this a typo or is there something else going on?
BTW, nice blog :-)
8. December 2008 at 3:38 pm
2386dividedby 29 days,what would the cost per day be.