Monday, May 29, 2006

Francis's growing post #3

1.What is the difference between an algebraic expression and an equation ?
A algebraic expression is made up of lots of signs and symbols from algebra and the symbols have Arabic numerals, literal numbers, the signs of operation. It also represents a quantity.A equation is a mathematical statement meaning it uses math. But in symbols those are two things that are the same. But equations state the equality of two expressions.

A example of a equation is (x + 1)2 = x2 + 2x + 1And a another example for a algebraic expression is 8+10=18I think the difference between a algebraic expression and an equation is that a equation doesnt have signs just symbols and a algebriac expression has both signs and symbols.

2. What is a variable and why do we use one in algebra?A variable is a letter that represents a number that were trying to firgure out so we dont know what that variable is yet.

3.) solve for N.first picture. 2+2+5=9
second picture. n=11 n+n=22

4.) Solve the following equations.
not done

5. For this question you need to create a T-Chart and a graph to plot your data from this question onto.

You are having a race against your friend, except you are on foot and he is on his bike. You both know that if you are in your bike you will be faster so your friend gives you a head start of 3 minute. If you can run 400m per minute, and your friend can bike 700m per minute, who will be the first to make it to the finish line 2000m away?

i win.

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At 7:42 PM, Blogger Mr. Reece said...

Two areas of concern, first I think you need to check your notes on what an expression is. Remember that an expression does not have a defined solution.

Second problem, who won the race?


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