This Blog exists for the collective benefit of ALL Algebra students. While the posts are usually specific to Mr. Chamberlain's class, any and all "algebra-ticians" are welcome. The more specific your question (including your own attempts to answer it) the better.

I appreciate that you are using the blog and asking a question... however, I am enforcing my rule that you have to state the problem... not just the problem number. Please try again!!

We weren't supposed to solve problem 23 on page 91. We were supposed to do problem 23 on page 98. Did you type pg 91 by accident? Is your question 5(2+4z)?

On pg.91 #21 in section 2-2 the problem is (-5x-2=13) With having the negative in front of the five, I;m not sure if I should take that as a sign to add or if I should divide because it's 5x...

Mr.C during your video (2.3 solving multi-step equations) when we are checking our work for the problem instead of making all those fractions (15 = 2 (2/1 (13/4) -1) can we instead just use the distributive property to get (15 = -4t +2) and then add in the correct value of t?

There are two schools of thought... although the fist approach may be tougher, it represents a different path to evaluating the problem... in real life work scenarios, quality assurance professionals (yes, that's a job - pretty high paying in some fields!) try to test situations from different perspectives, so that more possible issues can be rooted out.

SO, all that said, as long as you check your work, that's good. If you want to choose a slightly easier path, go for it!

I already did the work on the sheets. I didn't really need them and would have been able to do the work without them though. Do I need to switch my work over or is it ok how I did it?

See pages 81-83 in the book... and watch the first four videos in MathChamber Academy Algebra Unit 2.

A POE is a PROPERTY OF EQUALITY (read with booming MATH GOD voice).

The Addition Property of Equality (ADD POE) states that: Adding the same number or value to each side of an equation produces an equivalent equation (DUH!). No need to memorize these words, you just have to know how they work. You learned this last year as "whatever you do to one side of an equation you have to do to the other." We're just getting a little more pompous and formal with our vocab. We are becoming snobby mathematicians now!

There are similar POEs for subtraction, multiplication and division... when using them as REASONS when solving an equation, you can abbreviate them as: SUB POE MULT POE DIV POE

(once again read with BOOMING math god voice) "The Identity Prop of Addition" states the sum of any real number and zero is the original number (DUH!).

The Identify Prop of Multiplication states that the PRODUCT of any real number and 1 is the original number (DUH!).

As you said in 4th grade... DUH!! What else would you expect??!!

It's just formal language wrapped around an obvious concept. See page 24 in the text book.

On problem 23 on page 91 we use the division property twice. Do we write it down twice of just once.

ReplyDeleteI appreciate that you are using the blog and asking a question... however, I am enforcing my rule that you have to state the problem... not just the problem number. Please try again!!

DeleteWe weren't supposed to solve problem 23 on page 91. We were supposed to do problem 23 on page 98. Did you type pg 91 by accident? Is your question 5(2+4z)?

ReplyDeleteOn pg.91 #21 in section 2-2 the problem is (-5x-2=13)

ReplyDeleteWith having the negative in front of the five, I;m not sure if I should take that as a sign to add or if I should divide because it's 5x...

Watch this video and lmk if it helps...

Deletehttp://www.screencast.com/t/vpknewPcqas

Mr.C during your video (2.3 solving multi-step equations) when we are checking our work for the problem instead of making all those fractions (15 = 2 (2/1 (13/4) -1) can we instead just use the distributive property to get (15 = -4t +2) and then add in the correct value of t?

ReplyDeleteA TRULY GREAT QUESTION!!! I MEAN THAT!!!!!!

DeleteThere are two schools of thought... although the fist approach may be tougher, it represents a different path to evaluating the problem... in real life work scenarios, quality assurance professionals (yes, that's a job - pretty high paying in some fields!) try to test situations from different perspectives, so that more possible issues can be rooted out.

SO, all that said, as long as you check your work, that's good. If you want to choose a slightly easier path, go for it!

Are we doing all of these problems on the Solving Algebraic Equations REASON bank sheets? And only one problem per side right?

ReplyDeleteNo need to use the sheets... they were just "training wheels" for you to provide the info as you work the equations...

DeleteI already did the work on the sheets. I didn't really need them and would have been able to do the work without them though. Do I need to switch my work over or is it ok how I did it?

DeleteDear Nobody,

DeleteOMG... just leave it as is... PLEASE!!

Professor Somebody

Do we do all of the problems in the homework the same way you showed how to do it with the properties in class?

ReplyDeleteABSOLUTELY!!!!! You are not getting FULL CREDIT for the homework unless I see PROPERTIES as reasons.

DeleteI'm sorry. I missed half of class on Tuesday the 28th. I still don't know what POE means. Can someone answer?

ReplyDeleteNever mind. I think it means Property of equality. Was I close?

DeleteYou can go on Math Chamber academy and watch the videos about POE.

DeleteSee pages 81-83 in the book... and watch the first four videos in MathChamber Academy Algebra Unit 2.

DeleteA POE is a PROPERTY OF EQUALITY (read with booming MATH GOD voice).

The Addition Property of Equality (ADD POE) states that: Adding the same number or value to each side of an equation produces an equivalent equation (DUH!). No need to memorize these words, you just have to know how they work. You learned this last year as "whatever you do to one side of an equation you have to do to the other." We're just getting a little more pompous and formal with our vocab. We are becoming snobby mathematicians now!

There are similar POEs for subtraction, multiplication and division... when using them as REASONS when solving an equation, you can abbreviate them as:

SUB POE

MULT POE

DIV POE

Gotsk it?

I'm confused on what each property means. I'm also confused on what a identity property is.

ReplyDelete(once again read with BOOMING math god voice) "The Identity Prop of Addition" states the sum of any real number and zero is the original number (DUH!).

DeleteThe Identify Prop of Multiplication states that the PRODUCT of any real number and 1 is the original number (DUH!).

As you said in 4th grade... DUH!! What else would you expect??!!

It's just formal language wrapped around an obvious concept. See page 24 in the text book.