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A Percent Larger?  TOPIC_SOLVED

Hi all! New guy here just so you know. I'm stuck and I need help. I'm working a percent larger problem. I have an original cell. I have to find how much larger the consecutive cells are. The percentage is 6.3. Every succeeding cell is 6.3% larger than the previous. When I solve for the second cell I...
by diaste
on Sat Jan 17, 2009 2:31 pm
 
Forum: Beginning Algebra
Topic: A Percent Larger?
Replies: 2
Views: 3164

Re: A Percent Larger?  TOPIC_SOLVED

Thanks for the reply. I see the solution now. It was messing me up they arrived at 1.06 because I couldn't make the solutions equate.

Thanks again!
by diaste
on Sat Jan 17, 2009 10:31 pm
 
Forum: Beginning Algebra
Topic: A Percent Larger?
Replies: 2
Views: 3164

Transformation trouble: 3x + 3/2(2x - 1) = 2  TOPIC_SOLVED

I keep coming up with the same solution for this problem which differs from the book. 3x + 3/2(2x - 1)= 2 I continue to get 7/15 and the book says it's 7/12. I know this may appear simple but it has me stumped. First I multiplied by the reciprocal, then I tried distributing. I keep coming up with th...
by diaste
on Sat Jan 17, 2009 10:39 pm
 
Forum: Beginning Algebra
Topic: Transformation trouble: 3x + 3/2(2x - 1) = 2
Replies: 2
Views: 2663

Simplify: I get y = (10-2x)/5 but book says y = (1/5)(10-2x)  TOPIC_SOLVED

I was wondering what is the correct answer or the simplest form of 2x + 5y=10? I was asked to solve for y I answered this: y=\frac{10-2x}{5} The book says \frac {1}{5}(10-2x) is correct. Which is the same though it looks simpler to me. Wouldn't y = 2-.4x be even simpler? I hope it displays c...
by diaste
on Fri Jan 23, 2009 10:28 pm
 
Forum: Arithmetic
Topic: Simplify: I get y = (10-2x)/5 but book says y = (1/5)(10-2x)
Replies: 4
Views: 4548

Re: Transformation trouble: 3x + 3/2(2x - 1) = 2  TOPIC_SOLVED

Elizabeth,
Thanks for the reply and apologies for not getting back sooner.
I figured out what I did wrong in the above equation. I didn't distribute properly. The answer is .58 or 7 divided by 12.
Thanks again!
by diaste
on Fri Jan 23, 2009 10:37 pm
 
Forum: Beginning Algebra
Topic: Transformation trouble: 3x + 3/2(2x - 1) = 2
Replies: 2
Views: 2663

Re: Simplify  TOPIC_SOLVED

"Ah, now I see!" said the blind man. :wink: y=\frac15(10-2x) is what the book says is correct. I say this is as correct y=\frac{10-2x}{5} but isn't this: y=2-.4x, simpler yet? I like the decimal form of the answer much better as I'm very used to converting fractions to decimals in ...
by diaste
on Fri Jan 23, 2009 10:58 pm
 
Forum: Arithmetic
Topic: Simplify: I get y = (10-2x)/5 but book says y = (1/5)(10-2x)
Replies: 4
Views: 4548

Re: Simplify: I get y = (10-2x)/5 but book says y = (1/5)(10-2x)  TOPIC_SOLVED

Hey Little Dragon, I know, isn't that annoying? In Linear equations they want the answer to look like y=\frac15(10-2x) but now that we're graphing, the very next chapter, they want the answer to look like y = 2-.4x . And they didn't say they wanted it in the simpler form. I'm still counting ...
by diaste
on Sat Jan 24, 2009 1:15 pm
 
Forum: Arithmetic
Topic: Simplify: I get y = (10-2x)/5 but book says y = (1/5)(10-2x)
Replies: 4
Views: 4548

-1^2: is this equal to -1 or to 1?  TOPIC_SOLVED

Ok, I did a little reading on this and thought I had the concept down but apparently I'm missing something. The big question is does -1^2 equal -1 or 1? It's -1 from the explanation I read which makes perfect sense to me, if -1^2 = (-1^2) = -(1)(1) then -1^2 = -1 . If, (-...
by diaste
on Sat Jan 24, 2009 2:03 pm
 
Forum: Pre-Algebra
Topic: -1^2: is this equal to -1 or to 1?
Replies: 8
Views: 5233

Re: -1^2  TOPIC_SOLVED

Thanks for your reply.
I think I see it now. The substitution is -1 not . obviously the square is then and not .

There are two solutions when taking the square root of a positive number? Really? What's the other solution?

Thanks again!

Daniel
by diaste
on Sat Jan 24, 2009 3:55 pm
 
Forum: Pre-Algebra
Topic: -1^2: is this equal to -1 or to 1?
Replies: 8
Views: 5233

Graphing |7 - 3x| - 10 = 4  TOPIC_SOLVED

I have a question on negative numbers in absolute value equations. For instance: |7-3x|-10=4 |-3x+7|-10=4 -3x+7=14 -3x = 7 x = - \frac 73 This is fine for me. I'm assuming that the result is a negative based on the division by -3. The book says that's correct. The other solution is what's giving me ...
by diaste
on Sun Jan 25, 2009 10:18 pm
 
Forum: Beginning Algebra
Topic: Graphing |7 - 3x| - 10 = 4
Replies: 4
Views: 3528
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