Algebra word problems

bobbym · 2011-04-25 14:00:24

That is a bad problem. There are many ways to write it. They are all equal but your site may not recognize them as such.

survival · 2011-04-25 15:15:47

It took it!!!!!! Thank you so much!
Making headway on these problems. You are exact on every one of them.
Factor the trinomial.
12s^2 + 11sd - 15d^2

bobbym · 2011-04-25 15:29:58

Hi;

Another funky one, same reason.

Taking a break to cook and eat, see you soon.

survival · 2011-04-25 15:35:50

Thank you. I will be here.
Factor the difference of squares.
a^4 -1

bobbym · 2011-04-25 17:23:06

Hi;

survival · 2011-04-25 17:39:00

Thank you, it is exact. I am off tomorrow, but that is not off for me. I have so many projects and homework due this week.
Multiply.
(6x + 1) (9x^2 + 4x + 2)
Simplify.

bobbym · 2011-04-25 17:51:06

Hi;

survival · 2011-04-25 18:04:12

Hi, it's me again.

Factor out the greatest common factor.

4x^4 - 28x^3 + 8x^2
The factorization is____

Last edited by survival (2011-04-25 18:06:12)

bobbym · 2011-04-25 18:12:41

The greatest common factor is 4x^2. I think the question is asking for the factorization which is above.

survival · 2011-04-25 18:25:34

Thank you again.
Factor the greatest common factor from the polynomial.
4x^7 y^5 + 32x^5y^4 + 36xy____
Type your answer in factored form.

Last edited by survival (2011-04-25 18:26:45)

bobbym · 2011-04-25 18:34:39

survival · 2011-04-25 18:44:43

Thank you. These are really complicated.
Factor by grouping.
-20r^2 + 12rs + 15rs - 9s^2 = _____

bobbym · 2011-04-25 19:10:26

Hi;

Did you copy the problem correctly, check the two terms in the middle.

survival · 2011-04-25 19:14:06

I think so. The two terms in the middle are 12rs + 15rs. (terms in the middle)
-20r^2 + 12rs + 15rs - 9s^2

I can hear a train whistle blowing in the distance. Sounds eerie.

Last edited by survival (2011-04-25 19:16:09)

bobbym · 2011-04-25 19:19:06

survival · 2011-04-25 19:30:25

Thank you!
Here's a word problem.
Write the numbers mentioned in scientific notation.

The average cost of construction for medium-sized office buildings is $10.6 million, while that for single homes is $130,000.

$10.6 million = S___

(use scientific notation. Use the multiplication symbol in the math palette as needed.)

Edited to add: It says it has a second part, not seen yet until the first part is solved.

Last edited by survival (2011-04-25 19:34:20)

bobbym · 2011-04-25 19:34:10

1.06 x 10^7

Still here that train?

survival · 2011-04-25 19:35:32

No, the train is gone. I always loved trains when i was a kid. I grew up and they sound eerie at night. There is one not far that goes through every night in the distance.

Edited to add the second part of that problem.

It lists $130,000= $_____
Use scientific notation same as the first part.

Last edited by survival (2011-04-25 19:42:22)

bobbym · 2011-04-25 19:37:41

You are lucky it is far away. They are noisy.

survival · 2011-04-25 19:43:48

Yes, trains are noisy. My daddy told me and my brothers that he hopped a train a few times when he was young.

bobbym · 2011-04-25 19:45:54

that he hopped a train a few times when he was young.

Well, I ain't heard that expression for a long, long time.

survival · 2011-04-25 19:48:52

I was little and I remember everything about my family, for it was a happy time growing up. It was also nice having grandparents. I miss that.
Oh, I edited the other one to show that second part where it listed:
$130,000 = $___ (the notation one)

Last edited by survival (2011-04-25 19:50:31)

bobbym · 2011-04-25 19:54:23

1.3 x 10^5

survival · 2011-04-25 20:02:18

Another word problem.
The mass of Saturn is 5,688 x 10^26 kg and the mass of Mercury is 3.302 x 10^23 kg.
How many times larger in mass is Saturn than Mercury?
The mass of Saturn is____times larger than the mass of Mercury.
(Use scientific notation. Round to the nearest thousandth.)

I think there is only one more notation. I never cared much for them. LOL

bobbym · 2011-04-25 20:05:28

Here is the answer as far as I know.

1.722592 x 10^3

Math Is Fun Forum

#51 2011-04-25 14:00:24

Re: Algebra word problems

#52 2011-04-25 15:15:47

Re: Algebra word problems

#53 2011-04-25 15:29:58

Re: Algebra word problems

#54 2011-04-25 15:35:50

Re: Algebra word problems

#55 2011-04-25 17:23:06

Re: Algebra word problems

#56 2011-04-25 17:39:00

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#57 2011-04-25 17:51:06

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#58 2011-04-25 18:04:12

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#59 2011-04-25 18:12:41

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#60 2011-04-25 18:25:34

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#61 2011-04-25 18:34:39

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#62 2011-04-25 18:44:43

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#63 2011-04-25 19:10:26

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#64 2011-04-25 19:14:06

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#65 2011-04-25 19:19:06

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#66 2011-04-25 19:30:25

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#67 2011-04-25 19:34:10

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#68 2011-04-25 19:35:32

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#69 2011-04-25 19:37:41

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#70 2011-04-25 19:43:48

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#71 2011-04-25 19:45:54

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#72 2011-04-25 19:48:52

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#73 2011-04-25 19:54:23

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#74 2011-04-25 20:02:18

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#75 2011-04-25 20:05:28

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