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Mathematics 15 Online
OpenStudy (anonymous):

http://i.imgur.com/0yLT2k6.png

OpenStudy (e.mccormick):

What about doing so confuses you?

OpenStudy (anonymous):

the beginning part

OpenStudy (anonymous):

For this one, all you have to do is multiply the whole number by the denominator, and add that to the 7.

OpenStudy (anonymous):

So what is 6 x 8?

OpenStudy (anonymous):

48 right

OpenStudy (anonymous):

then add that to the 7

OpenStudy (anonymous):

55 so it's D?

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

Any other questions?

OpenStudy (anonymous):

yes three moe and that's it do I post em here

OpenStudy (anonymous):

Sure

OpenStudy (anonymous):

http://i.imgur.com/kTgheKd.png

OpenStudy (anonymous):

So this is just the opposite of what we did in the last problem. Instead of multiplying and adding, we divide and subtract.

OpenStudy (anonymous):

So How many times does 9 go into 37?

OpenStudy (anonymous):

5 times

OpenStudy (anonymous):

Okay, and what is 9 x 5?

OpenStudy (anonymous):

45

OpenStudy (anonymous):

then you did your math incorrectly :P

OpenStudy (anonymous):

It only goes into 37 4 times

OpenStudy (anonymous):

You are going to have a remainder

OpenStudy (anonymous):

So now what is 9 x 4?

OpenStudy (anonymous):

36

OpenStudy (anonymous):

There you go. Now, subtract 36 out of 37... How much are you left with?

OpenStudy (e.mccormick):

Here is a review of the first one for you: \(6\dfrac{7}{8} \implies\) \(6 + \dfrac{7}{8}\) Rule of common denominator: to add fractions they must have a common denominator. \[6 + \dfrac{7}{8} \implies\\[4 pt] \dfrac{6}{1} + \dfrac{7}{8} \implies\\[4 pt] \dfrac{6}{1}\times \dfrac{8}{8} + \dfrac{7}{8} \implies\\[4 pt] \dfrac{48}{8} + \dfrac{8}{8} \implies\\[4 pt] \dfrac{48 +7}{8} \implies\\[4 pt] \dfrac{55}{8}\] That is with the technical stuff on how it works.

OpenStudy (anonymous):

oh and as for futerness i am left with 1

OpenStudy (anonymous):

Mkay. So we had 9 go into 37 4 times, and had 1 left over. So what do you think the answer is?

OpenStudy (anonymous):

C

OpenStudy (anonymous):

Not quite. We brought 4x9 out, and are left with 1. You still use the original denominator. Try agian

OpenStudy (anonymous):

D

OpenStudy (anonymous):

Why do you think it's D?

OpenStudy (anonymous):

my intuition

OpenStudy (anonymous):

:P If you're confused on any particular part, just let me know. I want you to understand it so you do well in the future.

OpenStudy (anonymous):

so it is D?

OpenStudy (anonymous):

The answer is B. We took 4 of the 9's out, and are left with 1/9.

OpenStudy (anonymous):

omg I feel silly

OpenStudy (anonymous):

Haha. No worries

OpenStudy (anonymous):

sorry i have cognitive disordar

OpenStudy (anonymous):

Don't apologize. I'm here to help you :)

OpenStudy (anonymous):

You have 2 more?

OpenStudy (anonymous):

http://i.imgur.com/Ud8BUZd.png - yes this one more easy than last ones, it is C right?

OpenStudy (anonymous):

Yes. Neither A or B are correct, and D is not true.

OpenStudy (anonymous):

http://i.imgur.com/H68i6YU.png - this one kinda hard

OpenStudy (anonymous):

This one is like the first one we did.

OpenStudy (anonymous):

Do you remember the first step?

OpenStudy (anonymous):

hmm cross multiply?

OpenStudy (anonymous):

Sorta. That deals with a bit different kind of problem though.

OpenStudy (anonymous):

I'm sorry, the 6 and the 7

OpenStudy (anonymous):

Remember? We multiply the 6 and the 7?

OpenStudy (anonymous):

You there Adrian?

OpenStudy (anonymous):

yes its cuz my cat wanted belyl rub

OpenStudy (anonymous):

42

OpenStudy (anonymous):

Okay, and what is 42 + 4?

OpenStudy (anonymous):

46

OpenStudy (anonymous):

So what answer makes sense?

OpenStudy (anonymous):

D

OpenStudy (anonymous):

There you go!

OpenStudy (anonymous):

Any other questions?

OpenStudy (anonymous):

hmm yes five more

OpenStudy (anonymous):

but I'll just do them tomorrow im sleepy good night

OpenStudy (anonymous):

Good night!

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