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hram777 [196]
3 years ago
15

I need help with questions 20 through 25 please. (Attachment is below)

Mathematics
1 answer:
mezya [45]3 years ago
5 0
I only got 22-25 done cause its been a long time since ive done these so i don't remember how to do the first two ):

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Which expression is the factored form of −1.5w+7.5 ?
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c.

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the most that can be factored out is -1.5,

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3 years ago
How do You supposed to do this i need many method to do it.
defon
I like the substitution method. Which is when you make one equation equal only x or y and plug it into the other equation)

There is also the graphing method. If you graphed it, it might not be quite as accurate (at least on hand, on computer you would be pretty exact)

Then there is the elimination method. You multiply one of the equations by a coefficient so that you can eliminate x or y from the equation. 
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