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Setler79 [48]
3 years ago
11

Dimitrius returned 5 library books last week, returned 3 books this week, then checked out 8 more books. He now has 12 library b

ooks. How many books did he have before last week?
Mathematics
1 answer:
frez [133]3 years ago
3 0

Easy, 12-8=4+3=7+5=12 So, he had 12 books before last week


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Express -32/243 into power notation​
lesya692 [45]

This problem can take a while if you cannot observer the answer quickly.

First of all we can see that 32=2*2*2*2*2=2^5

243, if you don't know its actually is 3^5

Now we can see that this turns into...

- 2^5/3^5

since the 5th power doesn't change the sign of the original number, we can put the negative in the ( ), if you don't know what I mean look below

(-3)^2=9 Positive

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This problem can be simplified to.

(-2/3)^5

And this is the answer :D

If you have any questions just put them in the comments.

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Step-by-step explanation:

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2 years ago
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