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Lera25 [3.4K]
3 years ago
7

mr. Chiang announced the grade distribution weeks book reports. Of the 20 students in class, 8 received A's for their book repor

ts,11 receive b's, and 5 receive C's. when is student is chosen at random to be the first one to read his or her book to report to the class, what is the probability that the student choose that has received an A for the book report?
Mathematics
1 answer:
vampirchik [111]3 years ago
3 0

Answer:

yes

Step-by-step explanation:

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Prove that: 5^31–5^29 is divisible by 100.
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Answer:

See explanation

Step-by-step explanation:

Consider the expression

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First, factor it:

5^{31}-5^{29}=5^{29}\cdot(5^2-1)=5^{29}\cdot (25-1)=24\cdot 5^{29}

Note that

100=25\cdot 4

Then

5^{31}-5^{29}=24\cdot 5^{29}=6\cdot 4\cdot 25\cdot 5^{27}=6\cdot 100\cdot 5^{27}

This shows that number 100 is a factor of the expression 5^{31}-5^{29} and, therefore, this expression is divisible by 100.

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Answer:

706.5 cm^2

Step-by-step explanation:

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