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Vadim26 [7]
3 years ago
12

Mabel has read 3/4 of a book, or 390 pages. How many pages are in the entire book?

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
8 0
520 pages. 390 divided by 3 is 130. Take that times 4 and you get 520. To check it, I took 520 divided by four (or you can multiply by 1/4) and got 130. Hope it helps!
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If -3m + 1 &gt; 7, which of the following is a solution set for m?
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We want to find the solution set for m in:

-3m+1>7

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\begin{gathered} -3m>7-1 \\ -3m>6 \end{gathered}

Now, divide both sides by -3. When you divide an inequality by a negative number, <em>the sign changes direction</em>:

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