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Ghella [55]
1 year ago
12

The school library has 286 books. If the school librarian buys 12 books eachmonth for five months, how many books will the libra

ry have in all?
Mathematics
1 answer:
Maru [420]1 year ago
4 0
\begin{gathered} \text{Initial numbers of books: 286 } \\ \text{Total number of books bought over a period of 5 months: 12 }\times\text{ 5 = 60} \\ \text{Total Number of Books in the Library is:  286 + 60 = }346 \end{gathered}

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Magan bought an electric bill at 85% of the regular price she paid $32.89 for the drill what was the regular price
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Answer:

$38.69

Step-by-step explanation:

To find the regular price, create a proportion.

\frac{32.89}{x}=\frac{85}{100}

To solve for the regular price x, cross multiply the numerator and denominator of each fraction.

32.89*(100) = x(85)

3289=85x

38.69 = x

4 0
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3 years ago
Find the area of an equilateral triangle with apothem 7 cm.
lbvjy [14]
So hmm check the picture below

using the 30-60-90 rule, we get that much.. .bear in mind, an equilateral triangle has all equal sides, and therefore, all equal angles, so each angle is 60°, run a median through it from the center, and you split it in half

\bf \textit{area of an equilateral triangle}\\\\
A=\cfrac{s^2\sqrt{3}}{4}\qquad 
\begin{cases}
s=\textit{length of one side}\\
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s=14\sqrt{3}
\end{cases}\implies A=\cfrac{(14\sqrt{3})^2\sqrt{3}}{4}
\\\\\\
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Answer:

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