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kirill [66]
4 years ago
15

From September 1981 to September 1984 the enrollment at a particular school declined to 11%. If the number of students enrolled

at that school in September 1984 was 712 what was the enrollment in September 1981?
a) 78 b) 634 c) 701
d) 790 e)800
Mathematics
1 answer:
LenaWriter [7]4 years ago
4 0
634, you have to multiply it by 89% of the original number, 712, to deduct 11%


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Answer:

<h2>The area of the base is 144 square inches.</h2><h2>The area of each triangular face is 66 square inches.</h2><h2>Grabiel needs 408 square inches of paint.</h2>

Step-by-step explanation:

The complete problem is attached.

Notice that the figure is a square pyramid, where its base dimensions are 12 inches by 12 inches, which represents an area of

B=12 \times 12 = 144 \ in^{2}

The slant height of the pyramid is 11 inches, which allow us to find the area of each triangle face

A=\frac{1}{2}bh =\frac{1}{2}(12)(11)= 66 \ in^{2}

But there are four triangle faces, so A_{faces} =4(66)=264 \ in^{2}.

Therefore, the area of each triangular face is 66 square inches.

So, the total surface area would be the sum

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3 years ago
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3 years ago
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Misha Larkins [42]

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Work is shown below.

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4 years ago
The demolition durby is underway is underway
k0ka [10]
How does have anything to do with schooling or anyway helping you learn? Or how does this have anything to do with math also.
4 0
3 years ago
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