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seraphim [82]
3 years ago
10

The surface area of a triangular pyramid is 305 square inches. The area of the base is 35 square inches. Each face has a base of

9. What is the slant height? 
DON'T ANSWER THE QUESTION! I ALREADY HAVE THE ANSWER. SORRY, I JUST GOT THE ANSWER. I DON'T KNOW HOW TO DELETE THIS QUESTION.
Mathematics
1 answer:
musickatia [10]3 years ago
3 0
Subtract 35 from 305, and you get 270. The formula for the area of a triangle, where b is base and h is height, is b * h / 2. There are three faces, or 3 triangles, and we know the base, so we can say that 3 * 9 * h / 2 = 270 => 27 * h / 2 = 270 => 27 * h / 2 * 2 = 270 * 2 => 27 * h = 540 => 27 * h / 27 = 540 / 27 => h = 20, so the slant height is 20 inches.
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6 0
2 years ago
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Question 15 of 40
PilotLPTM [1.2K]

Answer:

Option C: n = 32; p^ = 0.4

Step-by-step explanation:

The normal curve can be used in this case if; np ≥ 10 or n(1 - p) ≥ 10

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np = 28 × 0.3 = 8.4 < 10

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B) For n = 28 and p = 0.9;

np = 28 × 0.9 = 25.2 > 10 Ok

n(1 - p) = 28(1 - 0.9) = 2.8 Not Ok

Thus, it can't be used

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4 0
3 years ago
[ f(x) = 3x + 2<br> g(x) = x2<br> Find gf(5)<br> Find fg(x)
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Answer:

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3 years ago
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