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icang [17]
4 years ago
14

Find the sum: (x3 + 4x2 + 2x - 6) + (5x - 7x2 + 3) A. x3 - 3x2 + 7x + 3 B. x3 - 3x2 + 7x - 3 C. x3 + 3x2 + 7x - 3 D. x3 - 3x2 +

3x - 3​
Mathematics
1 answer:
Andreyy894 years ago
7 0

=x3−3x2+7x−3

your answer is B

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9. Find the volume of the triangular pyramid. (2pts)-10 mI9 m16 m
Makovka662 [10]

Answer:

240 m³

Explanation:

The volume of a pyramid is equal to:

V=\frac{1}{3}\times B\times H

Where B is the area of the base and H is the height of the pyramid.

Then, the base of the pyramid is a triangle, so the area of a triangle is equal to:

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Where b is the base of the triangle and h is the height of the triangle. So, replacing b by 16 m and h by 9 m, we get:

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Therefore, the volume is 240 m³

4 0
2 years ago
14.7x + 4x = 0*(46y+39y) Y=14, Solve for X
Dovator [93]
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