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Vlad [161]
3 years ago
6

Find the missing length indicated.​

Mathematics
1 answer:
kogti [31]3 years ago
3 0

Answer:

Step-by-step explanation:

x is the geometric mean because it is a part of both the small triangle on the left (with base 81) and the whole triangle (with base 225). Setting up the geometric means formula:

\frac{81}{x}=\frac{x}{225} and cross multiply to get

x^2 =18225 so

x = \sqrt{18225} and

x = 135

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A grocer stacks oranges in a four-sided pyramid that is 7 layers high. How many oranges are in the pile?
gayaneshka [121]
Short Answer D
P(1) = 1(1+1)(2*1 + 1)/6
P(1) = 1(2)(2 +1) / 6
P(1) = 1(2)(3)/6
P(1) = 1

P(2) = 2(2+1)(2*2 + 1) / 6
P(2) = 2(3)(5) / 6
P(2) = 5 So this formula is adding as it goes along. To Find the Total all we need do is use the formula to calculate P(1) to P(7)

P(7) = 7*(7 + 1)(2*7 + 1)/6
P(7) = 7 * 8 * 15 / 6
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P(7) = 140 <<<< Answer
4 0
3 years ago
Find c such that (−3,−8), (−7,−6), and (c,4) lie on a line.
Nutka1998 [239]
If the 3 points are collinear, then the slopes of all line segments connecting the points are the same.

Thus, 

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m = ------------- = -------- = -1/2
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Then the following must be true:

             4-(-6)          10
-1/2 = ------------ = ---------
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Cross multiplying, -(c+7) = 20, and c+7 = -20, so that c = -27
8 0
3 years ago
I need help on how to get the answer too number 27.
KiRa [710]
A^2 + b^2 = c^2
3^2 + 8^2 = c^2
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73 =c^2
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c= 8.544

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Answer:

3K

Step-by-step explanation:

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10 months ago
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Stella [2.4K]

Answer:

Shesh

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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