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Rufina [12.5K]
3 years ago
11

Someone help need this done right now I’ll mark u brainliest

Mathematics
1 answer:
Ad libitum [116K]3 years ago
3 0

Answer:

89 meters

Step-by-step explanation:

We know it's 9 + "the height of the triangle".

Fortunately, the height of the triangle (let's call it y) can be computed from:

y^2 + 18^2 = 82^2 (Pythagoras theorem).

y^2 = 82^2 - 18^2 = 6724 - 324 = 6400

y = 80 (or y = -80 but it doesn't make sense in geometry).

so x = y + 9 = 89;

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2 years ago
Find c.<br><br> i’ll mark as brainiest if correct
Alexxx [7]

Answer:

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Step-by-step explanation:

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A concrete mix is designed to withstand 3000 pounds per square inch​ (psi) of pressure. The following data represent the strengt
ss7ja [257]

Answer:

Mean = 3640

Mode = 4100

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Step-by-step explanation:

We are given the following data in the question:

Strength of casts (in psi):

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Formula:

Mean = \displaystyle\frac{\text{Sum of all observation}}{\text{Total number of observations}}

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Mode is the entry with most frequency. Thus, for the given sample mode = 4100.

Median

Since n = 9 is odd,

Formula:

Median = \displaystyle\frac{n+1}{2}th~term

Data in ascending order:

2950,3100,3200,3460,3830,3970,4050,4100,4100

Median = 5th term = 3830.

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3 years ago
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36


Step-by-step explanation:


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80 in.

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