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ehidna [41]
3 years ago
6

C.126 D.115 Geometry math question no Guessing and Please show work

Mathematics
1 answer:
MakcuM [25]3 years ago
4 0

140 - 90 = 50

50/140 = 45/FE

FE = 140 * 45 / 50

FE = 126

Answer

C.126

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Answer:

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Step-by-step explanation:

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julsineya [31]

I have an expression

\sigma = \sqrt{p(1-p)/n}

floating around in my head; let's see if it makes sense.

The variance of binary valued random variable b that comes up 1 with probability p (so has mean p) is

E( (b-p)^2 ) =  (-p)^2(1-p) + (1-p)^2p = p(1-p)

That's for an individual sample. For the observed average we divide by n, and for the standard deviation we take the square root:

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Plugging in the numbers,

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So this is borderline suspect; most surveys will include a two sigma margin of error, say plus or minus 4 percent here, and the results were within those bounds.

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3 years ago
I'll mark brainliest for the right answer! Please hurry!
DaniilM [7]

p=36

because 15 is 3 times 5 so just multiply the perimeter


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Answer:

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Step-by-step explanation:

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