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Margarita [4]
3 years ago
11

line segment AB has endpoints A (5,-3) and -(7,-5). what are the coordinates of the midpoint of segment AB

Mathematics
1 answer:
loris [4]3 years ago
5 0

Answer:

see below

Step-by-step explanation:

To find the x coordinate of the midpoint, add the x coordinates together and divide by 2

(5+7)/2 = 12/2 =6

If that was supposed to be -7

(5-7)/2 = -2/2 =-1

To find the y coordinate of the midpoint, add the y coordinates together and divide by 2

(-3+-5)/2 = -8/2 =-4

Either (6,-4) if +7  or (-1,-4) if -7

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3 years ago
A statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20. Use thi
rjkz [21]

Answer:

\mu = 14.5\\

\sigma = 5.071\\

k = 1.084

Step-by-step explanation:

given that a  statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20.

i.e. his findings with respect to probability are

P(9

Recall Chebyshev's inequality that

P(|X-\mu |\geq k\sigma )\leq {\frac {1}{k^{2}}}\\P(|X-\mu |\leq k\sigma )\geq 1-{\frac {1}{k^{2}}}\\

Comparing with the Ii equation which is appropriate here we find that

\mu =14.5

Next what we find is

k\sigma = 5.5\\1-\frac{1}{k^2} =0.15\\\frac{1}{k^2}=0.85\\k=1.084\\1.084 (\sigma) = 5.5\\\sigma = 5.071

Thus from the given information we find that

\mu = 14.5\\\sigma = 5.071\\k = 1.084

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3 years ago
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Answer:

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Step-by-step explanation:

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Plug them into the equation.

y = mx + b

<em>y = 3x + 1</em>

6 0
3 years ago
Read 2 more answers
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