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Romashka-Z-Leto [24]
4 years ago
8

The scores on a test are normally distributed with a mean of 110 and a standard deviation of 22. What is the score that is 3 sta

ndard deviations below the​ mean?
Mathematics
1 answer:
Alborosie4 years ago
7 0

Answer:

Step-by-step explanation:

If the mean is 110, and the standard devaition is 22,

1 standard dev. below the mean is 110-22

2  standard dev below the mean is 110-22-22

3 standard dev below the mean is 110-22-22-22

Hope that helps!

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Please help ill give brainliest answer!
LenKa [72]

Answer:

OC=48

RK=100

Step-by-step explanation:

We can use proportions to find both OC and RK.

\frac{OK}{KY} =\frac{OC}{RY}

\frac{12}{24} =\frac{OC}{96}

24OC=1152

OC=48

\frac{KC}{RK} =\frac{OK}{KY}

\frac{50}{RK} =\frac{12}{24}

12RK=1200

RK=100

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Can someone please explain?
geniusboy [140]

This is an isosceles triangle. The angles at the base are congruent (they have the same measures).

Look at the picture.

We know: The sum of the measures of angles in a triangle is equal 180°.

Therefore we have the equation:

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x=25

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