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yan [13]
1 year ago
6

2. Find m∠BAD.Math: 9th Grade GeometryANSWER ASAP!!!!!​

Mathematics
2 answers:
Aleksandr [31]1 year ago
5 0

Answer:

<u>55°</u>

Step-by-step explanation:

<u>Ignore</u> the line AC because it is not needed in this example, and you are left with angle BAD which 31° + 24° sums up to be <u>55°</u>

taurus [48]1 year ago
4 0

Answer:

m∠BAD

Step-by-step explanation:

Hello!

The measure of Angle BAD is the same as the sum of angles BAC and CAD.

  • m∠BAD = m∠BAC + m∠CAD
  • m∠BAD = 31° + 24°
  • m∠BAD = 55°

The measure of Angle BAD is 55°.

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Rachael got a 550 on the analytical portion of the Graduate Record Exam (GRE). If GRE scores are normally distributed and have m
valina [46]

Answer:

Z=-2

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Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

\mu=600 represent the population mean for the Graduate Record Exam (GRE)

\sigma=25 represent the population standard deviation for Graduate Record Exam (GRE)

2) Solution to the problem

Let X the random variable that represent the Graduate Record Exam (GRE) of a population, and for this case we know the distribution for X is given by:

X \sim N(600,25)  

Where \mu=600 and \sigma=25

We want to find the z score for a score of 550. And in order to do this we need to apply the formula for the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

z=\frac{550-600}{25}=-2

So the answer for our case would be Z=-2

This value means that the score of Rachel 550 it's 2 deviations below the mean of the population \mu=600

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