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8090 [49]
3 years ago
15

You will have 27 points if you can help me with this please!!!!

Mathematics
2 answers:
KatRina [158]3 years ago
5 0

Answer:1: P 2: d 3:a

Step-by-step explanation:

Alina [70]3 years ago
4 0

Answer:

P

D

A

Step-by-step explanation:

The center of the circle is the middle point.It is located in the middle of the diameter, in the middle of a central right angle, and all the points of a circle lie at an equal distance from the center.

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The point at which the number lines intersect on the coordinate plane is the (origin, x-axis).
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It is the origin for you.
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3 years ago
Can someone help me... What is the answer
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z = 2y

Step-by-step explanation:

x = 2y..... (given)

z = x... (exterior alternate angles)

z = 2y

8 0
2 years ago
Which equations are equivalent to -1/4(x)+3/4=12? Select all that apply.
ELEN [110]

Answer:

B and E

Step-by-step explanation:

3 0
3 years ago
Altlantic Auditorium has 1500 seats. Tickets were sold for 900 of the seats. for what percent of the seats were tickets sold?
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3 0
3 years ago
One year had the lowest ERA​ (earned-run average, mean number of runs yielded per nine innings​ pitched) of any male pitcher at
lord [1]

Answer:

Thomas had the better year relative to their​ peers.

Step-by-step explanation:

<u>The complete question is</u>: One year Thomas had the lowest ERA​ (earned-run average, mean number of runs yielded per nine innings​ pitched) of any male pitcher at his​ school, with an ERA of 3.31. ​Also, Karla had the lowest ERA of any female pitcher at the school with an ERA of 3.02. For the​ males, the mean ERA was 4.837 and the standard deviation was 0.541. For the​ females, the mean ERA was 4.533 and the standard deviation was 0.539. Find their respective​ z-scores. Which player had the better year relative to their​ peers, or ​? ​(Note: In​ general, the lower the​ ERA, the better the​ pitcher.)

We are given that for the​ males, the mean ERA was 4.837 and the standard deviation was 0.541. For the​ females, the mean ERA was 4.533 and the standard deviation was 0.539.

As, we know that the z-score is calculated by the following formula;

                                 Z  =  \frac{X-\mu}{\sigma} ~ N(0,1)

where, \mu = population mean

           \sigma = standard deviation

Now, firstly we will calculate the z score for Thomas;

z-score = \frac{X-\mu}{\sigma}

            = \frac{3.31-4.837}{0.541}  = -2.823

{Here, the mean ERA for the males was 4.837 and the standard deviation was 0.541}

Similarly, we will calculate the z score for Karla;

z-score = \frac{X-\mu}{\sigma}

            = \frac{3.02-4.533}{0.539}  = -2.807

{Here, the mean ERA for the females was 4.533 and the standard deviation was 0.539}

Now, it is stated in the question that the lower the​ ERA, the better the​ pitcher.

So, we can clearly see that Thomas had a lower ERA of z-score as -2.823 < -2.807. This means that Thomas had the better year relative to their​ peers.

5 0
3 years ago
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