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Vikki [24]
2 years ago
15

I need help on this 8th grade math this is due tomorrow.

Mathematics
1 answer:
LekaFEV [45]2 years ago
6 0

Answer:

<h2>u²=6.25</h2><h2>p²=5</h2>

Step-by-step explanation:

Raise 2.5 to the power of 2 =

6.25

Pull terms out from under the radical, assuming positive real numbers =

5

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D.<br>b. If Efx = 100 + 75x and N= 20 + 15x, find the mean.​
Nady [450]

Answer:

1)175 2)35

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7 0
3 years ago
To conduct a survey on current social work majors, a researcher gets a list of all students who have declared a social work majo
Ede4ka [16]

The list is known as the sampling frame.

To conduct a survey on current social work majors, a researcher gets a list of all students who have declared a social work major from the registrar from which a sample will be drawn.

This list is known as a sampling frame.

The sampling frame is the list from which units are drawn for the sample.

Hence, the list is known as the sampling frame.

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3 0
1 year ago
Pls help me guys I'm so stuck on this!
Nikitich [7]
x+x+x+5+5=3x+10
7 0
2 years ago
Read 2 more answers
The distribution of scores on a recent test closely followed a Normal Distribution with a mean of 22 points and a standard devia
maksim [4K]

6.68% of the students scored at least 19 points on this test while the 85 percentile has a test score of 24.08 points

The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

z=\frac{x-\mu}{\sigma} \\\\where\ \mu=mean.\sigma=standard\ deviation, x=raw\ score\\\\Given\ that\ mean(\mu)=22,standard \ deviation (\sigma)=2\\\\For\ x>19:\\\\z=\frac{22-19}{2}=1.5

P(x > 19) = P(z > 1.5) = 1 - P(z < 1.5) = 1 - 0.9332 = 0.0668

6.68% of the students scored at least 19 points on this test

b) 85 percentile corresponds to a z score of 1.04

z=\frac{x-\mu}{\sigma}\\\\1.04 =\frac{x-22}{2} \\\\2.08=x-22\\\\x=24.08

The 85 percentile has a test score of 24.08

Find out more at: brainly.com/question/25012216

7 0
3 years ago
Find the value of x, y and z. Write reasons
WARRIOR [948]

Answer:

z= 115 (vertically opposite angles)

x= 65 (straight angle) 180-115=65

y=65 (vertically opposite angle)

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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