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FrozenT [24]
2 years ago
8

A distribution of 1000 test scores has a mean of u = 287. Following standardization, what is the standard deviation for this dis

tribution?
Mathematics
1 answer:
blondinia [14]2 years ago
5 0

Answer:

c. σ = 1

Regardless of the original distribution, after standardizing to z-scores, the standard deviation is always 1.

Step-by-step explanation:

quizlet

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Petra jogs 3 miles in 30 minutes. At this rate, how long would it take her to jog 7 miles?
NikAS [45]
30 minutes / 3 miles = 10 minutes for 1 mile

7 miles * 10 minutes per mile = 70 minutes total to run 7 miles
8 0
3 years ago
How do I solve this with explanation?
kakasveta [241]

Answer:

x = 106°

Step-by-step explanation:

You must understand the picture to answer the question correctly.

The angle to the right has measure 68°.

The angle to the left has measure x, an unknown number.

Notice that 174° is written in gray, not black, and notice that the curve is also in gray. That means the entire angle made up of 68° and x measures 174°.

x + 68° = 174°

Subtract 68° from both sides.

x = 106°

7 0
2 years ago
Skylar is filling a barrel with water. The graph shows the relationship between time in minutes and the gallons of water in the
lisov135 [29]

Answer:

t>15  will be inequality which shows the times there will be more than 10 gallons in the barrel.

Step-by-step explanation:

To determine:

Write an inequality showing the times there will be more than 10 gallons in the barrel.

Information Fetching and Solution Steps:

  • Skylar is filling a barrel with water.
  • The graph shows the relationship between time in minutes and the gallons of water in the barrel.

As the questions asks to determine the inequality showing the times there will be more than 10 gallons in the barrel.

For inequalities with 'more than', we use the 'greater than' symbol.

The graph shows that at time 15 minutes, the number of gallons of water is being shown as 10. As we have to determine the inequality for the time there will be more than 10 gallons in the barrel. So, time must be greater than 15 when there will be more than 10 gallons in the barrel.

If time is represented by 't', then the inequality showing the times there will be more than 10 gallons in the barrel will be:

                                                                   t>15

Therefore,  t>15  will be inequality which shows the times there will be more than 10 gallons in the barrel.

4 0
3 years ago
7x + 2y = 24<br>8x + 2y = 30​
bagirrra123 [75]
(8x + 2y) - (7x + 2y) = 30 - 24

X = 6
5 0
3 years ago
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A printing company’s costs for printing a book are $500 for labor and running the necessary machinery plus $3 per book printed.
dybincka [34]
C
500+3n
3n
n
Max books = 266 for a total cost of $1298
5 0
3 years ago
Read 2 more answers
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