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aliina [53]
3 years ago
6

Sarah needs to complete 10,008 hours of guitar practice. How many hours of practice a day should she do to reach her goal in 3 y

ears?
Mathematics
1 answer:
avanturin [10]3 years ago
4 0
10008 hours per 3 years is average of 3336 hours per year, or about 9.1 per day.
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The weekly salaries of a sample of employees at the local bank are given in the table below. Employee Weekly Salary Anja $245 Ra
evablogger [386]

The variance for the data is  17,507. 5.

Given

The weekly salaries of a sample of employees at the local bank are given in the table below.

Employee Weekly Salary Anja $245 Raz $300 Natalie $325 Mic $465 Paul $100.

<h3>Variance</h3>

Variance is the expected value of the squared variation of a random variable from its mean value, in probability and statistics.

The mean value of the salaries of employees is;

\rm Mean= \dfrac{245+300+325+465+100}{5}\\\\Mean=287

The variance is given by;

\rm  Variance=\sqrt{\dfrac{(245-287)^2 +(300-287)^2 +(325-287)^2 +(465-287)^2 +(100-287)^2}{5-2}} \\\\Variance = 132.316}\\\\On \ Squaring \ both \ the \ sides\\\\Variance^2=17,507. 5

Hence, the variance for the data is  17,507. 5.

To know more about variance click the link given below.

brainly.com/question/7635845

7 0
3 years ago
A rocket is launched in the air. The graph below shows the height of the rocket hh in meters after tt seconds.
fgiga [73]

Answer:

The answers are=

  1. (38, 0)
  2. time
  3. in seconds
  4. (19, 1768.9)
  5. Height
  6. in meters
3 0
2 years ago
Use the graph to find the slope of the line. Tell what the slope means in this context.
lys-0071 [83]
The slope means the depth per second
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3 years ago
A zoo has a total of 8 lions and tigers. The number of tigers is one less than twice the number of lions. Write a system of equa
valina [46]

Answer:

C. 2L-1

Step-by-step explanation:

:)

4 0
3 years ago
75,981 rounded to the nearest ten-thousand
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Answer:

80,000

Step-by-step explanation:

7 is the tean thousand

Add 1 because 5 is a big amount.

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2 years ago
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