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2 years ago

13

Hyung-Jin did an analysis of starting salaries of elementary school teachers in his area. He called three schools and was quoted

the following salaries: \$28,300,\$27,000 , and $ 3,000, . What is the average salary in his area? Show your work.

1 answer:

Airida [17]2 years ago

4 0

Answer:

average - $19,333.33

Step-by-step explanation:

$28,300, $27,000 , and $ 3,000

total =58,000/3 = 19,333.33

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A group surveyed a mix of people below and above 40 years old about whether or not they visit a dentist once a year. This table

Rama09 [41]

The frequency table that shows the relative frequency of people older than 40 and don't visit the dentist is:

D. Visit Dentist Yearly Don’t Visit Dentist Yearly

Below 40 0.27 0.73

Above 40 0.57 0.43

<h3>What is the relative frequency required?</h3>

The relative frequency of those older than 40 and don't go annually to a dentist can be found as:

= Number of over 40 who don't go to dentist / Total of those over 40 surveyed

Solving gives:

= 13 / (17 + 13)

= 13 / 30

= 0.43

Find out more on relative frequency at brainly.com/question/16832475.

#SPJ1

4 0

1 year ago

-2|x-4|+7=-3 how do i solve this absolute value problem

ira [324]

Let's do this step by step:
Subtract both sides by 7
-2|x-4|= -10
Divide each side by -2
|x-4|= 5
Now since this is an absolute value equation, you will have two answers. This means you make the equation both positive and negative.
X-4= 5and -(x-4)= 5
Solve for x for both
X-4= 5: add four on both sides
X= 9
-x+ 4= 5: subtract 4 and divide by -1
X= -1
So your answer is: X= -1 , 9

4 0

3 years ago

The sum of - 7/9 and 11/18 is _____

ollegr [7]

Answer:

$-\frac{1}{6}$

Step-by-step explanation:

Common denominator: 18

-14/18 + 11/18

= -3/18

Reduce:

-1/6

6 0

2 years ago

Read 2 more answers

Lilian has 42 feet of yarn. She wants to cut the yarn into 8 equal parts. How long will each part be?

GrogVix [38]

Answer:

A. Five and two eighths feet.

Step-by-step explanation:

42 (feet of yarn) ÷ 8 (equal parts) = 5.25 (feet of yarn that each part is)

5.25 =

$5 \frac{1}{4}$

or

$5 \frac{2}{8}$

because 1/4 = 2/8.

Hope this helps!

3 0

2 years ago

Read 2 more answers

Suppose that the duration of a particular type of criminal trial is known to be normally distributed with a mean of 22 days and

Alika [10]

Answer:

25.5 days

Step-by-step explanation:

Mean number of days (μ) = 22 days

Standard deviation (σ) = 6 days

Z-score for the 72nd percentile (according to tabulated values) = 0.583

The z-score for any number of days, X, is determined by:

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

The value of X that is greater than 72% of the trial times is:

$0.583=\frac{X-22}{6}\\ X=25.5\ days$

Therefore, 72% of all of these types of trials are completed within 25.5 days.

6 0

3 years ago