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Sonja [21]
3 years ago
9

I need. Help 12 points

Mathematics
2 answers:
MariettaO [177]3 years ago
8 0

The value of The digit 4 is four ones or 4

viktelen [127]3 years ago
4 0

The answer is:  C. 24

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Suppose that salaries for recent graduates of one university have a mean of $25,700 with a standard deviation of $1350. Using Ch
sergeinik [125]

Answer:

75% of the data will reside in the range 23000 to 28400.

Step-by-step explanation :

To find the range of values :

We need to find the values that deviate from the mean. Since we want at least 75% of the data to reside between the range therefore we have,

1 - \frac{1}{k^2} =\frac{75}{100}

Solving this, we would get k = 2 which shows the value one needs to find lies outside the range.

Range is given by : mean +/- (z score) × (value of a standard deviation)  

⇒ Range : 25700 +/- 2 × 1350

⇒ Range : (25700 - 2700) to (25700 + 2700)

Hence, 75% of the data will reside in the range 23000 to 28400.

3 0
3 years ago
A parent pushes a single child on a swing. Suppose two children now sit on the same swing, and the parent pushes with the same f
yawa3891 [41]

the answer will be D.

4 0
3 years ago
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The number of gallons of water,y, in a swimming pool is modeled by the equation y=7.5x+500,where x represents the time in minute
podryga [215]
Y = 7.5*200 +500
y = 1500 +500
y = 2000

2000 gallons are in the pool 200 minutes after the pump is turned on.
5 0
3 years ago
What's the algebraic expression represents the phrase? Cindy studied seven more hours than Nikki studied. A. n + 7 B. 7 - n C. 7
Angelina_Jolie [31]
It is going to be (A)

6 0
3 years ago
A construction crew can dig a pit at a rate of 1914 meters per hour. How deep can they dig in 6 hours?
hichkok12 [17]

Answer:

11484m

Step-by-step explanation:

if 1914 = 1hour

Then 6hours= ?

6/1 ×1914

= 11484m

4 0
2 years ago
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