A maintenance company charges an office owner $1,800 to clean 5 of his machines. How many should he charge to fix 3 machines?

Mathematics

1 answer:

Tems11 [23]3 years ago

5 0

Answer:

$1080

Step-by-step explanation:

Take 1800 and put it over 5, like a fraction and solve to make the denominator 1. Then multiply by three because we are looking for the cost of 3 machines

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The mean score of 8 players is 14.5. If the highest individual score is removed the mean of the score of the remaining 7 players

AfilCa [17]

Answer:

The highest score is 32.

Step-by-step explanation:

We are given the following in the question:

The mean score of 8 players is 14.5.

Let x denote the highest score.

If x is removed, the mean of the score of the remaining 7 players is 12.

Formula for mean:

$\bar{x} = \dfrac{\displaystyle\sum x_i}{n}$

Putting values, we get:

$14.5 = \dfrac{\displaystyle\sum x_i}{8}\\\\\Rightarrow \displaystyle\sum x_i = 116\\\\12 = \dfrac{\displaystyle\sum y_i}{7}\\\\\Rightarrow \displaystyle\sum y_i = 84\\\\\displaystyle\sum y_i = \displaystyle\sum x_i -x \\\\84 = 116 - x\\\Rightarrow x = 32$

Thus, the highest score is 32.

4 0

4 years ago

the area of a rectangle is 42 square inches and one side is 12 inches long . find the perimeter of the rectangle

valentinak56 [21]

The area is one side times the other side
Make the other side x.
12x=42
x=42/12=3.5
The perimeter is 2x+2y where x and y are sides of the rectangle.
P= 2(3.5)+2(12)=7+24=31 inches
Hope this helps.

6 0

3 years ago

How long is a bus journey that starts at 8.55 a.m. and ends at 9.17 a.m.?

vladimir1956 [14]

Answer:

5+17=22 minute

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Madeline works as a part time job at Parkland Hospital for $20 per hour. She worked for 10 hours last week and must pay 10% in t

ioda

Answer:

Step-by-step explanation: