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Blababa [14]
3 years ago
6

Rachel and Marc drive to work.

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
6 0

Answer:

Step-by-step explanation:

Rachel

d = 90 miles.

d = 90 * 1.6 km = 144 km

t = 1.25 hours.

Average speed = d/ time

Average speed = 144/ 1.25 = 115.2

Marc

d = 244 km

t = 2hr 30 minutes

30 minutes = 1/2 hour = 0.5 hours

Average speed = 244 km / 2.5 hours

Average speed = 97.6

Difference

Difference = Rachel - Marc

Difference = 115.2 - 97.6

Difference = 17.6

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The mean age of 11 women in an office is 31 years old.
BlackZzzverrR [31]

Answer: 30.2

Explanation:

The mean is calculated by taking the sum of the values and dividing by the count.

For instance, for the 6 women, with the mean being 31, we can see that the ages summed to 186:

186

6

=

31

And we can do the same for the men:

116

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=

29

And now we can combine the sum and count of the men and women to find the mean for the office:

186

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116

10

=

302

10

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30.2

Step-by-step explanation:

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2 years ago
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Stels [109]

Answer:  2 1/4 more flour for 9 servings

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3 years ago
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