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marin [14]
3 years ago
15

Michelle, Jennifer, and Betty volunteered to make cupcakes for a school fundraiser. They've been asked to make 100 cupcakes. Mic

helle can make 6 cupcakes in an hour. Jennifer can make 18 cupcakes in two hours. Betty can make 24 cupcakes in two hours. How long will it take to make 100 cupcakes if they work together?
A. 3 19/27 Houurs
B. 2 2/9 Hours
C. 4 1/6 Hours
D. 1 23/27 Hours
Mathematics
1 answer:
erastovalidia [21]3 years ago
3 0
B. 2 2/9 hours.

in 2 hours the will already have made 96 cupcakes so the only logical answer is B
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Question 1
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Using the weighted mean, the coordinate of P is of P = -1.77.

<h3>What is the missing information?</h3>

This problem is incomplete, but researching it on a search engine, the points and weights are given as follows:

  • D = 2 with a weight of 3.
  • B = -6 with a weight of 9.
  • A = -9 with a weight of 2.
  • C = -1 with a weight of 3.
  • E = 6 with a weight of 5.

<h3>What is the weighted mean?</h3>

The weighted mean is given by the <u>sum of all elements in a data-set multiplied by it's weight, divided by the sum of the weights</u>.

Hence, for the points this problem, the weighted mean is given as follows:

P = (2 x 3 - 6 x 9 - 9 x 2 - 1 x 3 + 6 x 5)/(3 + 9 + 2 + 3 + 5) = -1.77.

The coordinate of P is of P = -1.77.

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