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ivolga24 [154]
4 years ago
7

These dot plots show hourly earnings for a sample of workers in two

Mathematics
1 answer:
mart [117]4 years ago
4 0
The answer to this question is option C
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An airplanes altitude changes -378 feet over 7 minutes. What was the mean change of altitude in feet per minute?
Natalija [7]
Average rate= change in alt / change in time

r=-378/7=-54ft/min
4 0
3 years ago
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Vending machines can be adjusted to reject coins above and below certain weights. The weights of legal U.S. quarters have a norm
tigry1 [53]

Answer: The percentage of legal quarters will be rejected by the vending machine = 2.275%

Step-by-step explanation:

Given: The weights of legal U.S. quarters have a normal distribution with a mean of 5.67 grams and a standard deviation of 0.07 gram.

Let x be the weights of legal U.S. quarters .

Required probability: P(x5.81)

=P(\dfrac{x-\mu}{\sigma}\dfrac{5.81-5.67}{0.07})\\\\=P(z2)\approx0.02275    \ \ \ [By\  P-value\ calculator]

The percentage of legal quarters will be rejected by the vending machine = 2.275%

5 0
3 years ago
Please help me after all of my questions are solved i will do a 100 points giveaway
Umnica [9.8K]

Answer:

A and B

Step-by-step explanation:

4(d-2)

4 times d is 4d

4 times -2 is -8

8 0
3 years ago
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I need help ASAP. What are vertices? What makes a polygon irregular? I'm so confused! How on earth do I solve these?
baherus [9]
1b.regular polygon
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4 years ago
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A store pays $81 for a hockey stick and marks the price up by 5%. What is the amount of the mark-up?
OlgaM077 [116]
.05 is equal to 5%
So for every dollar the mark up is .05cents
So if you times $81 by .05 this will give you the mark up because each of the 81$ needs .05 added to it.

So $4.05 Is the mark up

And

The cost would be markup and original added together
4 0
3 years ago
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