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sergeinik [125]
2 years ago
11

You have 40 minutes to exercise at the gym, and you want to burn 300 calories total using both machines. How much time should yo

u spend on each machine?A photo shows an elliptical trainer marked as 8 calories per minute and a stationary bike marked as 6 calories per minute.
Mathematics
1 answer:
FromTheMoon [43]2 years ago
4 0

Answer

8(40-y) + 6y =300

320 - 8y + 6y =300

-2y=-20

y=10

This leaves x to be 30.

You should spend 30 minutes on machine 1 and 10 minutes on machine 2.

Step-by-step explanation:

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BlackZzzverrR [31]

Answer:

Is the number of tosses for each coin enough for the sampling distribution of the difference in sample proportions PA-PB to be approximately normal?

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Step-by-step explanation:

a) Data and Calculations:

The probability of coin A landing tails-side up = 0.5

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The proportion on either side is equally distributed.

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The proportion of times coin B lands tails-side up (PB) = 20 * 0.8 = 16

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6 0
3 years ago
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Answer:

<h2>The radius is 4 units long.</h2>

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