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Juli2301 [7.4K]
1 year ago
11

Use 3.14 for the value of pie , and round your answers to two decimal places, where applicable. If the radius of a circle is 3 c

m, what is its circumference?​
Mathematics
1 answer:
Bingel [31]1 year ago
6 0

Answer:

18.85

Step-by-step explanation:

C=2πr

2(pi)3=18.85

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Jerome burns 4 cal/min walking and 10 cal/min running. He walks between 10 and 20 min each day and runs between 30 and 45 min ea
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Answer:

20 minutes should spend on walking and 30 minutes on running.

Step-by-step explanation:

Let x represents the minutes spent on walking and y represents the minutes spent on running,

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Now, he walks between 10 and 20 min each day,

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Also, he runs between 30 and 45 min each day,

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By graphing 10 < x < 20 and 30 <  y < 45,

We obtained the vertices of feasible region,

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At (10, 45),

Z = 4(10) + 10(45) = 40 + 450 = 490,

At (20, 45),

Z = 4(20) + 10(45) = 80 + 450 = 530,

At (10, 30),

Z = 4(10) + 10(30) = 40 + 300 = 340,

At (20, 30)

Z = 4(20) + 10(30) = 80 + 300 = 380

Hence, maximum calories is 530 when 20 minutes spent on walking and 30 minutes spent on running.

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