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Tema [17]
3 years ago
7

PLEASE HELP ME IF YOU CAN!!!

Mathematics
1 answer:
galina1969 [7]3 years ago
6 0

Answer:

  • 11.775 km

Step-by-step explanation:

<h3>Given</h3>
  • r = 3 km
<h3>To find</h3>
  • Length of 75° arc
<h3>Solution</h3>

Circumference of the circle:

  • C = 2πr
  • C = 2*3.14*3² = 56.52 km

<u>The length of the 75° arc:</u>

  • 56.52*75/360 = 11.775 km
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Answer:

The minimum cost per unit is obtained for an order of 8 units.

Step-by-step explanation:

Since the total cost is modeled by;

C(x)=5x²+320

Then;

1 unit costs; C(x)=5(1)²+320 = 325

cost per unit 325/1 = 325

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cost per unit = 640/8 = 80

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Cost per unit = 32320/80 = 404

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