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klio [65]
3 years ago
13

The radius of a circle is increased by 3 in., which increases the area by 100 in. Find the radius of the original circle. Round

to the nearest hundredth.
Mathematics
1 answer:
Licemer1 [7]3 years ago
6 0

Answer:

3.81 inches

Step-by-step explanation:

πr² + 100 = π(r+3)²

divide by π and simplify:

r² + (100/π) = r² + 6r + 9

100/π = r² + 6r + 9

31.8309886184 - 9 = r² +6r

r² = 6r - 22.8309886184

0 = 6r - 22.8309886184

22.8309886184 = 6r

divide by 6:

3.80516476973 ≈ 3.81 inches

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1. A company produces two types of nutritional supplements; Energize and Excel. Energize contains 26 mg of vitamin A, 42 mg of v
geniusboy [140]

Answer:

1)A) Minimize C = 40x + 100y.

2) d) 7x + 8y ≤ 190, 5x + 4y ≤ 22, x ≥ 0, y ≥ 0.

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Step-by-step explanation:

1) Energize pills cost 40 cents each, while Excel pills cost 100 cents each. If x represent the energize pills and y represent the excel pills, the objective function would be:

minimize cost = cost of energize pill + cost of excel pill

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2) Let x = the number of mountain bikes they produce, and let y = the number of racing bikes they produce.

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17x + 25y ≥ 140

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x ≥ 0, y≥ 0

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3 years ago
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Answer:

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Step-by-step explanation:

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