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scZoUnD [109]
2 years ago
11

If you do 12 minutes of a 45 minute workout how many calories is it? (the 45 minutes is 1000 calories in total)

Mathematics
1 answer:
velikii [3]2 years ago
7 0

Answer:

266\frac{2}{3}

Step-by-step explanation:

if a 45 minute workout is 1000 calories, at the same rate, a 12 minute workout would be 266 calories and 2 thirds. \frac{12}{45} x 1000 = 266\frac{2}{3}

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Answer:

(1) 2π - x² = 0 (2) x = 2.5 cm (3) perimeter = 10 cm

Step-by-step explanation:

(1)The area of the circular coin without the inner square removed is πr² where r = 3 cm is the radius of the coin. So, the area of the coin without the inner square removed is πr² = π(3 cm)² = 9π cm²

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The area A of the each face of the coin is thus A = 9π - x²

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Since x cannot be negative, we take the positive answer.

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The perimeter of the square, p is given by p = 4x

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