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kolbaska11 [484]
3 years ago
9

For the function F(x)=2x+15x−2, evaluate F(−6)

Mathematics
1 answer:
Sholpan [36]3 years ago
7 0
F(-6) = 2(-6)+15(-6)-2 = -12-90-2 = -104
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Given that Jack biked for 5 \frac{1}{3} hours with an average speed of  12 \frac{1}{2} miles per hour.

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d=speed\times time \\  \\ =12 \frac{1}{2}\times5 \frac{1}{3}= \frac{25}{2} \times \frac{16}{3}  \\  \\ = \frac{200}{3} =66 \frac{2}{3} \ miles

Given that Jim travelled exactly 1 \frac{1}{5} as far as Jack did, then the distance Jim travelled is given by

d=1 \frac{1}{5} \times66 \frac{2}{3}  \\  \\ = \frac{6}{5} \times \frac{200}{3} =80

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