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Pachacha [2.7K]
3 years ago
14

What is f[g(7)] for the following functions?

Mathematics
2 answers:
Maksim231197 [3]3 years ago
8 0

Answer:

C

Step-by-step explanation:

To evaluate f(g(7)), substitute x = 7 into g(x), then substitute the result into f(x)

g(7) = (2 × 7) - 5 = 14 - 5 = 9, then

f(9) = 3(9)² - 4 = 243 - 4 = 239 → C

posledela3 years ago
6 0

Answer:

the answer to the equation is C

Step-by-step explanation:

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At noon, ship a is 40 nautical miles due west of ship b. ship a is sailing west at 18 knots and ship b is sailing north at 17 kn
igor_vitrenko [27]

The distance between the ships changing at 92.29 Knots

  • Using the position of ship A as the reference point, at time t measured in hours past noon, ship A is 18 t miles west of this point and ship B is 40 + 17t north of this point.
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                              d(t) = \sqrt{(18t)^{2} + (40+17t)^{2} } \\

The rate of change of distance is -

                              \frac{dd}{dt} = \frac{36t + 2(40 + 17t)17}{2\sqrt{18t^{2} + (40 + 17t) } }

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