Let f(x) = x^2+6 and g(x) = x+8/x . Find (g•f)(-7)

Mathematics

2 answers:

iren [92.7K]3 years ago

5 0

Answer:

63/55

Step-by-step explanation:

i took the exam

BaLLatris [955]3 years ago

3 0

If:
x = - 7

We know that:
$f(x) = x^2 + 6$ → $f(-7) = (-7)^2 + 6 = 49 + 6 = 55$
$g(x) = \frac{x+8}{x}$

Soon:
$(gof)(f(-7)) = \frac{x+8}{x}$
$(gof)(55) = \frac{55+8}{55}$
$\boxed{\boxed{(gof)(55) = \frac{63}{55}}}\end{array}}\qquad\quad\checkmark$

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3 years ago

Two ships leave the same port in different directions, forming a 120° angle between them. One ship travels 70 mi. and the other

kondaur [170]

Answer : Distance between the ships to the nearest miles = 106.03 ≈ 106 mi.

Explanation :

Since we have shown in the figure below :

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So, we use the cosine rule , which states that

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