Please help me solve

Mathematics

1 answer:

lana66690 [7]2 years ago

6 0

Step-by-step explanation:

$m(x) = \frac{x}{1 + {x}^{2} } \\ \\ m( \frac{1}{x} ) = \frac{ \frac{1}{x} }{ \frac{ {1}}{ {x}^{2} } + 1} \times \frac{ {x}^{2} }{ {x}^{2} } = \frac{x}{1 + {x}^{2} } = m(x)$

m(1/x) = m(x)

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A plane leaves jfk international airport and travels due west at 570 mi/hr. another plane leaves 20 minutes later and travels 22

olga2289 [7]

Distance=speed*time
distance traveled by plane A after 40 minutes:
distance=570×40/60=380 miles

Distance traveled by B after 40 minutes
distance=20/60×585=195 miles

Thus the distance between them will be given using cosine law:
c^2=a^2+b^2-2ab Cos C
thus we shall have:
c^2=380^2+195^2-2*380*195*cos22
c^2=45016.35275
c=212.171 miles
Thus the distance between them after 40 minutes is 212.171 miles

5 0

4 years ago

Solve the equation b/4+2=-1.<br> b=

Zolol [24]

Answer:

$\frac{b}{4} + 2 = - 1$