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3 years ago

5

A train departs from New York City and travels toward Chicago traveling at an average speed of 75 miles per hour. What best desc

ribes the train's distance from Chicago as time increases?

2 answers:

Marta_Voda [28]3 years ago

5 0

Answer:

the distance is decreasing

Step-by-step explanation:

ss7ja [257]3 years ago

3 0

Answer: the distance is decreasing

Step-by-step explanation:

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Prove : (sec θ - tan θ )^2 = 1 - sin θ /1+sin θ

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$(sec x - tan x)^2 \\ \\ = sec^2x - 2 sec x tan x + tan^2 x \\ \\ =(1+tan^2 x) - 2 sec x tan x +tan^2 x \\ \\ =1 - 2 sec x tan x + 2 tan^2 x \\ \\ = 1 - 2tan x(sec x - tan x) \\ \\ =1 - \frac{2 sin x}{cos x} (\frac{1-sin x}{cos x}) \\ \\ = 1 - \frac{2 sin x (1-sin x)}{cos^2 x} \\ \\ =1 - \frac{2 sin x (1-sin x)}{1-sin^2 x} \\ \\ =1 - \frac{2 sin x (1-sin x)}{(1-sin x)(1+sin x)} \\ \\ =1-\frac{2 sin x}{1+sin x}$

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irinina [24]

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kap26 [50]

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The graph crosses the x-axis at x = 0 and touches the x-axis at x = 3.

Step-by-step explanation:

When you graph this equation, you should see the zeros it passes and touches.

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luda_lava [24]

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Step-by-step explanation:

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3 years ago

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kupik [55]

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