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What does it mean to say that data have a positive correlation?

1 answer:

3 0

Answer:

A positive correlation is a relationship between two variables in which both variables move in tandem (the same direction)

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An airplane is flying at a speed of 500 mi/h at an altitude of one mile. The plane passes directly above a radar station at time

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Answer:

a) $s=\sqrt{1+d^2}$

b)d(t)=500t

c) $s(t) =\sqrt{1+250000t^2}$

Step-by-step explanation:

d = Horizontal distance

s = the distance between the plane and the radar station

The horizontal distance (d), the one mile altitude, and s form a right triangle.

So, use Pythagoras theorem

$Hypotenuse^2=Perpendicular^2+Base^2$

$s^2=1^2+d^2$

a) $s=\sqrt{1+d^2}$

(b) Express d as a function of the time t (in hours) that the plane has flown.

$distance = speed \times time$

d(t)=500t

$s(t) =\sqrt{1+d^2}$

using b

$s(t) =\sqrt{1+(500t)^2}\\s(t) =\sqrt{1+250000t^2}$

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Solve 3(3×2) in a rectangular array

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Step-by-step explanation:

3(3)(2)

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Step-by-step explanation:

After doing this you add the two equations together and follow the systems of equations as normal

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Therefore y = 2

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