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Novay_Z [31]
3 years ago
8

A study finds a positive correlation between the number of traffic lights on the most-used route between two destinations and th

e average driving time between the two destinations.
which statement is true ?


a. the correlation is most likely a coincidence


b. the correlation is most likely a causation.


c. the correlation is most likely due to a lurking variable
Mathematics
1 answer:
alukav5142 [94]3 years ago
6 0
Increasing the number of traffic lights on the most used route between the two destinations will increase the amount of time it will take to reach to the other destination, as each traffic light will cause a delay. Therefore, the increasing number of traffic lights are causing an increase in the average time to travel to the other destination.

In this case the correlation is most likely a casuation as the increase in the number of traffic lights is causing an increase in the average driving time between the two destinations.

So, the correct answer is option B
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What is 11/12 divided 2 5/8
lisov135 [29]

Answer:

2 2/21

Step-by-step explanation:

11/2 ÷ 2 5/8

= 11/2 ÷ 21/8

= 11/2 × 8/21

= 88/42

= 44/21

= 2 2/21

Hence 11/2÷2 5/8 is 2 2/21

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3 years ago
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2 years ago
Which of the following animals was not linked to a major disease?
DerKrebs [107]

Answer:

YO ESPERO QUE B

Step-by-step explanation:

5 0
3 years ago
There are a total of 64 students in a drama club and a yearbook club. The drama club has 10 more students than the yearbook club
zaharov [31]

Answer:

y = 27

Step-by-step explanation:

Let d = number Of drama club members

let y = number of yearbook club members

now you can write two equations, one for the total number of students, and one for the difference between them.

d + y =64

d - y = 10

 

to solve for d, add these two lines together (so as to remove the y’s)

2d + 0y = 74

d = 37

now substitute back into one of the formulas

d+y=64

37+y=64

subtract 37 from each side,

y = 27

7 0
3 years ago
Find cos , csc 0, and tan 0, where is the angle shown in the figure.
docker41 [41]

Answer:

Step-by-step explanation:

<u>Trigonometric Ratios</u>

The ratios of the sides of a right triangle are called trigonometric ratios. There are six trigonometric ratios, sine (sin), cosine (cos), tangent (tan), cosecant (csc), secant (sec), and cotangent (cot).

The ratios are valid only in right triangles, or when one of the internal angles is 90°.

Take any of the acute angles as a reference, and the largest side as the hypotenuse, then:

\displaystyle \cos\theta=\frac{\text{adjacent leg}}{\text{hypotenuse}}

\displaystyle csc\theta=\frac{\text{hypotenuse}}{\text{opposite leg}}

\displaystyle \tan\theta=\frac{\text{opposite leg}}{\text{adjacent leg}}

The missing side of the triangle x can be calculated by using Pythagora's Theorem:

10^2=9^2+x^2

Solving:

x^2=10^2-9^2=100-81=19

x=\sqrt{19}

For the angle marked as θ:

\displaystyle \tan\theta=\frac{\text{opposite leg}}{\text{adjacent leg}}

\displaystyle \tan\theta=\frac{\text{9}}{\sqrt{19}}

Rationalizing:

\displaystyle \tan\theta=\frac{9\sqrt{19}}{19}

\displaystyle \cos\theta=\frac{\text{adjacent leg}}{\text{hypotenuse}}

\displaystyle \cos\theta=\frac{\sqrt{19} }{10}

\displaystyle \csc\theta=\frac{\text{hypotenuse}}{\text{opposite leg}}

\displaystyle \csc\theta=\frac{10}{9}

5 0
3 years ago
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