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3 years ago

A study of several cities shows a positive correlation between the number of churches and the

Mathematics

1 answer:

gtnhenbr [62]3 years ago

3 0

Answer-

A. More churches lead to more crimes.

Solution-

Properties of Correlation Coefficient,

1- A positive correlation means that if one variable gets bigger, the other variable tends to get bigger.

2- A negative correlation means that if one variable gets bigger, the other variable tends to get smaller.

Here,there is a positive correlation between the number of churches and the city’s crime rate. So as the number of churches increase, the crime rate also gets increased.

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Three of the expressions will give the amount that remains after t years of a certain radioactive substance. Which expression is

MakcuM [25]

Answer:

The answer is D

Step-by-step explanation:

4 0

3 years ago

PLEASE HELP SOMEONE!!!

evablogger [386]

Answer:

y = -2x

Step-by-step explanation:

For direct variation: y = kx, where k is the constant of proportionality.

Given that Y equals -12 when x equals 6, we have -12 = k(6). Solve this for k by dividing both sides by 6:

k = -12/6 => k = -2

Then the "direct variation equation" here is y = -2x.

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3 years ago

Need help with number 2 please help. Due today!!

Blababa [14]

Answer:

Radius = 9

Step-by-step explanation:

Circumference = 2πr

2πr = 18 ×3.14

2πr = 56.5

6.28r = 56.5

r = 56.5/6.28

r = 9.04 round off , 9

3 0

3 years ago

Estamate 75% of 4,023

chubhunter [2.5K]

4023/x=100/75
(4023/x)*x=(100/75)*x
4023=1.3333333333333*x
x=4023/1.3333333333333
x=3017.25

8 0

3 years ago

To become a member at a local nature preserve, applicants must pay an initiation fee of $100 plus their yearly membership dues ,

Natalija [7]

The points are (2,150), (4,200).

The slope of the line joining the points is,

$\begin{gathered} m=\frac{200-150}{4-2} \\ =25 \end{gathered}$

Thus, the slope represents the increse in cost per year of membership.

5 0

1 year ago