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Trava [24]
3 years ago
12

A botanist created a linear model to predict plant height from soil acidity (pH level) for a certain type of plant. The slope of

the model was 2.5 centimeters per pH level, the standard deviation of the sample of plant heights
was 4 centimeters, and the standard deviation of the soil acidities was 1 pH level. What is the value of the correlation coefficient?
A
0.015
(B) 0.10
c. .25
d. 0.625
E
1.60​
Mathematics
1 answer:
Igoryamba3 years ago
5 0

Answer:

The answer is D. 0.625

Step-by-step explanation:

2.5=r(4/1)

You might be interested in
What is the height of a cylinder with a volume of 1205.76 cubic inches and a radius of 8 inches? Round to the nearest tenth of a
Anit [1.1K]
Cylinder height = volume / PI * radius^2
cylinder height =1,205.76 / PI * 8^2
cylinder height = <span> <span> <span> 5.9969582557 </span> </span> </span>
which I guess can be safely rounded to 6 inches
Source www.1728.com.diamform.htm


3 0
3 years ago
The ball game sold $1,340 in tickets one Saturday. The number of $12 adult tickets was 15 more than twice the number of $5 child
7nadin3 [17]

Answer: 95 adult tickets and 40 child tickets were sold.

Step-by-step explanation:

Let x represent the number of adult tickets that were sold.

Let y represent the number of child tickets that were sold.

The cost of an adult ticket is $12 and the cost of a child ticket is $5.

The ball game sold $1,340 in tickets one Saturday. It means that

12x + 5y = 1340- - - - - - - - - - 1

The number of $12 adult tickets was 15 more than twice the number of $5 child tickets. It means that

x = 2y + 15

Substituting x = 2y + 15 into equation 1, it becomes

12(2y + 15) + 5y = 1340

24y + 180 + 5y = 1340

24y + 5y = 1340 - 180

29y = 1160

y = 1160/29

y = 40

x = 2y + 15 = 2 × 40 + 15

x = 95

5 0
4 years ago
A bakery must pay the state 8% sales tax on this week's total sales of $2,050. How much sales tax will the bakery pay to the sta
Reil [10]
164.00 is your answer

Hope it helps!

Please mark Brainliest if possible I’m just one away, thanks if you can
8 0
3 years ago
The total area of Canada is 9 984 670 km2. Calculate the side length of a square with the same area. Show your work.
Korolek [52]

Answer:

3159.853 km

Step-by-step explanation:

The question says a square has an area of 9,984,670 km^2, which means that all sides are the same length. So you can use the equation:

9984670 = (x)(x) which rearranges to 998470 = x^2

get the square root and you get:

x = 3159.853 km

8 0
3 years ago
Red ribbons are wrapped around all the columns of a building. Each ribbon does not overlap itself. Each column has a radius of 3
Roman55 [17]

Hello!

If this long ribbon measures 144\pi feet, you can see, it was only multiplied by one number, which has the be the diameter of a column to get our circumference. If we divide this by our diameter 6 (diameter is double the radius, 3), we get our answer below.

144/6=24

Therefore, our answer is C) 24.

I hope this helps!

5 0
3 years ago
Read 2 more answers
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