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stich3 [128]
3 years ago
14

The table below shows the surface area y, in square feet, of a shrinking lake in x days:

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
6 0
Based on the data, the most likely correlation coefficient would be -1.
The slope between 20 and 30 days is -1, and it represents the change in the surface area of the lake per day.
The data represents correlation, not causation.

Since the data would form a perfectly straight line through the points, the correlation coefficient would be -1 for a perfect decreasing fit.
To find the slope, find the change in the surface area between those days, the change in the days, and write it as surface area/days:  80-90=-10; 30-20=10; -10/10=-1
This is not causation because there could be lurking variables we cannot see.
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Andrews [41]
1/5 cup = 47 ml & 1 cup = 237 ml
237 * 5 = 1185
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Answer is 25.2 1/5 cups are in 5 cups.
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3 years ago
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Angelina has a collection of Nickles and dimes worth 4.65 . If she has 70 nickles and dimes , how many of each does she have ?
Mila [183]
System of equations (yay) x=nickels y=dimes
1st  x+y=70
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3 years ago
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Sergio039 [100]

Answer:

Option C is correct

Step-by-step explanation:

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3 years ago
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Galina-37 [17]

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Answer:

Step-by-step explanation:

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