A construction crew has just finished building a road. The crew worked for 10 days. If they built 314 kilometers of road each da
2 answers:
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Answer:
Step-by-step explanation:
1) -5 +3 = -2
When two numbers are in different sign, subtract and the result will have the bigger numbers sign. The bigger number is 5. so the result is (-2)
2) -7 - 2 = -9
When two numbers have same sign, add and the result will have the common sign
3) 122 * (-9) = - 1098
4) -6 ÷ (3/4)
= -8
The value for r = - 0.8535 , there is strong correlation between the variables.
<h3>What is a correlation coefficient ?</h3>Correlation coefficient describes the relationship between the two variables in the data .
The data given is
(1, 7), (2, 5), (3, -1), (4, 3), (5, -5)
Assuming Linear Regression ,
The data is plotted on the graphing calculator
The value for r = - 0.8535
as the value is in the range of - .85 to -1 , therefore there is strong correlation between the variables.
To know more about Correlation Coefficient
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Answer:
In 2050 fish population is 27000
Step-by-step explanation:
Exponential change can be modeled by,
Where is the initial value of 750,
is the rate of change. It is greater then 1 when there is growth and less then 1 when there is decay. and
is the number of time periods.
The rate of change in percentage is 8.3%
That means, after 1 year fish will become 108.3 for 100 fish.
Then
Difference of years is,
Then,
So, the fish population in 2050 is 27000