D. 7/8
-BrainlyStudent1st
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Answer:
9 hours
Step-by-step explanation:
you divide the 715 miles by 13 hours then take the quotient of that (55) and divide the 495 miles by 55 which gets you to your answer, 9.
Answer:
a) From the chart crated with Microsoft Excel, we have that the correlation coefficient, r = √0.8581 ≈ 0.93 to the nearest hundredth
The steps used includes
1) Inputting the given data into the cells on a Microsoft Excel spread sheet
2) Highlighting and sorting the data in the cells in order of increasing Rainfall
3) Generating a dot plot using the sorted data from above
4) Adding the trend line, Square of the linear regression, and the trend line equation
5) Adding the axis labels
(b) The correlation coefficient states that there is a strong positive correlation between the monthly rainfall and and Umbrella sales
Step-by-step explanation:
Two variables are directly proportional, such that y/x=c,
and satisfying the equation y=ax+b.
y=ax+b is the general form of linear equations, where, y:= dependant variable,
x:= independent variable,
a:= the slope, and b:=y-intercept
x-intercept = -b/a