Answer:
The slope of the regression line is 0.0138
Step-by-step explanation:
The problem tells us that there is a linear relationship between the dive duration and the depth.
Linear equations have the form y = mx + b where m is the slope, y is the dependent variable and x is the independent variable.
In this problem we have that the depth is the independent variable, the dive duration is the dependent variable and the regression equation is DD = 2.69 + 0.0138D where DD is the dive duration and D is the depth. From the previous paragraph, we can observe that the slope is the coefficient of the dependent variable. Therefore, for this equation the slope is 0.0138.
Answer:
the download cost for a song is $1 and $11 for a movie
Step-by-step explanation:
According to the questions, the following equations are as follows:
Let us assume the song be x
And, the movies be y
So,
20x + 13y = $163.........(i)
13x + 13y = $156........(ii)
Now solve substract second equation from the first equation
7x = $7
x = $1
And the y value is
20 + 13y = $163
13y = $163 - $20
13y = $143
y = $11
Hence, the download cost for a song is $1 and $11 for a movie
Answer:
3 Minutes 42 Seconds
Step-by-step explanation:
Half of 7 minutes is 3 minutes and 30 seconds, half of 24 seconds is 12 seconds. If you add the halfed times together you get a total of 3 minutes 42 seconds.
I think that x^2-9 (difference of 2 squares), 216x^3 +729 (sum of 2 cubes), and the other two are none
Not entirely sure
Answer:
The answer is A,B,E
Step-by-step explanation:
Step by step