Answer:
Step-by-step explanation:
The scatter plot is a plot of amount spent on entertainment(in dollars) against the number of hours worked. The equation of the line of best fit is given as
y = 0.6x + 21.82
This equation gives the predicted amount spent on entertainment while the table gives the exact amount spent on entertainment.
1) when the number of hours worked is 7.8,
The observed amount is $33.50
The predicted amount is y = 0.6 × 7.8 + 21.82 = $26.5
The residual is 33.5 - 26.5 = $7
2) when the number of hours worked is 10.2,
The observed amount is $21.5
Approximately 22
The predicted amount is y = 0.6 × 10.2 + 21.82 = $27.94
Approximately $28
The residual is 22 - 28 = $6
Answer:
one value of x would be x=5/2 and x=3/2
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given equation of line is:
2x-3y=13
We will convert the equation of line in point-slope form to find the slope of the line
Let
m_1 be the slope of the line
So,
2x-3y=13
-3y= -2x+13
Dividing both sides by -3
(-3y)/(-3)=(-2x)/(-3)+13/(-3)
y=(2/3)x-13/3
The co-efficient of x is the slope of the line.
So,
m_1=2/3
Let
m_2 be the slope of second line
As we know that product of slopes of two perpendicular line is -1
m_1 m_2= -1
2/3*m_2= -1
m_2= -1*3/2
m_2= -3/2
So m2 is the slope of the line perpendicular to given line.
The standard equation of a line is
y=mx+b
To find the equation of line through (-6,5), put the point and slope in the given form and solve for b
5= -3/2 (-6)+b
5=18/2+b
5=9+b
b=5-9
b= -4
Putting the values of slope and b, we get
Question 1132387: How many liters of a 10% solution should be mixed with 60L of 25% solution to get 15% solution? = one click in Excel = 120. ANSWER. 120 liters of the 10% solution.
1575/15 = 105 teachers there