Use the graphing calculator tool to plot the residualpoints. (1, 0.86), (2, -0.25), (3, -1.66), (4, -2.34), (5,-4.1)
Does the residual plot show that the line of best fit is
appropriate for the data?
A. Yes, the points have no pattern.
B. Yes, the points are evenly distributed about the x-axis.
C.No the points are in a linear pattern.
D.No, the points are in a curved pattern.
Answers
Answer: it’s option C: No, the points are in a linear pattern
Step-by-step explanation:
Took on edge
Final answer:
To determine if the line of best fit is appropriate for the data, plot the residuals on a graph and examine the pattern. In this case, the residual plot does not show a linear or curved pattern, indicating that the line of best fit is not appropriate for the data.
Explanation:
The residual plot shows the difference between the observed Y-values and the predicted Y-values. To plot the residuals, subtract the predicted Y-values from the observed Y-values for each corresponding X-value. Then plot the resulting points on a graph. In this case, the points are:
(1, 0.86), (2, -0.25), (3, -1.66), (4, -2.34), (5,-4.1).
To determine if the line of best fit is appropriate for the data, we need to examine the pattern of the residual plot. If the points have no pattern or are evenly distributed about the x-axis, it indicates that the line of best fit is appropriate. In this case, the points do not exhibit a linear or curved pattern, and they are not evenly distributed about the x-axis. Therefore, the residual plot does not show that the line of best fit is appropriate for the data.
Hence, the correct answer is: C. No the points are in a linear pattern.
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Answers
2(x-3)5x = 60
2x -6 x 5x = 60
2x -30x = 60
-28x = 60
28x = -60
x = -15/7
Not sure if I'm correct, but hope it helped
Equation B: 2x + 4z = 1
Which of the following is a possible step used in eliminating the z-term?
Multiply equation B by 4.
Multiply equation A by 2.
Multiply equation A by –4.
Multiply equation B by 2.
Answers
Multiply equation A by –4.
=>-4x-4z=-24
2x+4z=1
------------------
-2x=-23
x=23/2
Answer:
To eliminate the z-term, you need to multiply equation A by -4.
Step-by-step explanation:
Answers
Answers
Answer:
Warning:
I think that these are correct, but don't make this your official source :)
7. B
8. D
9. B
I hope this helps :)
Answers
Answer:
Redwood: $3.50 per foot
Pine: $1.10 per foot
Step-by-step explanation:
The manner that should be approach is by using the substitution method.
Therefore using the information from the question:
50 ft of redwood and 90 ft of pine give a total cost of $274
So we use this information and make a equation using x and y, in this case redwood would be x and pine would be y.
We do this for the second purchase also...
Now, we have two equations that are perfect for the usage of the substitution method.
Using one equation, in this case the top one, we must solve for either x or y (in this case we solved for y)
Using this equation from above we insert this into the other equation that deals with the second purchase and solve for x now.
This is the cost of redwood so now we use this answer and plug it in either equation in order to get the cost of pine (y).
So therefore you get the two costs by using the substitution method!
~~~~Best!!!
Answers
Answer:
g = 5
Step-by-step explanation:
Step 1: Write out equation
8g + 10 = 35 + 3g
Step 2: Subtract 3g on both sides
5g + 10 = 35
Step 3: Subtract 10 on both sides
5g = 25
Step 4: Divide both sides by 5
g = 5