A scatter plot containing the point (5, 29) has the regression equation yˆ=5x+2 . What is the residual e when x = 5? Enter your
answer in the box.
e = ?
e = ?
2 answers:
Answer:
The residual e=2 when x = 5.
Step-by-step explanation:
A scatter plot containing the point (5, 29), it means the observed value at x=5 it 29.
The given regression equation is
Substitute x=5 in the above regression equation, to find the predicted value at x=-5.
The formula to find the residual value e is
e = Observed value - Predicted value
Therefore the residual e=2 when x = 5.
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Answer:
The price of a senior ticket is $12.
Step-by-step explanation:
Given:
Mr. Smith purchased 8 senior tickets and 5 child tickets for $136. Mr. Jackson purchased 4 senior tickets and 6 child tickets for $96.
Now, to get what is the price of a senior ticket.
Let the senior ticket be and the child ticket be
:
So, according to question
.........(1)
...........(2)
Now, we have system of equations:
Multiplying the equation (2) by -2 we get:
.......(3)
Now, adding the equation (3) and (1) the variables and the numbers:
Dividing both sides by -7 we get:
Putting the value of y in equation (2) we get:
On solving the equation we get:
.
Therefore, the price of a senior ticket is $12.
Answer:
BC = 30.73
Here,
so first solve for QD
- Hence, QD = 9
Now! <u>using Pythagoras theorem,</u>
- CD² + BD² = BC²
- 19.2² + (9+15)² = BC²
- BC = √368.64+576
- BC = 30.73499634
- BC = 30.73 ( rounded to nearest hundredth )