Correct? ...Which quadratic regression equation best fits the data set?
1 answer:
1) The second selection looks correct, as it is the only one with a minimum at a positive x value, and a y-intercept more than 109.
2) Your choice cannot be correct, as it corresponds to a function with a minimum near x = 1.278/(2*0.056) ≈ 11.4. The function is obviously decreasing at that point, so is not a minimum there. My calculator shows the 4th selection is best.
2) Your choice cannot be correct, as it corresponds to a function with a minimum near x = 1.278/(2*0.056) ≈ 11.4. The function is obviously decreasing at that point, so is not a minimum there. My calculator shows the 4th selection is best.
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Answer: A. 0.874387438743.. is a rational number.
Step-by-step explanation:
Since Any number that can be written in fraction form is a rational number if it can be in the form of p/q where p and q are integers and q≠0
Since we can write 0.874387438743... =
Where, 8743 and 9999 are integers and 9999≠0
Thus, 0.874387438743... is a rational number.
But, 0.0000100020003... , 5.891420975..... and 10.07401259... can not be written in the form of p/q therefore they are not the rational number.
Therefore, Only Option A is correct.
Let the smaller number be x.
Let the bigger number be y.
Rearrange equation (2):
Sub (2) into (1):
Sub x = 1 into (2):
Answer: The two numbers are 1 and 9.
Let the bigger number be y.
Rearrange equation (2):
Sub (2) into (1):
Sub x = 1 into (2):
Answer: The two numbers are 1 and 9.