Easily you can try each formula with x=-2
because we know f(-2)=-1
So ,in this way D is correct Only!!
Answer:
Step-by-step explanation:
The given data table is
Number of seconds : 0 1 2
Height (in feet) : 11 13 13
We need to find quadratic regression equation that fits these data.
The general form of quadratic regression equation is
.... (1)
Using the graphing calculator we get
a = -1 , b = 3 and c=11
Substitute these values in equation (1), to find the quadratic regression equation that fits these data.
Therefore, the quadratic regression equation that fits the data is .
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Answer:
38
Step-by-step explanation:
(72-51)+(26-9)
21+17
38
Step-by-step explanation:
To prove that:
Let us take left hand side and prove it.
Using the trigonometric identity:
Using the trigonometric identity:
Cancel the common term 2 sin A on both numerator and denominator.
Using the trigonometric identity:
= tan A
= RHS
Hence proved.