You are told that a 95% confidence interval for a population proportion is (0.3775, 0.6225) What was the sample proportion that
1 answer:
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Answer:
- 2 seconds to maximum height
- 20 meters maximum height
- 4 seconds to reach the ground
Step-by-step explanation:
The function can be graphed using a graphing calculator, geometry app, or spreadsheet. One such graph is attached. Often, these tools are capable of identifying extrema and intercepts.
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<h3>extreme</h3>The vertex of the graph is reported as (x, y) = (2, 20). This means the maximum height is reached after 2 seconds. That maximum height is 20 meters.
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<h3>intercept</h3>The drop is launched from ground level at x = 0 seconds. It returns to ground level at x = 4 seconds.
Answer:
I suspect it can = 0 when the roots are solved for.
x = 10.44 which is the only positive root. There is another one, but I think it gives a minus number for the white area.
Step-by-step explanation:
There are two areas that are possible given the dimensions of the two rectangles. The trick is to find both of them. and compare.
Step One
Find the area of the inside rectangle (unshaded area)
Area = (2x - 1)*x Use the distributive property to find the area
Area = 2x^2 - x
Step Two
Find the area of the outside of the frame
Area = (x + 5)(x + 3) Remove the brackets using FOIL
Area = x^2 + 5x + 3x + 15
Area = x^2 + 8x + 15
Step Three
Find the area of the shaded region
Area shaded = x^2 + 8x + 15 – (2x^2 – x) Remove the brackets
Area shaded = x^2 + 8x + 15 – 2x^2 + x Combine like terms
Area shaded = x^2 + 9x + 15 - 2x^2
Area shaded = -x^2 + 9x + 15
Step Four
Find the roots of the quadratic.
a = -1
b = 9
c = 15
Using the quadratic formula, and substituting for a b and c, we get
There is only 1 value that works for this problem and that is when x = 10.44
