The statement which is true is the airplane reaches its maximum height of 81 feet in 12 seconds.
Since the height of the plane is a function given by a parabola, we need to know the equation of a parabola in vertex form
<h3>What is the equation of a parabola in vertex form?</h3>
The equation of a parabola with vertex (h,k) is given by y = a(x - h) + k
Since the height (in feet) of the airplane as a function of time (in seconds after the timer was started) is given by the equation h(t) = −(t − 12) + 81
- Since this is the equation of a parabola in vertex form, comparing h with y, we have that a = -1, h = 12 and k = 81
- Since a = -1 < 0 this implies that the point (h, k) = (12, 81) is a maximum point
So, the statement which is true is the airplane reaches its maximum height of 81 feet in 12 seconds.
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P(1 and 5 )
P(5 and 1)
P(4 and 2)
P(2 and 4)
P(3 and 3)
5x(1/6 x 1/6) = 0.14
Is there a question orrrr ... what is the objective ?
Answer: 19,11,17 and 13,22,14
Step-by-step explanation:
The two smallest numbers (11, 17) added together must be a bigger number than the biggest number (19)...... 11 + 17 = 28
28> 19 :)
By the definition, An observed value of \bar{x} to estimate the mean of population is a point estimate and the statistic \bar{x} is a poiont estimator.
It is given that, "Hen 430 randomly selected light bulbs were tested in a laboratory"
That is, the Random sample size n= 430
The statement given that, "224 lasted more than 500 hours"
So x=224
Now find a point estimate of the last more than 500 hours proportion of all light bulbs:
Thus
This implies that
Thus the answer is D: 0.521.