Plz help i have been asking this question for too long
1 answer:
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It's asking how far horizontally from the starting point which means that y, the height in meters is 0.
set 0 = -0.06x^2 + 10.1x + 5 and solve for x using the quadratic formula
-b +-
/ 2a
-10.1 +-
/ 2(-0.06)
you get that x = 168.83 m and -0.49 meters. Since the horizontal distance cant be negative, 168.83m is your answer
set 0 = -0.06x^2 + 10.1x + 5 and solve for x using the quadratic formula
-b +-
-10.1 +-
you get that x = 168.83 m and -0.49 meters. Since the horizontal distance cant be negative, 168.83m is your answer
Answer:
a)
We can multiply both sides by 3 and we got:
And if we replace we got:
X 1 2 3
P(X) 0.383 0.367 0.25
b)
c) X 1 2 3
F(X) 0.383 0.367+0.383=0.75 0.25+0.75 = 1
Step-by-step explanation:
For this case we have the following probability mass function given:
X 1 2 3
P(X) (1+3k)/3 (1+2k)/3 (0.5+5k)/3
Part a
In order to satisfy the definition of probability distribution the sum of all the probabilities needs to be 1 and each of the individual probabilities needs to be higher or equal than 0, using this we can do that:
We can multiply both sides by 3 and we got:
And if we replace we got:
X 1 2 3
P(X) 0.383 0.367 0.25
And we satisfy all the conditions.
Part b
For this case we can find the mean using this formula:
For the variance we need to find the second moment first like this:
And we can find the variance with this formula:
Part c
The cumulative distribution on this case is given by:
X 1 2 3
F(X) 0.383 0.367+0.383=0.75 0.25+0.75 = 1