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Alexandra [31]
3 years ago
11

The height in meters of a football that is kicked from the ground is approximated by f(x)=-5x^2 +20x, where x is the time in sec

onds after the ball is kicked. Find the ball's maximum height and the time it takes the ball to reach this height. Then find how long the bal is in the air
Mathematics
2 answers:
Mrrafil [7]3 years ago
8 0
What’s the answer in Spanish
zlopas [31]3 years ago
6 0

Answer:

no se estoy en la misma

Step-by-step explanation:

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PLEASE HELP QUICKK!
PilotLPTM [1.2K]

Answer:

i really dont know

Step-by-step explanation:

i really dont know

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3 years ago
A radio telescope has a parabolic surface. If it is 1m deep and 16m wide how far is the focus from the vertex?
Mrac [35]
Basing on the description, a parabola opening up with vertex at origin, the formula with vertex at origin is used, x^2 = 4py. p is the focus and so with the dimensions given, we obtain a 0.25 and that is the distance of the focus to the vertex.
6 0
3 years ago
What’s the answer please??
zhenek [66]

Answer:

your answer will be x=1.13504161

8 0
3 years ago
Read 2 more answers
I believe the answer is A but im not sure , can someone check my answer?
hichkok12 [17]

Answer:

yes it's (A)

Step-by-step explanation:

Its A because you aways have to add the one under the (N) and add (1) and multiple them and you got your answee

4 0
3 years ago
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Explain how counting number of girls in five children family can be treated as a binomial experiment. What assumptions are neces
Juliette [100K]

This is a binomial experiment and you'll use the binomial probability distribution because:

  1. There are two choices for each birth. Either you get a girl or you get a boy. So there are two outcomes to each trial. This is where the "bi" comes from in "binomial" (bi means 2).
  2. Each birth is independent of any other birth. The probability of getting a girl is the same for each trial. In this case, the probability is p = 1/2 = 0.5 = 50%
  3. There are fixed number of trials. In this case, there are 5 births so n = 5 is the number of trials.

Since all of those conditions above are met, this means we have a binomial experiment.

Some textbooks may split up item #2 into two parts, but I chose to place them together since they are similar ideas.

8 0
4 years ago
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