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kondor19780726 [428]
3 years ago
5

The table shows a proportional relationship.

Mathematics
1 answer:
sergey [27]3 years ago
4 0

.8 is the answer you add .8 to x

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Ruby has a bird feeder which is visited by an average of 13 birds every 2 hours during daylight hours. What is the probability t
zalisa [80]

Answer:

62.93%

Step-by-step explanation:

We have to solve it by a Poisson distribution, where:

p (x = n) = e ^ (- l) * l ^ (x) / x!

Where he would come being the number of birds that there would be in 40 minutes, we know that in 2 hours, that is 120 minutes there are 13, therefore in 40 there would be:

l = 13 * 40/120

l = 4,333

Now, we have p (x> 3) and that is equal to:

p (x> 3) = 1 - p (x <= 3)

So, we calculate the probability from 0 to 3:

 p (x = 0) = 2.72 ^ (- 4.33) * 4.33 ^ (0) / 0! = 0.01313

p (x = 1) = 2.72 ^ (- 4.33) * 4.33 ^ (1) / 1! = 0.0568

p (x = 2) = 2.72 ^ (- 4.33) * 4.33 ^ (2) / 2! = 0.12310

p (x = 3) = 2.72 ^ (- 4.33) * 4.33 ^ (3) / 3! = 0.17767

If we add each one:

0.01313 + 0.0568 + 0.12310 + 0.17767 = 0.3707

replacing:

p (x> 3) = 1 - 0.3707

p (x> 3) = 0.6293

Which means that the probability is 62.93%

5 0
3 years ago
Rewrite 4 6/7 as an improper fraction.<br><br> sorry this is the correct question
goblinko [34]
The correct answer is, obviously, 34/7.
8 0
3 years ago
Read 2 more answers
Write the function of this graph​
Colt1911 [192]

Answer:

f(x) = -3/7x - 6

Step-by-step explanation:

5 0
3 years ago
Scheels received a shipment of 400 water bottles. 30% were yellow.
Amanda [17]
Answer:
There were 120 yellow water bottles in the shipment

Explanation:
Multiply 400 by 30% to find out how many water bottles came in yellow.

400 • .30 = 120

So, 120 were yellow.
6 0
3 years ago
Read 2 more answers
Jack uses a probability simulator to roll a six-sided number cube 100 times and to flip a coin 100 times. The results of the exp
Mandarinka [93]

The experimental probability is the number of specific outcomes divided by the sample size...


P(6)=27/100  (27%)


P(H)=41/100  (41%)


Not sure, but if you meant rolling a 6 AND getting a head then:


P(6 AND H)=(27/100)(41/100)=1107/10000  (11.07%)




5 0
3 years ago
Read 2 more answers
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