NEED HELP WITH A MATH QUESTION

Mathematics

2 answers:

AURORKA [14]3 years ago

7 0

Answer:

h=10m

Step-by-step explanation:

let the angle at bottom left corner be x

tan x= 18.2/12

x=56.602(5sf) (i used degree

h=12sin56.602

=10.018m(5sf)

BabaBlast [244]3 years ago

4 0

Answer:

h = 10.018 ≈ 10 m

Step-by-step explanation:

Because this triangle is right, there are two ways to get base*height (the area); <em>the two legs, or the hypotenuse and the altitude it is connected to</em>. And those areas will be equal.

Therefore, <em>12 m * 18.2 m = 21.8 m * h</em>.

Multiply: 218.4 = 21.8h

Divide: h = 10.018 ≈ 10 m

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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: