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ASHA 777 [7]
3 years ago
15

Bob has a set of 10 colored markers in a backpack. One is yellow and one is blue. What is the probability Bob will reach into th

e backpack without looking and grab the yellow marker and then reach in a second time and grab the blue marker?
Mathematics
2 answers:
azamat3 years ago
6 0

Answer:

<h2>The probability is 1%, really low.</h2>

Step-by-step explanation:

We know that there are 10 colored markers, and one of them is yellow, and another one of them is blue.

So, the probability of each one is

P_{yellow}=\frac{1}{10}\\P_{blue}=\frac{1}{10}

Now, let's assume that once you take a marker, you won't return it back in the backpack, this means the total number of elements is variable.

So, the probability of getting the yellow one and the blue one in to attempts is

P=\frac{1}{10}\frac{1}{9}=\frac{1}{90} =0.01 (or \ 1\%)

Observe that the second propability changes, that's because one you take out one marker, you won't place it back, so the total number of markers in the second attempt is nine.

Therefore, the probability is 1%, really low.

11111nata11111 [884]3 years ago
3 0
4/8 because if 2 already got pulled theres only 8 left four blue four yellow theres a 4 out od 8 chance youll pull them like that again

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The string of a kite is 100 meters long and it makes an angle of 60° with the ground. What is the height of the kite?
Naddika [18.5K]

Answer:

  50√3 ≈ 86.6 m

Step-by-step explanation:

The geometry can be modeled by a right triangle with the height of the kite being the leg opposite the 60° angle. The hypotenuse has the given length of 100 m.

The mnemonic SOH CAH TOA reminds you that the relation between angles and the sides of interest here is ...

  Sin = Opposite/Hypotenuse

  sin(60°) = (kite height)/(100 m)

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Step-by-step explanation:

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astraxan [27]
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lisabon 2012 [21]

Answer:

1) -2

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Step-by-step explanation:

1) 10x+8=3(x-2)

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