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Yanka [14]
3 years ago
12

For what value of n is 20 = {n+4? a) b) * c) 40 d) 60

Mathematics
2 answers:
Advocard [28]3 years ago
6 0
I think it might be 40 I’m not sure but good luck
kiruha [24]3 years ago
5 0
Answer: N= 16

Explanation: 20-4=16
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An unfair coin with​ Pr[H] = 0.2 is flipped. If the flip results in a​ head, a marble is selected at random from a urn containin
satela [25.4K]
Normally when dealing with coins the probability of getting heads or tails is 0.5 each. However in this case since its an unfair coin, the probability of getting heads is 0.2. 
H - head 
T - tails
R - red marble
pr (H) = 0.2
urn
6 red and 4 blue
pr (T)   = 0.8
urn
3 red and 5 blue

when heads is obtained 
red - 6/10 -0.6
blue - 4/10 - 0.4
therefore when multiplying with 0.2 probability of getting heads
pr (R ∩ H) red - 0.6*0.2 = 0.12

when tails is obtained 
red - 3/8 - 0.375
blue - 5/8 - 0.625
when multiplying with 0.8 probability of getting tails
pr (R ∩ T) red - 0.375 * 0.8 = 0.3

using bayes rule the answer can be found out, 
the following equation is used;
pr (H | R) = pr (R ∩ H) / {pr (R ∩ H) + pr (R ∩ T)}
               = 0.12 / (0.12 + 0.3)
               = 0.12 / 0.42
               = 0.286
the final answer is 0.286
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3 years ago
Which of the following answers is the value of x in this equivalent fraction?
Ira Lisetskai [31]
I just had the question and the correct answer is 36.
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Ok can some really help me on this.
Mkey [24]

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At a shelter 15%of the dogs are puppies. There are 60 dogs at the shelter. How many are puppies???? Will Mark BRAINLLEST
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Answer:

there are 9 puppies.

Step-by-step explanation:

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KATRIN_1 [288]

The total cost of the customers order is s/2 + 1.50 dollars.

<u>Explanation:</u>

Let s represent the cost of sandwich

Cost of pretzels = 1.50 dollars

Special offer by deli lunch = Half of the cost of sandwich + bag of pretxel

Cost of offer. =  s/2 + 1.50 dollars

Original order = 1 sandwich

Originial cost = s dollars

6 0
3 years ago
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