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statuscvo [17]
3 years ago
14

Of the 8760 hours in a year one television was on for 876 hours what percent is this

Mathematics
1 answer:
sdas [7]3 years ago
8 0
8760/876= 10

it would be 10 percent
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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
6 0
3 years ago
(6th grade math assignment) I have a 16oz Smoothie with 4oz of blueberries and 12oz yogurt. What is the ratio?
rosijanka [135]
<span>4:12 or 1:3 
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4 0
3 years ago
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Bacteria entering the human body can cause infections and diseases. The human body must respond to fight the bacteria.
Masja [62]

Answer:

d looks like the best option. sorry if its isn't

7 0
3 years ago
Please help me, I do not know how to do this. I would appreciate it if you explained how you got your answer too…
Basile [38]

Answer:

45

Step-by-step explanation:

DISCLAMER  THIS IS ONLY FOR POINT THIS IS NOT THE RIGHT ASWEAR

8 0
2 years ago
Find the unit rate.<br><br> 3.75 pints out of every 5 gallons
Veronika [31]

Answer:

1 pints out of every 1.2 gallons.

Step-by-step explanation:

3.75/3.75 = 1

5/3.75 = 1.33 repeating

1 pints out of every 1.2 gallons.

7 0
3 years ago
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