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Vinil7 [7]
3 years ago
14

Type the correct answer in each box. If necessary, use / for the fraction bar. A bag contains 5 blue marbles, 2 black marbles, a

nd 3 red marbles. A marble is randomly drawn from the bag. The probability of not drawing a black marble is ? The probability of drawing a red marble is ?
Mathematics
1 answer:
serg [7]3 years ago
7 0

Answer:

P (not drawing a black marble) =  4/5

P (red marble) = 3/10

Step-by-step explanation:

The total number of marbles is

5 blue marbles +2 black marbles+ 3 red marbles = 10 marbles

P (not drawing a black marble) =

The marbles that are not black/ total marbles

(blue + red)/ total

(5+3)/10

8/10

4/5

P (red marble) =   red marble/ total

                         = 3/10

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Can it be concluded that if there is a 50% chance of contracting a communicable disease through contact with an infected person,
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Answer:

No it cannot be concluded.

Step-by-step explanation:

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The probability of getting the disease in the second attempt is 50%

Thus the probability of getting the disease in either of the turns is 50%+50%=100% (which may seem to be true)

BUT

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The probability of not getting the disease in the second attempt is 50%

Thus the probability of not getting the disease in either of the turns is 50%+50%=100% (which is also true for this case)

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4 0
3 years ago
Z-6=15 what does z equal
zmey [24]

Answer:

z = 21

Step-by-step explanation:

z-6=15

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hope it helps!

5 0
3 years ago
Read 2 more answers
Please help with steps, will give brainliest. Simplify
kumpel [21]

Answer:

=53*(54 ×^9 y^12 z^15)^1/2

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4 0
3 years ago
Please everything that I put on this app no one has answered I’m just wasting points now
zloy xaker [14]

Answer:

QR=18

Step-by-step explanation:

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3 years ago
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