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Westkost [7]
2 years ago
12

A bag contains 8 gray glass marbles, 2 gray metal marbles, 4 black glass marbles, and 6 black metal marbles. If one marble is dr

awn at random, what is the probability that it is glass, given that it is one of the black marbles?
A. 1/5
B. 1/3
C. 2/5
D. 1/2
Mathematics
1 answer:
Vera_Pavlovna [14]2 years ago
4 0

Answer:

1/5

Step-by-step explanation:

Total marbles = 20

Black marbles = 10

(10/20) x (4/10)

= (1/2) x (2/5)

= 2/10

= 1/5

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In square ABCD, AC = 3(x+8) and BD = 7 +4x. Solve for X
svetoff [14.1K]

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2 years ago
An insurance company charges Ted E. Bear $1400 per year for insurance on his home. The company has predicted that there is a 10%
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Answer:

$900  

Step-by-step explanation:

The given parameters are;

The amount Ted pays per year for insurance on his home = $1,400

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The expected value is given as follows

Incidence                     Probability(p)        Value(v)                                   v × p

A claim is made            0.1                  $5,000 - $1,400 = -$3,600     -$360

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The value the insurance company can be expected to make on average on the policy is $900    

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