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aksik [14]
3 years ago
10

The probability that a train is late is 0.15 . write down the probability that the train is not late

Mathematics
1 answer:
jolli1 [7]3 years ago
6 0

The probability that a train is not late is 0.85

<h3>Probabilities</h3>

Probabilities are used to determine the chances of events.

The probability that a train is late is given as:

p = 0.15

<h3 /><h3>Complement rule</h3>

The probability that a train is not late is calculated using the following complement rule

q=1 - p

Substitute 0.15 for p

q=1 - 0.15

q=0.85

Hence, the probability that a train is not late is 0.85

Read more about probabilities at:

brainly.com/question/15246027

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Alonzo invested his savings in two investment funds. The amount he invested in Fund A was $2000 less than the amount he invested
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Answer:

There were $13,200 in Fund B.

Step-by-step explanation:

We are given the following in the question:

Let x be the amount in Fund A and y be the amount in Fund B.

The amount he invested in Fund A was 2000$ less than the amount he invested in Fund B.

Thus, we can write the equation:

x = y -2000

Profit percent on Fund A = 7%

Profit percent on Fund B = 8%

Total profit = $1960

Thus, we can write the equation:

7\%(x) + 8\%(y) = 1960\\7x + 8y = 196000

Solving the two equations by substitution, we get,

7(y-2000) + 8y = 196000\\\Rightarrow 15y = 198000\\\Rightarrow y = 13200\\\Rightarrow x = 11200

Thus, there were $13,200 in Fund B.

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