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3 years ago

Last Question...Please help if you can...(25 points if you answer this)

Mathematics

1 answer:

tresset_1 [31]3 years ago

5 0

Answer:

Annie- 17 hours, Brian- 3 hours

Step-by-step explanation:

Let the number of hours Annie travelled be a, and same of Brian be b

Then we have

a + b = 20
a = 5b + 2

Substituting a in the first equation

5b + 2 + b = 20
6b = 20 - 2
6b = 18
b = 3

Then finding a

a = 20 - 3 = 17

So the answer is:

Annie- 17 hours, Brian- 3 hours

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Answer:

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See explanation below.

Step-by-step explanation:

For this case we define first some notation:

A= A new training program will increase customer satisfaction ratings

B= The training program can be kept within the original budget allocation

And for these two events we have defined the following probabilities

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$P(B' \cup A')$

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$(A \cap B)' = A' \cup B'$

So then we can write the probability like this:

$P(B' \cup A') = P((A \cap B)')$

And using the complement rule we can do this:

$P(B' \cup A') = P((A \cap B)')= 1-P(A \cap B)$

Since A and B are independent we have:

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