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2 years ago

A and B are independent events. P(A) = 0.40 P(B) = 0.20 What is P(A/B)

Mathematics

1 answer:

Lelu [443]2 years ago

5 0

Answer:

P(A/B)= P(2)

Step-by-step explanation:

You plug in P(A) and P(B) in P(A/B). P(.40/.20) then you solve. 40 divided by 20 is 2, you do not need to do .40 divided by .20 because you will get the same answer as doing 40 divided by 20.

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2 years ago

In 2012 your car was worth $10,000. In 2014 your car was worth $8,850. Suppose the value of your car decreased at a constant rat

monitta

Answer:

The function to determine the value of your car (in dollars) in terms of the number of years t since 2012 is:

$f(t) = 10000(0.9407)^t$

Step-by-step explanation:

Value of the car:

Constant rate of change, so the value of the car in t years after 2012 is given by:

$f(t) = f(0)(1-r)^t$

In which f(0) is the initial value and r is the decay rate, as a decimal.

In 2012 your car was worth $10,000.

This means that $f(0) = 10000$ , thus:

$f(t) = 10000(1-r)^t$

2014 your car was worth $8,850.

2014 - 2012 = 2, so:

$f(2) = 8850$

We use this to find 1 - r.

$f(t) = 10000(1-r)^t$

$8850 = 10000(1-r)^2$

$(1-r)^2 = \frac{8850}{10000}$

$(1-r)^2 = 0.885$

$\sqrt{(1-r)^2} = \sqrt{0.885}$

$1 - r = 0.9407$

Thus

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2 years ago

If Claire earns $75 the next week from babysitting and deposits it in her account, what will her balance be then?

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2 years ago

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Step-by-step explanation:

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2 years ago

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The store bought the bike at a wholesale price. The bike store marked up the wholesale cost of the bike by 60%. What was the who

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Answer: The wholesale cost of the bike = $100

Step-by-step explanation:

Let x = wholesale cost of the bike

As per given,

Selling price = cost price + (Mark up percent) x ( cost price) (i)

Selling price of bike = $160

Mark up percent = 60% =0.60

Substitute values in (i) , we get

$160= x+0.6x\\\\\Rightarrow\ 160=1.6x\\\\\Rightarrow\ x=\dfrac{160}{1.6}\\\\\Rightarrow\ x= 100$

Hence, the wholesale cost of the bike = $100

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2 years ago