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slava [35]
4 years ago
14

Does anybody know how to do this?

Mathematics
1 answer:
s344n2d4d5 [400]4 years ago
8 0
I'm not sure what the question is.  It looks like some of it may have been cut off or there is information missing?
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What is the probability that A occurs qiven that B occurs ?
madreJ [45]
Dependent events

A and B are dependent events. This means that the outcome of B affects the outcome of A.

We have that "the probability that A occurs given that B occurs" is symbolized by

P(A|B)

This is what we want to find.

We have that:

P(A): probability that event A occurs.

P(A) = 1/4

P(B): probability that event B occurs.

P(B) = 8/9

P(A&B): probability that both events A and B occurs.

P(A&B) = 1/5

We have that:

\begin{gathered} P\mleft(A\&B\mright)=P\mleft(B\mright)\cdot P\mleft(A|B\mright) \\ \downarrow \\ \frac{P(A\&B)}{P(B)}=P(A|B) \end{gathered}

Replacing in the equation:

\begin{gathered} \frac{P(A\&B)}{P(B)}=P(A|B) \\ \downarrow\text{ since }P\mleft(A\&B\mright)=\frac{1}{5}\text{ and }P\mleft(B\mright)=\frac{8}{9} \\ \frac{\frac{1}{5}}{\frac{8}{9}}=P(A|B) \end{gathered}

Since,

\frac{\frac{1}{5}}{\frac{8}{9}}=\frac{1}{5}\cdot\frac{9}{8}=\frac{9}{40}

Then

P(A|B)=\frac{9}{40}<h2>Answer: 9/40</h2>

7 0
1 year ago
Kaltlin bought some books for $6 each and received a discount of $8 off of her total purchase. She spent $58 after the discount.
MrRissso [65]

Answer:

I might have bought about 9 books

4 0
3 years ago
Read 2 more answers
explain how to write and solve an equation to find an unknown side length of a rectangle when given the perimeter.
Trava [24]
A squared plus b squared = c squared will help
5 0
3 years ago
I need help with all the questions:)
quester [9]

The radical parts are gonna be easiest. You plug the radicals into your calculator and get a decimal. Next, you determine which decimal is greater. For turning fractions into decimals, change the fractions into improper fractions and divide the numerator by the denominator (the top number and the bottom number). You'll get a fraction then compare.

For the graphing area, you do the same thing, turn everything into decimals and place them on the graph.

Good luck!

3 0
3 years ago
Need help finding out what 3x=y and x-2y = 10
sweet-ann [11.9K]

Answer:

x=-2, y=-6

Step-by-step explanation:

Simple substitution.

Since y is isolated in one of the equations already, you can plug it into the second equation.

x - 2(3x) = 10

x - 6x = 10

-5x = 10

x = -2

Sub. x = -2 into 3x = y:

3(-2) = y

y = -6

4 0
3 years ago
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