3 years ago

Please help me please I really need help please

Mathematics

1 answer:

vichka [17]3 years ago

4 0

Answer:

See attached

Step-by-step explanation:

Solution is in the attached picture

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Select the equivalent expression

brilliants [131]

Answer:

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3 years ago

HELP ME PLEEEEASEEE!!!!!!!!!!!!!!!!!!!!!!!

anygoal [31]

9. b< -6
10. n>7
11. x< -1
12. d> 4
13. m> 4
14. x< 3
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3 years ago

Read 2 more answers

Please helpppp it has to do with P(A U B)

Katyanochek1 [597]

$P(A)=0.5$ , $P(B)=0.6$ , $P(A\cup B)=0.8$

We find the probability of intersection using the inclusion/exclusion principle:

$P(A\cap B)=P(A)+P(B)-P(A\cup B)=0.3$

By definition of conditional probability,

$P(A\mid B)=\dfrac{P(A\cap B)}{P(B)}=\dfrac{0.3}{0.6}=0.5$

For $A$ and $B$ to be independent, we must have

$P(A\cap B)=P(A)\cdot P(B)$

in which case we have $0.3=0.5\cdot0.6$ , which is true, so $A$ and $B$ are indeed independent.

Or, to establish independence another way, in terms of conditional probability, we must have

$P(A\mid B)\cdot P(B)=P(A)\cdot P(B)\implies P(A\mid B)=P(A)$

which is also true.

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3 years ago

The sum of two numbers is 18. The larger number is twice as large as the smaller number. What are the two numbers? Please explai

snow_tiger [21]

The two numbers are 12 and 16. 12 + 6 = 18. 6 doubled is 12. 12 plus 6 equals 18.

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3 years ago

An online media service offers video and music downloads. Each download of a song costs $1. Each download of a video cost 3 time

astraxan [27]

Since videos are 3 dollars since 1 times 3 is 3, 3 times 15 would be 45 dollars worth of videos. So you could purchase 45 songs after buying 15 videos.

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3 years ago