Ask question

Ask question

All categories

2 years ago

7

454 / 762 = ?

2 answers:

Maslowich2 years ago

6 0

Answer:

huh-

Step-by-step explanation:

Tresset [83]2 years ago

4 0

Ok this is supposed to be about school work stuff not stuff about anime

You might be interested in

How many lines of symmetry does the figure below have? if there are no lines of symmetry, choose none.

frosja888 [35]

A Pentagon has 5 lines of symmetry

7 0

4 years ago

Break a part the array to show 8×6=(4×6)+(4×6)

Maksim231197 [3]

8×6= 48
4×6=24, 24+24=48

or

(4×6)+(4×6)=2×4×6=8×6

6 0

3 years ago

Please help me Question 3 of 5

umka21 [38]

Answer:

46

Step-by-step explanation:

8 0

3 years ago

There are three power plants [X, Y, Z] that at any given time each one either generates electricity or idles. Event A is that pl

insens350 [35]

We're told that

$P(A\cap B)=0.15$

$P(A\cup B)^C=0.06\implies P(A\cup B)=0.94$

$P(B\mid A)=P(B^C\mid A)=0.5$

where the last fact is due to the law of total probability:

$P(A)=P(A\cap B)+P(A\cap B^C)$

$\implies P(A)=P(B\mid A)P(A)+P(B^C\mid A)P(A)$

$\implies 1=P(B\mid A)+P(B^C\mid A)$

so that $B\mid A$ and $B^C\mid A$ are complementary.

By definition of conditional probability, we have

$P(B\mid A)=P(B^C\mid A)$

$\implies\dfrac{P(A\cap B)}{P(A)}=\dfrac{P(A\cap B^C)}{P(A)}$

$\implies P(A\cap B)=P(A\cap B^C)$

We make use of the addition rule and complementary probabilities to rewrite this as

$P(A\cap B)=P(A\cap B^C)$

$\implies P(A)+P(B)-P(A\cup B)=P(A)+P(B^C)-P(A\cup B^C)$

$\implies P(B)-[1-P(A\cup B)^C]=[1-P(B)]-P(A\cup B^C)$

$\implies2P(B)=2-[P(A\cup B)^C+P(A\cup B^C)]$

$\implies2P(B)=[1-P(A\cup B)^C]+[1-P(A\cup B^C)]$

$\implies2P(B)=P(A\cup B)+P(A\cup B^C)^C$

$\implies2P(B)=P(A\cup B)+P(A^C\cap B)\quad(*)$

By the law of total probability,

$P(B)=P(A\cap B)+P(A^C\cap B)$

$\implies P(A^C\cap B)=P(B)-P(A\cap B)$

and substituting this into $(*)$ gives

$2P(B)=P(A\cup B)+[P(B)-P(A\cap B)]$

$\implies P(B)=P(A\cup B)-P(A\cap B)$

$\implies P(B)=0.94-0.15=\boxed{0.79}$

8 0

3 years ago

PLS HELP ASAPPP I WILL GIVE BRAINLIEST

FrozenT [24]

Answer:

Yes, it is.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers