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3 years ago

If events A and B are independent, find P(A|B)

Mathematics

2 answers:

almond37 [142]3 years ago

5 0

Read the introductory paragraph and answer the question in complete sentences.

The community comes alive at night! Schools that once were dark in the evening are now alive with lights and people. The people are adults and the lights are on and the school buildings are open because adults are enrolled in community education classes.

What do you believe the subject will be?

saveliy_v [14]3 years ago

5 0

Answer:

the answers a on e2020

Step-by-step explanation:

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Answer with A B C D or #. Correct answer gets brainlest.

gladu [14]

Answer:

256

Step-by-step explanation:

4×4=16

16×4=64

64×4=256

8 0

3 years ago

Fiona is trying to prove that a pair of expressions are equivalent by using substitution. Which pair of expressions has the same

fiasKO [112]

Missing Part of the Question

3 (4 - y) -7 ; 5 + 3y

9 + y + 4y - 2 - 3y; -2y + 7

5 + y - 2 - 6y + y; 8y + 3

2y + 7 + y - 2 + y; 4y + 5

Answer:

2y + 7 + y - 2 + y; 4y + 5

Step-by-step explanation:

Given

y = 3

Required

Which pair of expression are equal

To get the pair of expression that are equal; we simply substitute 3 for y in each of the expressions

3 (4 - y) -7 and 5 + 3y

Substitute 3 for y in 3 (4 - y) -7

This gives 3(4 - 3) -7

= 3(1) - 7

= 3 - 7

= -4

Then Substitute 3 for y in 5 + 3y

This gives 5 + 3(3)

= 5 + 9

= 14

-4 and 14 are not equal

---------------------------------------------------------------------------------------

9 + y + 4y - 2 - 3y; -2y + 7

Substitute 3 for y in 9 + y + 4y - 2 - 3y

This gives 9 + 3 + 4(3) - 2 - 3(3)

= 9 + 3 + 12 - 2 - 9

= 13

Then Substitute 3 for y in -2y + 7

This gives -2(3) + 7

= -6 + 7

= 1

13 and 1 are not equal

---------------------------------------------------------------------------------------

5 + y - 2 - 6y + y; 8y + 3

Substitute 3 for y in 5 + y - 2 - 6y + y

This gives 5 + 3 - 2 - 6(3) + 3

= 5 + 3 - 2 - 18 + 3

= -9

Then Substitute 3 for y in 8y + 3

This gives 8(3) + 3

= 24 + 3

= 27

-9 and 27 are not equal

---------------------------------------------------------------------------------------

2y + 7 + y - 2 + y; 4y + 5

Substitute 3 for y in 2y + 7 + y - 2 + y

This gives 2(3) + 7 + 3 - 2 + 3

= 6 + 7 + 3 - 2 + 3

= 17

Then Substitute 3 for y in 4y + 5

This gives 4(3) + 5

= 12 + 5

= 17

17 and 17 are equal

Hence, Option D is correct

6 0

3 years ago

If x to the power of 2 equals 196 what does x equal

natulia [17]

Answer:

Step-by-step explanation:

<h2>Solve for x</h2>

$x^{2} = 196$

this can be solved by square rooting 196

$x = \sqrt{196}$

x = 14

<h3>the value for x is 14</h3>

3 0

3 years ago

Read 2 more answers

Find x, if the distance end points is (x,1) and (4,4) with the total distance is the square root of 10.

Alex Ar [27]

Okay, take a look at diagram 1 (I know it's rubbish I did it on paint :D), this shows all the information you've given in the question. The two coordinates and the distance between them.

Now if we draw additional lines on this diagram, we can make a right-angled triangle (this is on diagram 2). We can also work out the lengths of the additional sides because we know both coordinates at the end-points of the additional lines.

Finally because this is a right-angled triangle, Pythagoras' theorem must apply to its sides meaning
$( \sqrt{10} )^2 = (x-4)^2 + 3^2$
$10 = (x-4)^2 + 9$
$(x-4)^2 = 1 \Rightarrow x-4 = 1$
therefore x=5.