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oksano4ka [1.4K]
3 years ago
13

There are 6 chemical elements represented by Li, Na, Mg, Rb, Cs, and Fr that

Mathematics
2 answers:
Bumek [7]3 years ago
5 0

Answer:

1/6

Step-by-step explanation:

I think this is tricky.

when you randomly choose the 1st two times, it doesn't matter as long as Na was not chosen, otherwise the probability would become ZERO for the 3rd one be Na.

So, after 1st two is removed, there are only 4 left in the pool, so picking Na at the 3rd draw is 1/4 probability.

But, come to think of it, when 1st draw, you have to draw the other 5 out of 6, 2nd draw the 4 out of 5, then 3rd is 1 Na out of the 4.

So, 5/6 x 4/5 x 1/4 = 1/6

serg [7]3 years ago
4 0
The answer is going to be 1/6
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Pls tell the value of Y pls pls
frosja888 [35]

4 × y - y = 36

4y - y = 36

Combining 4y and -y to get 3y

3y = 36

Dividing both sides by 3

y = 36/3

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6 0
2 years ago
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vodka [1.7K]

Answer:

1 4p= 32

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MatroZZZ [7]

Answer:

A

Step-by-step explanation:

x+y=34 (add the seperate hours together to get the total amount of hours)

10x+15y=410 (multiply the money made each hour by the hours worked and add them together to get the amount of money joy made)

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3 years ago
Four friends went to the movies together. Each ticket cost $8, and then each person also bought a soda for $3.75. Two friends ea
photoshop1234 [79]

Answer:

$37.00

Step-by-step explanation:

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4 friends, each ticket costs $8

4*8=32

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4*3.75=15

$15

Total:

tickets + sodas

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7 0
3 years ago
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IgorLugansk [536]

Answer:

1/4h

Step-by-step explanation:

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The car trip is 1/4h long.

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