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Vinvika [58]
3 years ago
12

I learned probability a few years ago, but I'm not quite sure how to solve this. Can someone please lend me some knowledge?

Mathematics
2 answers:
myrzilka [38]3 years ago
5 0

Answer:

the answer will be 1/11

Step-by-step explanation:

5+2+4+1=12 and 12 two out or 12 of them will be pulled and if you think about it 8 out 4  white marbles

lutik1710 [3]3 years ago
4 0

There are 12 marbles in total. 4 of them are white.

The probability of getting a white marble on the first try is 4/12 or 1/3.

The probability of getting a second white marble in a row? Since you already pulled out a white marble on the first attempt, there are now 3 white marbles and 11 marbles in total.  So the probability of getting a white marble at this point is 3/11.

Thus the probability of doing this back to back is 1/3 * 3/11 or 3/33 or 1/11.

The answer is B.

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2 years ago
A flag staff is fixed at one corner of a rectangular room of side 20×10m.The angle of elevation on the top of the flag from oppo
Vedmedyk [2.9K]

Answer:

The height is 12.9m

Step-by-step explanation:

First we have to find the distance from the corner of the flag to the opposite corner, for this we will use Pythagoras

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h² = s1² + s2²

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h = √500

h = 22.36

Now that we know this measurement we can calculate the height of the flagpole

well to start we have to know the relationship between angles, legs and the hypotenuse

α = 30

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o: opposite  = ?

h: hypotenuse

sin α = o/h

cos α= a/h

tan α = o/a

we see that it has (angle, adjacent, opposite)

is the tangent

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7 0
3 years ago
Please help I’ll give brainiest!<br><br> Make sure to tell me steps by steps!:D
asambeis [7]

Answer:

see below

Step-by-step explanation:

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6 0
3 years ago
Words to know
Volgvan

Answer: Switch a with c and you are good. I think that is what you are asking?

Step-by-step explanation:

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