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3 years ago

Please help

Mathematics

1 answer:

irinina [24]3 years ago

4 0

Answer:

Answer:

1/9

Step-by-step explanation:

4 people use all three facilities, then

16 - 4 = 12 people use the gym and the track and do not use the pool;

9 - 4 = 5 people use the pool and the track and do not use the gym;

19 - 4 = 15 people use the gym and the pool and do not use the track.

At least two facilities use 4 + 12 + 5 + 15 = 36 people, 4 of them use all three facilities. Thus, the probability that a randomly selected person which uses at least two facilities, uses all the facilities is 4/36=1/9

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16=m-14 can somebody solve this please

Nonamiya [84]

16=m-14
16=m-14+14
14+16=m
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4 years ago

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A bag of candy includes pieces with different colors as shown in the table.

zvonat [6]

Part A: About 0.21

We will put the wanted outcome (yellow pieces of candy) over the total number of possible outcomes (total pieces of candy).

$\frac{5}{3+6+5+2+8}$

$\frac{5}{24}$

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Part B: About 50

First we will do the same as we did with the yellow pieces of candy, wanted outcomes over possible outcomes.

$\frac{6}{3+6+5+2+8}$

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Now, we will multiply the total 200 pieces by 0.25 since 0.25 of them are estimated to be green.

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2 years ago

Find the missing number:

Makovka662 [10]

Answer:

20%

Step-by-step explanation:

If you see they say that the number decreased is 10% each and they say it two times. we could see that the missing number is as big as the length of two 10% together, so if you add them two you get 20%.

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3 years ago

Anyone???<br><br> Mathematics

irinina [24]

The slope is rise over run
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3 years ago

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Calculate the area of the following figure correct to 2 decimal places if can show or explain work

grin007 [14]

The way we approach a question like this, is by looking at what portion of the circle we actually have to calculate the area of. We know that a circle is a shape that goes 360 degrees around a point. Therefore we know that, for example, a semicircle, or half a circle, would cover half the amount of degrees. This is important, because as well as covering half the number of degrees, it also covers half the area. For the figure in your picture, we are told that the portion missing from the circle is 90 degrees (shown by the right angle symbol in the center).
this means that 90 degrees worth of the circle is missing, so if we do 360÷90, we find that the answer equals $\frac{3}{4}$ . This means that we are dealing with $\frac{3}{4}$ of a circle. So, we simply find the area of the circle normally, and then multiply by <span> $\frac{3}{4}$ :
The formula for area of a circle is </span> $\pi r^{2}$ , so in this case, it can be said to be $\pi (10^{2} )$ , which is equal to 314.15
Now we simply take that area and multiply it by the fraction we established earlier:
314.15 x $\frac{3}{4}$ = 235.61
Therefore the area of the figure is 235.61 $cm^{2}$
I hope this helped and please remember to try and not only understand the answer, but the maths that worked it out too :))

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4 years ago