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Ilya [14]
3 years ago
6

Determine the value of c for each figure

Mathematics
1 answer:
erica [24]3 years ago
6 0

Answer:

can you tell me a little bit more?

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There are 3 pink, 3 violet, 4 yellow, and 2 brown marbles in a hat. you pick 2 marbles from the hat. marbles are not returned af
snow_lady [41]
First, we add everything together, so; 3 + 3 + 4 + 2 = 12. This means every marble has a 8.33% chance of being chosen, however since there are more than others we add those separate percentages together. 

Pink: 25%
Violet: 25%
Yellow: 33.33%
Brown: 16.66%
These are the chances of you getting either color. Since the problem asks what is the probability of finding a violet marble,we just look at the written percentages to see we have a 25% chance of choosing a violet marble.

The next step is to see what is the probability of choosing a pink marble, except we have to change things up a bit. Since we removed 1 marble, that changes ALL the percentages again, so we must rewrite the percentages. 12 - 1 is easily solved as 11, and so this means every marble has a 9.0909091% of being chosen. Let's rewrite the grouped percentages now:

Pink: 27.27%
Violet: 18.18%
Yellow: 36.36%
Brown: 18.18%

Now we see that with one marble removed, and that marble not being pink, we have a 27.27% chance of picking a pink marble.

Your Answer: 25% of Violet first time, 27.27% of Pink second time.

(How To Get Percentages?): Simple, you divide 100 (since whatever number we start out with as long as it claims nothing is missing equal 100%) by whatever number of objects you have. So as an example, if I have 5 objects, 100 / 5 = 20. This means every individual object has a 20% chance of being chosen. But we then arrange everything into whatever groups (in your problems case, colors) and multiply by the amount. So say I have 3 green balls and 2 white balls, 3 x 20 = 60 and 2 x 20 = 40 so I have a 60% of getting a green ball and 40% chance of a white ball.

Hope this helps and I hope even more you learned something :D
4 0
3 years ago
Christina collects stamps. She has 47 stamps in all. She has 20 stamps from europe. The number of African stamps is 2 times the
astraxan [27]
She has 47 total
20 are from Europe
some are from Africa,
and some from Asia

how many from Africa? hmm let's say "a"
how many from Asia? hmm let's say "b"

we know that, she has twice as many "a" as she has "b" stamps,
so, whatever "b" is, a = 2 * b, or a = 2b

so.. let us add them together

\bf \begin{array}{llllllll}
20&+&a&+&b&=&47\\
\uparrow &&\uparrow &&\uparrow \\
europe&&africa&&asia\\
\downarrow &&\downarrow &&\downarrow \\
20&+&2b&+&b&=&47
\end{array}

solve for "b", to see how many from Asia she has

what's "a"? well, a = 2b , that's how many African ones she has :)
5 0
3 years ago
3(2)(-4)-2(5-7)³+10÷5(3) <br>STEP BY STEP PLEASE. Thank you!​
SCORPION-xisa [38]

Mark  \: as  \: brainliest

3 0
3 years ago
A/b + c/b=? Simmmmmpppppllllliiiifffyyy
liubo4ka [24]

Answer:

\frac{A+c}{b}

Step-by-step explanation:

\frac{A}{b}+\frac{c}{b}

3 0
2 years ago
Read 2 more answers
141.1933-67.53 =<br> (Divided, not minus)
Sphinxa [80]

Answer: I think its 2.09

Step-by-step explanation:

But i'm not sure.

5 0
3 years ago
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