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Travka [436]
3 years ago
6

Helen has a box of marbles. Of the marbles are yellow. Of the marbles are red. The rest of the marbles are blue. Helen pulls one

marble out of the box at random, records its color, replaces it, and mixes up the marbles again. If she does this 200 times, how many blue marbles should she expect to pull out?
Mathematics
1 answer:
ira [324]3 years ago
4 0

Answer:

what are the numbers of the red and yellow marbles

Step-by-step explanation:

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The measure of b is..
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Answer:

b =21

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 + b^2 = c^2 where a  and b are the legs and c is the hypotenuse

20^2 + b^2 = 29^1

400 + b^2 =841

Subtract 400 from each side

b^2 = 441

Take the square root of each side

sqrt(b^2) = sqrt(441)

b =21

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aleksley [76]

Answer:

a) 7 weeks b) George's

Step-by-step explanation:

Sally's score can be modeled by 10x+850.

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Step-by-step explanation:

Because -3.1 more close to 0 so is supposed to be bigger than -3.7

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Step-by-step explanation:

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