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belka [17]
3 years ago
10

A bag contains yellow marbles and blue marbles, 42 in total. The number of yellow marbles is 2 less than 3 times the number of b

lue marbles. How many yellow marbles are there?
Mathematics
2 answers:
lions [1.4K]3 years ago
8 0

Answer:

31 yellow marbles

Step-by-step explanation:

Juliette [100K]3 years ago
4 0
There are 31 yellow marbles. Work is attached.
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A student repeats the process of taking blocks out of a bag and replacing them 100 times. A green block is drawn 67 times. What
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Using it's concept, it is found that a good estimate for the probability of drawing out a green block from the bag is of 0.67 = 67%.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

In this problem, to get a good estimate, we get the probability taking the outcomes from the sample, that is, 67 green blocks out of 100 blocks, hence:

p = 67/100 = 0.67.

A good estimate for the probability of drawing out a green block from the bag is of 0.67 = 67%.

More can be learned about probabilities at brainly.com/question/14398287

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solniwko [45]

Step-by-step explanation:

(1+3x-1)×{1-(3x-1)}

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=3x.3x

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3 years ago
Jules has $1,200 and is saving $40 per week. Kelsey has $400 and is saving $50 a week. In how many weeks will Jules and Kelsey h
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write an expression for the calculation the difference of 35 and 7 divided by the difference of 9 and 2​
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Answer:

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4

Step-by-step explanation:

6 0
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