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saveliy_v [14]
3 years ago
15

Vanessa bought 6 feet of ribbon. She cut off 33 inches to wrap a package and 11 inches to decorate her scrapbook. How many inche

s of ribbon Vanessa has left?
Mathematics
1 answer:
valentinak56 [21]3 years ago
3 0
28 inches of the ribbon are left
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A triangle has side lengths of
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3 is the right one

Step-by-step explanation:

Simple math you know

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A bag contains 105 red and blue marbles. The ratio of red to blue marbles is 2:5. How many red marbles are in the bag?
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30 red marbles

Step-by-step explanation:

If the ratio is 2 red marbles for every 5 blue marbles then you would add them together to find out how many marbles are in one group.

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Now we have to find out how many total groups there are by dividing the total amount of marbles by the amount in each group.

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An electronic product contains 48 integrated circuits. The probability that any integrated circuit is defective is 0.01, and the
BigorU [14]

Answer:

0.6173 = 61.73% probability that the product operates.

Step-by-step explanation:

For each integrated circuit, there are only two possible outcomes. Either they are defective, or they are not. The integrated circuits are independent. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

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P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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And p is the probability of X happening.

An electronic product contains 48 integrated circuits.

This means that n = 48

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The product operates only if there are no defective integrated circuits. What is the probability that the product operates?

This is P(X = 0). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

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0.6173 = 61.73% probability that the product operates.

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