2 years ago

Twice a number k plus the quantity s minus

1 answer:

max2010maxim [7]2 years ago

4 0

In expression form, this is 2k + s, but I think a part of the question was accidentally left out. Was there any more to the question?

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2 years ago

Suppose we have a group of 10 light users and 10 heavy users. what is the probability that exactly 3 of the 20 users are hiv pos

dmitriy555 [2]

Answer: The answer is 30%.

Step-by-step explanation: Given that there is a group of 10 light users and 10 heavy users. We are to find the probability that exactly 3 of the 20 users are HIV positive.

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(ii) 1 is a light user and 2 are heavy users.

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$p\\\\=\dfrac{3\times 0.45+1\times 0.45+2\times 0.55+2\times 0.45+1\times 0.55+3\times 0.55}{20}\\\\=\dfrac{6}{20}\\\\=0.3\\\\=30\%.$

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2 years ago

Angelo's Pizza is having a ticket raffle to raise money for new soccer uniforms. A $1 ticket gives an even chance to win $25 gif

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The error rate has decreased after changing the painting process.

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Abdulla knows that 20 percent of the parts have an error in their painting. After suggesting changes in painting process, he wants to know whether the error rate has changed.

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After changing the painting process 0.15% of parts have error.

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2 years ago