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timama [110]
3 years ago
7

I need help with 8 9 thanks

Mathematics
1 answer:
sasho [114]3 years ago
3 0
#8: $900. (I found this answer by multiplying 3000 and 0.3 by the way)
#9: 160 miles. I found this answer by multiplying 80 by two, since two halves/50% make a whole or 100%.
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These numbers are either whole numbers ,or negative of whole numbers ,they are called __
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Answer:

integers

Step-by-step explanation:

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3 years ago
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In the design shown below, four semicircles are attached to a square whose area is 36 square centimeters. Which of the following
CaHeK987 [17]

Answer:

56.549 cm   (choice 1)

Step-by-step explanation:

If the area of the square if 36 cm, then each side is 6 cm.

That means the diameter for each semi circle is also 6 cm.

Formula for a semi circle is 1/2(πr²)

We need the radius, which is half the diameter. So the radius is 6÷2= 3

Now plug in to the formula.

A= 1/2(π3²)

A= 14.137 (nearest hundredths)

Now multiply that by 4, because there are 4 semi circles

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3 years ago
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max2010maxim [7]

Answer:

36.58% probability that one of the devices fail

Step-by-step explanation:

For each device, there are only two possible outcomes. Either it fails, or it does not fail. The probability of a device failling is independent of other devices. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

A total of 15 devices will be used.

This means that n = 15

Assume that each device has a probability of 0.05 of failure during the course of the monitoring period.

This means that p = 0.05

What is the probability that one of the devices fail?

This is P(X = 1)

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P(X = 1) = C_{15,1}.(0.05)^{1}.(0.95)^{14} = 0.3658

36.58% probability that one of the devices fail

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3 years ago
Please help me this is due today How many students do not prefer pepperoni pizza ??
Rina8888 [55]

Answer:

50%

Step-by-step explanation:

how ever many kids are in that class, divide it by 2 and that will be the amount of kids that do not prefer pepperoni (:

3 0
4 years ago
Brittanya opened a savings account with $200. She saves $50 per month. Which of the following equations can be used to find how
monitta
50x12=600 600+200=800
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3 years ago
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