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Andrew [12]
3 years ago
6

Find the area of a circle with a diameter of 3 inches

Mathematics
2 answers:
umka21 [38]3 years ago
5 0
The area of the circle with a diameter of 3 inches is 7.07 in2
Oksanka [162]3 years ago
5 0
The answer is 7.07 in square

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antiseptic1488 [7]

Answer:

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Step-by-step explanation:

the ratio is 4 to 3

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3 years ago
Eric throws a biased coin 10 times. He gets 3 tails. Sue throw the same coin 50 times. She gets 20 tails. Aadi is going to throw
iren2701 [21]

Answer:

(1) The correct option is (A).

(2) The probability that Aadi will get Tails is \frac{2}{5}.

Step-by-step explanation:

It is provided that:

  • Eric throws a biased coin 10 times. He gets 3 tails.
  • Sue throw the same coin 50 times. She gets 20 tails.

The probability of tail in both cases is:

  • P(\text{Tail})=\frac{3}{10}
  • P(\text{Tail})=\frac{20}{50}=\frac{2}{5}

(1)

According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

In this case we need to compute the proportion of tails.

Then according to the Central limit theorem, Sue's estimate is best because she throws it <em>n = </em>50 > 30 times.

Thus, the correct option is (A).

(2)

As explained in the first part that Sue's estimate is best for getting a tail, the probability that Aadi will get Tails when he tosses the coin once is:

P(\text{Tail})=\frac{20}{50}=\frac{2}{5}

Thus, the probability that Aadi will get Tails is \frac{2}{5}.

7 0
3 years ago
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Please help me solve this
sp2606 [1]

Answer:

-1

Step-by-step explanation:

Let's use the formula!

6 - 3 = 3

-4 - (-1) = -3

The slope is -3/3 or -1

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20c(4 in the top right)d(7 in the top right)

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likoan [24]

Answer:

45

Step-by-step explanation:

We make a proportion and solve it:

\frac{x + 18}{x}  =  \frac{28}{20}

28 x = 20x+360

8x=360

x=45

4 0
1 year ago
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