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3 years ago

A circle is cut from a square piece of cloth, as shown.

Mathematics

1 answer:

ziro4ka [17]3 years ago

8 0

Answer:

area of a circle= πr²

= 3.14×18×18×

=1017.36 in²

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Please tell me where I went Wrong. I am Confused

aivan3 [116]

The final answer would be 39/19 it doesn't simplify any more and if it did the 19 would be reduced as well as the 39

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3 years ago

A student answers a multiple-choice examination question that offers four possible answers. Suppose the probability that the stu

Nitella [24]

Answer: 0.9730

Step-by-step explanation:

Let A be the event of the answer being correct and B be the event of the knew the answer.

Given: $P(A)=0.9$

$P(A^c)=0.1$

$P(B|A^{C})=0.25$

If it is given that the answer is correct , then the probability that he guess the answer $P(B|A)= 1$

By Bayes theorem , we have

$P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(C|A^c)P(A^c)}$

$=\dfrac{(1)(0.9)}{(1))(0.9)+(0.25)(0.1)}\\\\=0.972972972973\approx0.9730$

Hence, the student correctly answers a question, the probability that the student really knew the correct answer is 0.9730.

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3 years ago

Solve x2 – 8x = 3 by completing the square. Which is the solution set of the equation?

vazorg [7]

Answer:

x = 4 ± $\sqrt{19}$

Step-by-step explanation:

Given

x² - 8x = 3

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 4)x + 16 = 3 + 16

(x - 4)² = 19 ( take the square root of both sides )

x - 4 = ± $\sqrt{19}$ ( add 4 to both sides )

x = 4 ± $\sqrt{19}$

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2 years ago

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Nutka1998 [239]

The correct answer is D

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3 years ago

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daser333 [38]

You are only showing one pair of triangles

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3 years ago