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3 years ago

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Mathematics

1 answer:

Elza [17]3 years ago

5 0

Joan worked 22 hours, and Erin worked 11 hours. All together (including Sara's hours) they worked 61 hours.

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Round 0.42 to the nearst tenth

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4 years ago

Describe a sequence of transformations that shows that Polygon A is congruent to Polygon B.

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3 years ago

Twelve more than two times a number is 32

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Answer: 76

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3 years ago

Linda throws a dart that hits the square shown below: A square is drawn. A circle of radius 9 units touches the sides of the squ

nataly862011 [7]

Probability helps us to know the chances of an event occurring. The probability of Linda's dart hitting the circle is 0.7857.

<h3>What is Probability?</h3>

The probability helps us to know the chances of an event occurring.

$\rm{Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}$

As it is given that the circle touches the sides of the square. therefore, the length of the side of the square is the diameter of the circle.

Now, in order to calculate the probability that the dart hits a point in the circle we need to calculate the area of the circle and the area of the square.

Area of the circle with a given radius of 9 units,

$\text{Area of the circle} = \pi r^2$

$\rm = \pi \times (9^2)\\\\= 81\pi\ units^2$

Area of the square with sides equal to the diameter of the circle,

$\rm \text{Area of square} = side^2$

$\rm = Diameter ^2\\\\= (2 \times radius)^2\\\\= (2 \times 9)^2\\\\= 18^2\\\\= 324\ units^2$

Now, the probability that the dart hits a point in the circle can be written as,

$\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\Probability=\dfrac{\text{Area of the circle}}{\text{Area of square}}\\\\\\Probability=\dfrac{81 \pi}{324} = 0.7857$

Hence, the probability of Linda's dart hitting the circle is 0.7857.

Learn more about Probability:

brainly.com/question/795909

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2 years ago

A. Download the printable diagram of the real number system. B. Find 10 numbers in the real world, with at least one number from

Ksju [112]

Answer:

Natural Number: 1, 2, 3

Whole number: 7, 19, 24

Integer: 12

Rational Number: 8, 1.5

Irrational Number: π

Step-by-step explanation:

8th grade k-12 xx

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3 years ago