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3 years ago

20. Two collinear rays that do not intersect? How would I draw this?

Mathematics

1 answer:

eimsori [14]3 years ago

3 0

Answer:

Two collinear rays are parallel to each other.

Step-by-step explanation:

Two collinear rays parallel to each other, and they are on the same plane. Thus they do not meet even when extended till infinity.

An example of collinear rays is when you draw two parallel rays on a plain paper placed on an horizontal surface.

Your drawing should look like what is attached to this answer.

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In each turn of a game you toss two coins. if 2 heads come up, you win 2 points and if 1 head comes up you win 1 point. if no he

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The expected value of the number of points for each turn is 0.25

<h3>What is expected value?</h3>

Expected value describes the long term average level of a random variable based on its probabilty distribution.

Now, Probability that 2 heads come up is

P(2 is H) = 1/4

Probability that 1 heads come up is

P(1 is H) = 2/4

⇒P(1 is H) = 1/2

Probability that no head will come up

P(no H's) = 1/4

Hence, the expected value for winning of 2points, 1point and lose of3 points is given as-

Expected value = 2 * P(2 is H) + 1 * P(1 is H) - 3 * P(no H's)

⇒Expected value = 2 * 1/4 + 1 * 1/2 - 3 * 1/4

= 0.5 + 0.5 - 0.75

⇒Expected value = 0.25

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1 year ago

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Answer:

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2 years ago

In Australia, road distance is measured in kilometres.

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The internal height of a rectangular box is 10.5cm.The thickness of the bottom is 3/5cm and the thickness of the top is 1cm.What

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The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. The external height of the box is 12.1 cm.

<h3>What is Addition?</h3>

The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.

Given that the internal height of a rectangular box is 10.5cm. The thickness of the bottom is 3/5cm and the thickness of the top is 1cm. Therefore, the external height of the rectangular box is,

Height of rectangular box

= Thickness of bottom + Internal height of the box + Thickness of the top

= 3/5 cm + 10.5 cm + 1 cm

= 0.6cm + 10.5cm + 1cm

= 12.1 cm

Hence, the external height of the box is 12.1 cm.

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1 year ago

(3a ^2 + 1) - ( 4+2a^2)

xz_007 [3.2K]

Answer:

a^2 - 3

Step-by-step explanation:

(3a^2 + 1) - (4 + 2a^2)

3a^2 + 1 - 4 - 2a^2

a^2 - 3

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2 years ago

20. Two collinear rays that do not intersect? How would I draw this?​

20. Two collinear rays that do not intersect? How would I draw this?