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NISA [10]
3 years ago
8

There are five students standing in a line with their hats. Suddenly the wind picks up the hats and randomly assigns each hat to

a student. What is the probability that no student will get his or her own hat
Mathematics
1 answer:
laiz [17]3 years ago
5 0

Answer:

The probability of a person getting their own hat is 1/5 or 20%.

Step-by-step explanation:

If each person has one hat the chances (the probability) of them getting their own hat would be 20%. The chances (the probability) of them getting a hat that belongs to one of the other four students would be 80%. Due to there being 5 hats each person owns 1 hat so there would be a 1 out of 5 chance of them getting their own hat.

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What is the equation for a line passing through (-2,3) and perpendicular to y= -1/2+1 ?
nata0808 [166]

Answer:

y=2x+7

Step-by-step explanation:

<u><em>The correct question is</em></u>

what is the equation for a line passing through (-2,3) and perpendicular to y= -1/2<em>x</em>+1 ?

Remember

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes are equal to -1)

The slope of the given line is m=-1/2

so

the opposite reciprocal is m=2

<em>Find the equation of the line in point slope form</em>

y-y1=m(x-x1)

we have

m=2\\point\ (-2,3)

substitute

y-3=2(x+2)

<em>Convert to slope intercept form</em>

y=mx+b

isolate the variable y

y-3=2x+4

y=2x+4+3

y=2x+7

3 0
3 years ago
in a basketball game, Rachael scored 6 points less then twice the number of points trina scored. Trina scored 9 points. How many
Talja [164]
Rachael scored 12 points
7 0
3 years ago
4n+12=4 What does n equal?
solong [7]

Answer:

n = -2

Step-by-step explanation:

4n + 12 = 4

Subtract 12 from both sides.

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Divide both sides by 4.

n = -2

3 0
3 years ago
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OLEGan [10]

Answer:

So far I have gotten 3m + n, there is not equal sign so I am unable to finish this question further.

Step-by-step explanation:

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