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IgorC [24]
3 years ago
14

Which function is graphed below

Mathematics
2 answers:
Svetlanka [38]3 years ago
6 0
I think the answer is a. f(x)= cos(x).
maxonik [38]3 years ago
6 0

Answer: Option 1 is correct.

Explanation:

This graph shows  that it cuts x-axis at \frac{\pi} {2}=0 and  at \frac{3\pi} {2}=0  which is satisfying the property of  cosx

Extrema of the graph at x=0, \frac{\pi} {2},2\pi

Properties of the given graph:

maxima at x=0 and 2\pi

minima at x=\pi}

x-intercept at x = \frac{\pi} {2}, \frac{3\pi} {2}

period = 2\pi

Range [-1,1]

Domain is all real numbers.

These all properties follows by cos x function.

So, the given graph would be of cos x

Thus, Option 1 is correct.


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Vlad1618 [11]

Answer:a) P(8 of the players numbers are drawn)=1.3×10^-8

b) P(7 of the players number are drrawn)=3.33×10^-c) P(at least 6 of the players number were drawn)=1.84×10^-4

Step-by-step explanation:

Players has 8 combinations of numbers from 1-40. The outcome S contains all the combinations of 8 out of 40

a) P(8 of the players numbers are drawn)= 1/40/8= 1.3×10^-8

There are one in hundred million chances that the draw numbers are precisely the chosen ones.

b) Number of ways of drawing 78 selected numbers from 1-40=8×(40-7)

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P(7 of the players number are drawn)=8×32/40 =3.33×10^-6.

There are approximately 300,000 chances that 7 of the players numbers are chosen

c) P(at least 6 players numbers are drawn)= 32/2×(8/6) ways to draw.

P(at least 6 players numbers are drawn)=P(all 8 chosen are drawn)+P(7 players numbers drawn)+P(6 chosen are drawn) = 1+ 8 x32/40/8 +[8\6 ×32/2]

P(at least 6 players numbers are drawn) = 1.84×10^-4.

There are approximately 5400chances that at least6 of the numbers drawn are chosen by the player.

5 0
3 years ago
Find the amount of decrease if 68 is decreased by 15%
olya-2409 [2.1K]
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3 years ago
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Sladkaya [172]
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