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mario62 [17]
3 years ago
11

HELP PLEASE :( I WOULD APPRECIATE SO MUCH

Mathematics
1 answer:
aleksklad [387]3 years ago
4 0

Answer:

It has no solution because the two lines would never meet since they have the same slope of -3

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x P(x) 0 0.25 1 0.3 2 0.1 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 de
barxatty [35]

Answer:

The standard deviation of this probability distribution is 1.2.

Step-by-step explanation:

We have that:

P(X = 0) = 0.25

P(X = 1) = 0.3

P(X = 2) = 0.1

P(X = 3) = 0.35

Mean:

Each value multiplied by its probability. So

M = 0*0.25 + 1*0.3 + 2*0.1 + 3*0.35 = 1.55

Variance:

Sum of the squares of the values subtracted from the mean, and multiplied by its probability.

V = 0.25*(0-1.55)^2 + 0.3*(1-1.55)^2 + 0.1*(2-1.55)^2 + 0.35*(3-1.55)^2 = 1.4475

Standard deviation:

Square root of the variance. So

S = \sqrt{V} = \sqrt{1.4475} = 1.2

The standard deviation of this probability distribution is 1.2.

6 0
3 years ago
He difference between -7/9 and 4/9 is _____.
lianna [129]

Answer:

-1.2 or -11/9 or -1  2/9

Step-by-step explanation:

7 0
3 years ago
Alicia has been putting her money from work into her savings account. The equation f(x)=13x+100 can be used to represent the inc
labwork [276]

Answer:

f(18)=334

Step-by-step explanation:

  • f(x)=13x+100
  • f(18) = 13(18)+100
  • f(18)=234+100
  • f(18)=334
3 0
2 years ago
Is the ratios of 7:11 and 21:33 equal to?
MrRissso [65]
Hope this helps!!!!!!

5 0
3 years ago
You aint even saying why is yes you chould try explaining it better next time.
olchik [2.2K]
What are you talking about?
3 0
2 years ago
Read 2 more answers
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