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vlada-n [284]
3 years ago
14

Solve the system using either the substitution or the elimination method X^2-y=-2 -x+y=4

Mathematics
2 answers:
GaryK [48]3 years ago
6 0
I used the substitution method and got (2,6) and (-1,3) 
Neporo4naja [7]3 years ago
6 0
Hello here is a solution :

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2 years ago
Assume that during each second, a job arrives at a webserver with probability 0.03. Use the Poisson distribution to estimate the
Savatey [412]

Answer:

The probability that at lest one job will be missed in 57 second is=1- e^{-1.71} =0.819134

Step-by-step explanation:

Poisson distribution:

A discrete random variable X having the enumerable set {0,1,2,....} as the spectrum, is said to be Poisson distribution.

P(X=x)=\frac{e^{-\lambda t}({-\lambda t})^x}{x!}  for x=0,1,2...

λ is the average per unit time

Given that, a job arrives at a web server with the probability 0.03.

Here λ=0.03, t=57 second.

The probability that at lest one job will be missed in 57 second is

=P(X≥1)

=1- P(X<1)

=1- P(X=0)

=1-\frac{e^{-1.71}(1.71)^0}{0!}

=1- e^{-1.71}

=0.819134

6 0
3 years ago
A triangle with angle measures of 20° and 30° is a (FILL IN THE BLANK) triangle.
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A car is driving northwest at vv mph across a sloping plain whose height, in feet above sea level, at a point nn miles north and
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 <span>Northwest is 45 degrees north of west. If a car travels a distance x miles northwest, its northerly component gains x/sqrt(2) miles and its easterly component LOSES xsqrt(2)/ miles. 

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