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3 years ago

Can you solve 6x+y=4 and x-4y=19

Mathematics

1 answer:

AysviL [449]3 years ago

4 0

2 y
6x+y=4 x= _ - _
3 6

x-4y=19 x=19+4y

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The mean number of daily surgeries at a local hospital is 6.2. Assume that surgeries are random, independent events. (a) The cou

Scilla [17]

Answer:

a) correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

b) probability for only 2 or less than 2 surgeries in a given day is 0.0536

Step-by-step explanation:

Given data:

mean number is given as 6.2

correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

we know that variance is given as $\sigma^2 = mean = 6.2$

hence, standard deviation is given as $\sqrt{6.2} = 2.48998$

thus standard deviation is 2.49

correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

b) probability for only 2 or less than 2 surgeries in a given day is

$P(X \leq 2) = P(X =0) + P(X =1) + P(X =2)$

$= \frac{e^{-6.2} 6.2^0}{0!} +\frac{e^{-6.2} 6.2^1}{1!} +\frac{e^{-6.2} 6.2^2}{2!}$

= 0.002029 + 0.012582+ 0.039006

= 0.053617

= 0.0536

7 0

3 years ago

True or false just answer like that pls

sveta [45]

Answer:

false

true

false

true

Step-by-step explanation:

brainliest?

3 0

3 years ago

Help asap! what does sinø=

RoseWind [281]

Answer:

-3/5

Step-by-step explanation:

Pythagorean formula :

x^2 + y^2 = r^2

(-8)^2 + (-6)^2 = r^2

64 + 36 = 100

r^2 = 100

r= 10

sin is the y coordinate over the radius :

-6/10

-3/5

8 0

3 years ago

8 5/6 + 2 3/4 +__=14 this is fractions so the answer should be a fraction please help

Mariulka [41]

Answer:

2 5/12

Step-by-step explanation:

8 5/6 + 2 3/4 = 8 10/12 + 2 9/12 = 10 19/12 = 10 + 1 7/12 = 11 7/12

13 12/12 - 11 7/12 = 2 5/12

3 0

3 years ago

The line that goes horizantally (left to right) across the graph is called what? *

kodGreya [7K]

Step-by-step explanation:

horizontal line I believe

5 0

3 years ago