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3 years ago

I will mark brainliest if you are correct!

Mathematics

2 answers:

notsponge [240]3 years ago

6 0

Answer:

i think the answer is C

Step-by-step explanation:

Sedbober [7]3 years ago

4 0

Answer:

Look below.

Step-by-step explanation:

Uh here's what I did:

-2x-6= -10

Add 6 to both sides.

-2x=-4

Divide both sides by -2

x=2

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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

2 years ago

Pls Help me I need it

ad-work [718]

Answer:

${2}^{7}$

Step-by-step explanation:

${2}^{7} = 128$

${7}^{2} = 49$

So,

$128 > 49 \\ {2}^{7} \: \: \: \: > {7}^{2}$

Therefore 2^7 is greater

4 0

3 years ago

Use the substitution method to solve the system of equations 5x-2y=9 3x+4y=-5

krek1111 [17]

Answer:

(1,-2)

Step-by-step explanation:

x= 1

y= 2

3 0

2 years ago

Fiona’s school has three hallways that make up three sides of a triangular building design. In the morning, Fiona walks 90 yards

lilavasa [31]

Answer:

"between 30 yards and 150 yards"

Step-by-step explanation:

Let one side of a triangle be x and another side be y. To find the possible lengths of the third side, it is given by:

Possible length of 3rd side would be between "x - y" and "x + y"

Here, given x = 90 and y = 60, so the possible length of 3rd side would be:

90 - 60 = 30,

90 + 60 = 150

Hence, in between 30 and 150

6 0

3 years ago

Read 2 more answers

(answer choices are in the pictures.) Which arc measures 180°?

nydimaria [60]

I believe it is DC

180 degrees is about halfway, so DC definitely captures that.

5 0

3 years ago