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3 years ago

What is the lenght of the unknown log in the right triangle?

Mathematics

1 answer:

Kay [80]3 years ago

7 0

N sei só quero pontos

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Consider the probability distribution shown below. x 0 1 2 P(x) 0.15 0.80 0.05 Compute the expected value of the distribution. (

larisa [96]

Answer:

Expected value =0.9

Standard deviation = 0.4359

Step-by-step explanation:

Let's use the formula to find expected value or mean.

Expected value =Σ x *P(x)

x 0 1 2

P(x) ) .15 .8 .05

So, expected value = (0)(0.15) +1(0.8)+2(0.05)

= 0 +0.8 +0.1

=0.9

Expected value =0.9

Now, let's find standard deviation

x $(x- E(x))^{2}$ $(x-E(x))^{2} *p(x)$

0 $(0-0.9)^{2}$ $(0-0.9)^{2} *0.15$ =0.1215

1 $(1-0.9)^{2}$ $(1-0.9)^{2} *0.8$ =0.008

2 $(2-0.9)^{2}$ $(2-0.9)^{2} *0.05$ =0.0605

Now, add the last column together and then take square root to find standard deviation.

Standard deviation of the distribution = $\sqrt{0.1215+0.008+0.0605)}$

Simplify it, so standard deviation =0.4358898...

Round the answer to nearest four decimal places

Standard deviation = 0.4359

7 0

3 years ago

Type the expression that results from the following series of steps start with 5 and subtract p

azamat

Answer:

5-p

Step-by-step explanation:

8 0

3 years ago

A triangle has side lengths of 24 in., 32 in., and 40 in. Is the triangle acute, obtuse, or right? A) right. B) obtuse. C) acute

Feliz [49]

24, 32 , 40. Divide through by 8

3, 4, 5,

The 3 , 4, 5 reminds of the Pythagorean triple, which is a right angled triangle.

So a triangle with sides 24, 32, 40 is a right angled triangle.

Option A.

8 0

3 years ago

Read 2 more answers

Find the value of i182. A) 1 B) i C) ?1 D) ?i

elena-14-01-66 [18.8K]

What are the question marks?
I got -1
Simplify the expression using the definition of an imaginary number.

6 0

3 years ago

Anyone know how to do this?

Airida [17]

Answer:

K is equal to 56

Step-by-step explanation:

7 0

3 years ago