1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ket [755]
3 years ago
10

PLEASE PLEASE PLEASE HELP MEE!!!!!!!!!!!!!!!!

Mathematics
1 answer:
ivanzaharov [21]3 years ago
5 0

Answer:

It is C

Step-by-step explanation:

You might be interested in
What is the answer to 2(9+7)
FrozenT [24]

Answer: 32

Step-by-step explanation:

1.) Write the initial equation: 2(9+7)

2.) Add the values in the parentheses: 2(16)

3.) Multiply the value in the parentheses by 2: 2(16) = 32

5 0
3 years ago
Read 2 more answers
14=h/5<br><br> Help me please
ValentinkaMS [17]

Answer:

14=h/5

h=14*5

h=70

<u>Check</u>:

70/5=14

Hope this helps

6 0
3 years ago
Explain how knowing 50×4 = 200 helps you find 500 times 400.
skad [1K]

it equals to 200,000


4 0
3 years ago
Percentage change 42 increased to 145
dedylja [7]
The answer should be 103? because when you add 103 to 42 u should get 103%.
3 0
3 years ago
Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviat
drek231 [11]

Answer:

E(X) = \sum_{i=1}^n X_i P(X_i) = 0*0.031 +1*0.156+ 2*0.313+3*0.313+ 4*0.156+ 5*0.031 = 2.5

We can find the second moment given by:

E(X^2) = \sum_{i=1}^n X^2_i P(X_i) = 0^2*0.031 +1^2*0.156+ 2^2*0.313+3^2*0.313+ 4^2*0.156+ 5^2*0.031 =7.496

And we can calculate the variance with this formula:

Var(X) =E(X^2) -[E(X)]^2 = 7.496 -(2.5)^2 = 1.246

And the deviation is:

Sd(X) = \sqrt{1.246}= 1.116

Step-by-step explanation:

For this case we have the following probability distribution given:

X          0            1        2         3        4         5

P(X)   0.031   0.156  0.313  0.313  0.156  0.031

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

The variance of a random variable X represent the spread of the possible values of the variable. The variance of X is written as Var(X).  

We can verify that:

\sum_{i=1}^n P(X_i) = 1

And P(X_i) \geq 0, \forall x_i

So then we have a probability distribution

We can calculate the expected value with the following formula:

E(X) = \sum_{i=1}^n X_i P(X_i) = 0*0.031 +1*0.156+ 2*0.313+3*0.313+ 4*0.156+ 5*0.031 = 2.5

We can find the second moment given by:

E(X^2) = \sum_{i=1}^n X^2_i P(X_i) = 0^2*0.031 +1^2*0.156+ 2^2*0.313+3^2*0.313+ 4^2*0.156+ 5^2*0.031 =7.496

And we can calculate the variance with this formula:

Var(X) =E(X^2) -[E(X)]^2 = 7.496 -(2.5)^2 = 1.246

And the deviation is:

Sd(X) = \sqrt{1.246}= 1.116

6 0
3 years ago
Other questions:
  • Question in picture below.
    13·2 answers
  • 94.4=8(m+3.2) what is m
    15·2 answers
  • 5 meters to 20 meters as fraction
    13·2 answers
  • How many 9 digit combinations with 10 numbers?
    6·1 answer
  • Identify the conic section of xy=4
    9·1 answer
  • How can you describe the relationships among angles and sides in a triangle?
    8·1 answer
  • So basically I need help
    12·1 answer
  • 1. Which monomial has the highest<br> degree?<br> A 18a5<br> B 12ab<br> C 9ab<br> D 6abaca
    10·1 answer
  • Multiple choice geometry help trig ?!!!!!!!!
    12·1 answer
  • HELPPP LAST ATTEMPT!!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!