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
adell [148]
3 years ago
12

What percent of 71 hours is 108 hours?

Mathematics
1 answer:
marta [7]3 years ago
6 0

Answer:

jekjkjkjkldjkefjfff a

Step-by-step explanation:

You might be interested in
Given FH is the median of EFG find x, EH, and HG. ​
Marianna [84]
Yeah his answer is correct Good job!
4 0
2 years ago
A true-false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of
disa [49]

Answer:

E(X)=\sum_{i=1}^n X_i P(X_i)  

And if we use the values obtained we got:  

E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48  

For this case this value means that the expected score is about 7.48

Step-by-step explanation:

For this case we assume the following probability distribution:

X         5       6         7       8        9        10

P(X)   0.05   0.15  0.33  0.28   0.12   0.07

First we need to find the expected value (first moment) and the second moment in order to find the variance and then the standard deviation.

In order to calculate the expected value we can use the following formula:  

E(X)=\sum_{i=1}^n X_i P(X_i)  

And if we use the values obtained we got:  

E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48  

For this case this value means that the expected score is about 7.48

In order to find the standard deviation we need to find first the second moment, given by :  

E(X^2)=\sum_{i=1}^n X^2_i P(X_i)  

And using the formula we got:  

E(X^2)=(5^2 *0.05)+(6^2 *0.15)+(7^2 *0.33)+(8^2 *0.28)+ (9^2 *0.12 +(10^2 *0.07))=57.46  

Then we can find the variance with the following formula:  

Var(X)=E(X^2)-[E(X)]^2 =57.46-(7.48)^2 =1.5096  

And then the standard deviation would be given by:  

Sd(X)=\sqrt{Var(X)}=\sqrt{1.5096}=1.229  

5 0
3 years ago
Read 2 more answers
A recent Harris Poll survey of 1010 U.S. adults selected at random showed that 627 consider the occupation of firefighter to hav
Semmy [17]

Answer: 0.62

Step-by-step explanation:

Given : A recent Harris Poll survey of 1010 U.S. adults selected at random showed that 627 consider the occupation of firefighter to have very great prestige.

i.e. The sample size of U.S. adults : n= 1010

The number of U.S. adults consider the occupation of firefighter to have very great prestige : x= 627

Now , the probability that a U.S adult selected at random thinks the occupation of firefighters has very great prestige will be :

\hat{p}=\dfrac{x}{n}\\\\=\dfrac{627}{1010}=0.620792079208\approx0.62  [ To the nearest hundredth]

Hence, the estimated probability that a U.S adult selected at random thinks the occupation of firefighters has very great prestige = 0.62

5 0
3 years ago
Which is the MOST a Which cell structure functions like a power plant for a eukaryotic cell? A. nucleus B. cytoplasm C. mitochon
Ivahew [28]

Answer:

c

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help me quick ASAP!!
Crank
A hope this helps 
llll
7 0
3 years ago
Read 2 more answers
Other questions:
  • What fraction is equivalent to this decimal? <br><br> 0.16 (with the 6 repeating)
    10·1 answer
  • What is this -5g-13g=54?
    9·2 answers
  • Given a pair parallel lines cut by a transversal same interior angles are supplementary?
    11·1 answer
  • C-1=8<br>solve each equation. check your solution​
    15·2 answers
  • Given y=-3/4x-2. What is the equation of the line that is perpendicular and has the point (-4,1)? Write answer in slope intercep
    6·1 answer
  • Use the explicit formula an=a1+(n-1)•d to find the 300th term of the sequence below 57,66,75,84,93
    6·2 answers
  • Select all ordered pairs that are solutions of y=3x−1.
    6·1 answer
  • Please tell i really need the answer:
    5·1 answer
  • PLS HELP WILL MARK YOU BRAINLIEST! NO FAKE ANSWERS
    14·1 answer
  • In the figure below AOD is a diameter of the circle cetre O. BC is a chord parallel to AD. FE is a tangent to the circle. OF bis
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!