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
mash [69]
3 years ago
9

How can I solve that

Mathematics
1 answer:
tia_tia [17]3 years ago
3 0
B and for question 3 b
You might be interested in
I NEED HELP! with these 5, & 7?
pochemuha

Answer:

5 is -20

7 is -5

3 0
3 years ago
Read 2 more answers
Avoiding an accident while driving can depend on reaction time. Suppose that reaction time, measured from the time the driver fi
Nadya [2.5K]

Answer:

2.5% of drivers have a reaction time more than 2.14 seconds

16% of drivers have a reaction time less than 1.78 seconds

84% of drivers have a reaction time less than 2.02 seconds

Step-by-step explanation:

The Empirical Rule(68-95-99.7 rule) states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

The normal distribution is symmetric, which means that 50% of the measures are below the mean and 50% are above.

In this problem, we have that:

Mean = 1.9s

Standard deviation = 0.12

What percentage of drivers have a reaction time more than 2.14 seconds?

2.14 = 1.9 + 2*0.12

So 2.14 is two standard deviations above the mean.

Of the 50% of the measures above the mean, 95% are within 2 standard deviations of the mean, so, below 2.14. The other 5% is above.

0.05*0.5 = 0.025

2.5% of drivers have a reaction time more than 2.14 seconds

What percentage of drivers have a reaction time less than 1.78 seconds?

1.78 = 1.9 - 0.12

So 1.78 is one standard deviation below the mean.

Of the 50% of the measures that are below the mean, 68% are within one standard deviation of the mean, that is, greater than 1.78.

100 - 68 = 32

0.32*50 = 0.16

16% of drivers have a reaction time less than 1.78 seconds

What percentage of drivers have a reaction time less than 2.02 seconds?

2.02 = 1.9 + 0.12

So 2.02 is one standard deviation above the mean.

Of the measures that are below the mean, all are below 2.02.

Of those that are above, 68% are below 2.02.

0.5 + 0.68*0.5 = 0.84

84% of drivers have a reaction time less than 2.02 seconds

5 0
3 years ago
If two rays share an endpoint,then they are opposite rays
Readme [11.4K]
When their endpoint angle measure up to 180 then they can be called opposite rays
4 0
1 year ago
PLEASE HELP ASAP!!!!! WILL GIVE BRAINLIEST!
dusya [7]
If I am not mistaken it is D.

Can I please be Brainliest?
3 0
3 years ago
Read 2 more answers
Write 41 as a fraction of 84
d1i1m1o1n [39]
41 = x/84

x=84*41
x=3444

41 as a fraction of 84 is 3444/84
5 0
3 years ago
Other questions:
  • A factory worker in Cambodia makes 320,000 Cambodian Riels per month. If 1 U.S. dollar equals 4000 Cambodian Riels, how much doe
    14·1 answer
  • What is the sequence? <br> 1,8,27,64,125
    11·1 answer
  • A hobbyist is making a toy sailboat. For the triangular sail, she wants the height h (in inches)
    6·1 answer
  • Martina has a spinner with sections of equal size on section is labled left the other labled right what is the total sections th
    6·1 answer
  • Match each word with its best
    13·1 answer
  • 5 times a number is 110 less than 7 times that number
    5·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B5%7D%20%3D%20%5Cfrac%7B10%7D%7B2%7D" id="TexFormula1" title="\frac{x}{5} = \f
    15·1 answer
  • Jonas runs A store that sells guinea pigs he wants to ensure that he has more than 1 pound of dry food for every five guinea pig
    12·2 answers
  • Can sombody plz help I will make them brainless or something like that plz help
    13·2 answers
  • Ram is 3 years younger than Shyam and Krishna is 5 years older than Shyam . If the product of percentages of Ram and Krishna is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!