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
nydimaria [60]
3 years ago
13

What does this mean?

Mathematics
2 answers:
tatiyna3 years ago
6 0

Answer:

it means pi.

Step-by-step explanation:

pi = 3.14..........

pi goes on forever, it never ends.

boyakko [2]3 years ago
3 0

Answer:

Its the symbol "pi" which is 3.14

You might be interested in
#5. What is the length of segment DC ?
DanielleElmas [232]

Answer:

6 units

Step-by-step explanation:

because since AC is 24 units long, and BC is half of AC, then that would be 12 units, and since DC is half of BC, then that would be six units.

6 0
3 years ago
If the probability that a randomly chosen college student uses a ride sharing app is 0.27, then what is the probability that a r
pickupchik [31]

Answer:

0.73

Took the quiz

8 0
2 years ago
What is the slope of the line?
UNO [17]

Answer:

-1.6

Step-by-step explanation:

m=y2-y1/x2-x1

(-4)-4=(-8)

4-(-1)=5

-8/5=(-1.6)

hope this helps :3

if it did pls mark brainliest

6 0
2 years ago
PLZ HELP IVE BEEN STUCK ON THIS QUESTION​
o-na [289]

Answer:

A= 16

B=?

Step-by-step explanation: srry about the second one im also confused but i tried my best.

7 0
3 years ago
A random sample of size n1= 25, taken from a normal population with a standard deviation σ1= 5, has a mean X1= 80. A second rand
sesenic [268]

Answer:

The 94% confidence interval would be given by 2.898 \leq \mu_1 -\mu_2 \leq 7.102

Step-by-step explanation:

Previous concepts  

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

\bar X_1 =80 represent the sample mean 1

\bar X_2 =75 represent the sample mean 2

n1=25 represent the sample 1 size  

n2=36 represent the sample 2 size  

\sigma_1 =5 sample standard deviation for sample 1

\sigma_2 =3 sample standard deviation for sample 2

\mu_1 -\mu_2 parameter of interest.

The confidence interval for the difference of means is given by the following formula:  

(\bar X_1 -\bar X_2) \pm z_{\alpha/2}\sqrt{\frac{\sigma^2_1}{n_1}+\frac{\sigma^2_2}{n_2}} (1)  

The point of estimate for \mu_1 -\mu_2 is just given by:

\bar X_1 -\bar X_2 =80-75=5

Since the Confidence is 0.94 or 94%, the value of \alpha=0.06 and \alpha/2 =0.03, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.03,0,1)".And we see that z_{\alpha/2}=1.88  

The standard error is given by the following formula:

SE=\sqrt{\frac{\sigma^2_1}{n_1}+\frac{\sigma^2_2}{n_2}}

And replacing we have:

SE=\sqrt{\frac{5^2}{25}+\frac{3^2}{36}}=1.118

Confidence interval

Now we have everything in order to replace into formula (1):  

5-1.88\sqrt{\frac{5^2}{25}+\frac{3^2}{36}}=2.898  

5+1.8\sqrt{\frac{6^2}{36}+\frac{7^}{49}}=7.102  

So on this case the 94% confidence interval would be given by 2.898 \leq \mu_1 -\mu_2 \leq 7.102  

7 0
3 years ago
Other questions:
  • in a group of 65 players 11 players play basketball only and 33 play cricket only, if the number of players who play cricket is
    7·1 answer
  • Mariko says that the graph that passes through (-3,-3), (-3,0), and (-3,3) represents a
    11·1 answer
  • Simplify (a^3b^12c^2)(a^5c^2)(b^5c^4)^0
    10·1 answer
  • A certain alloy contains 14.25% nickel. How much nickel is there in a piece weighing 375 pounds? Round your answer to the neares
    9·2 answers
  • How do you write 715.7 in scientific notation
    9·2 answers
  • A circle passes through (3,-1),(-2, 4), and (6,8)
    6·1 answer
  • What's the equation of the line that passes through the points (-7,0) and (-7,8)
    10·2 answers
  • Felicia got a designer job with a company that pay $55,000/year. What is Felicia's gross monthly income
    12·1 answer
  • Jordan bikes 4/3 miles in 1/10 hours. What is his Speed in miles per hour?
    7·1 answer
  • Solve by completing the square: +12x-13=0
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!