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
alisha [4.7K]
3 years ago
10

I need to know the answer for 19,20,21

Mathematics
1 answer:
pantera1 [17]3 years ago
7 0
19. $30,681.82
20. Find surface area for this one
21. Use geometry
You might be interested in
Marlon took a total of 12 pages of notes during 3 hours of class. After attending 4 hours of class, how many total pages of note
elena-14-01-66 [18.8K]
I think it’s 28 I’m not sure
5 0
3 years ago
A geography teacher shares 18 maps equally between 8 students. The number of maps that each student gets lies between what two w
Serga [27]
I believe it is 2 and 3.
8 0
3 years ago
What is the next term in the sequence 58, 47, 36, 25, ...
Triss [41]

Answer:

14

Step-by-step explanation:

subtracting by 11 gets you 14

3 0
3 years ago
Read 2 more answers
Find the distance between the points with the given coordinates (-2, -5) and (-2, 4).
bija089 [108]
I hope this helps you

6 0
3 years ago
Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed with mean 2.65
erma4kov [3.2K]

Answer:

Probability that the sample average is at most 3.00 = 0.98030

Probability that the sample average is between 2.65 and 3.00 = 0.4803

Step-by-step explanation:

We are given that the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed with mean 2.65 and standard deviation 0.85.

Also, a random sample of 25 specimens is selected.

Let X bar = Sample average sediment density

The z score probability distribution for sample average is given by;

               Z = \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \mu = population mean = 2.65

           \sigma  = standard deviation = 0.85

            n = sample size = 25

(a) Probability that the sample average sediment density is at most 3.00 is given by = P( X bar <= 3.00)

    P(X bar <= 3) = P( \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } <= \frac{3-2.65}{\frac{0.85}{\sqrt{25} } } ) = P(Z <= 2.06) = 0.98030

(b) Probability that sample average sediment density is between 2.65 and 3.00 is given by = P(2.65 < X bar < 3.00) = P(X bar < 3) - P(X bar <= 2.65)

P(X bar < 3) = P( \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } < \frac{3-2.65}{\frac{0.85}{\sqrt{25} } } ) = P(Z < 2.06) = 0.98030

 P(X bar <= 2.65) = P( \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } <= \frac{2.65-2.65}{\frac{0.85}{\sqrt{25} } } ) = P(Z <= 0) = 0.5

Therefore, P(2.65 < X bar < 3)  = 0.98030 - 0.5 = 0.4803 .

                                                                             

8 0
3 years ago
Other questions:
  • A couple plans to have four children. Using a tree diagram , obtain the sample space. List the elements that make up the sample
    15·1 answer
  • Use the distributive property to remove the parentheses. −6(−y+3v−5)
    6·2 answers
  • What is the simple interest on $360 borrowed for 30 months at 12.3%
    6·1 answer
  • Relationship B has a greater rate than Relationship A. This graph represents Relationship A.
    8·1 answer
  • If x&gt;3, which of the following is equivalent to <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B%5Cfrac%7B1%7D%7Bx%2B2%7D%
    6·2 answers
  • The sum of twice a number n and 8 at most 25
    14·1 answer
  • What is the solution to the system of equations? y=3x+1 y=-2x-4
    12·2 answers
  • 8. Does the equation show a proportional relationship?<br> y = x + 9<br> O Yes<br> O No
    15·1 answer
  • Work out the sizes of each unknown exterior angle in this polygon
    9·1 answer
  • If y = x 2 - 4 is being graphed using the table method, what is the y-value generated when x = - 2 ?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!