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
andrew-mc [135]
3 years ago
11

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 49.0 and 54.

0 minutes. Find the probability that a given class period runs between 50.75 and 51.75 minutes.
Find the probability of selecting a class that runs between and minutes.
Mathematics
1 answer:
Pie3 years ago
8 0

Answer:

0.2

Step-by-step explanation:

Write a proportion.

(54.0 − 49.0) / 1 = (51.75 − 50.75) / x

5 = 1 / x

x = 0.2

You might be interested in
If f(x)=3x+2,find f(f^-1(14)).
lisov135 [29]

Answer:  14

<u>Step-by-step explanation:</u>

f(x) = 3x + 2

To find f⁻¹, swap the x's and y's and solve for y --> Note: f(x) is y

x = 3y + 2

x - 2 = 3y

\dfrac{x-2}{3}=y

\implies f^{-1}(x)=\dfrac{x-2}{3}

\implies f^{-1}(14)=\dfrac{14-2}{3}

\implies f^{-1}(14)=\dfrac{12}{3}

\implies f^{-1}(14)=4

f(f⁻¹(14)) = f(4)

              f(4) = 3(4) + 2

                     = 12 + 2

                     = 14

NOTE: the simplified version is .... f and f⁻¹ cancel out, leaving you with 14

4 0
3 years ago
What is the perimeter of this tile 4in 1in
UNO [17]

Answer:

10 inches

Step-by-step explanation:

Assuming a rectangular tile

P = 2(l+w) where l is the length and w is the width

P = 2(1+4)

   = 2(5)

   = 10 inches

8 0
3 years ago
What is the value of 128x3/7 as a whole number ?
UNO [17]

Answer:

<u><em>54.86 or 55, rounded to a whole number</em></u>

Step-by-step explanation:

(128*3) = 384

384/7 = 54.86

This is not a whole number

6 0
2 years ago
Frequent food questionnaires (FFQ) are a simple way to obtain information on the foods individuals consume by asking them questi
Ilia_Sergeevich [38]

Answer:

Asnwer is A

Step-by-step explanation:

since the correlation between the FFQ and DR is 0.89

      x                            y               xy                    x^{2}                            y^{2}

    8.26                      1.68          13.8768          68. 2276          2.8224

     0.83                      0               0                    06889                  0

     20.13                   15.1           303.963          405.2169          228.01

      11.16                   7.49          83.5884          124.5456           56.1001

      7.18                    12.84         92.1912            51.5524            164.8656

       1.76                       0                0                   3.0976                 0

     22.46                  25.06        567.8596        513.4756           628.0036

-----------------------------------------------------------------------------------------------------------

       ∑x_{i} =                 ∑y_{i} =              ∑x_{i} y_{i}=               ∑x_{i}^{2} y_{i}^{2}=             ∑y_{i} ^{2}=      

      71.98                   62.17         1061.479            1166.8046      1079.8017  

-------------------------------------------------------------------------------------------------------------

Correlation Coefficient or Pearson Correlation is given by:  

the rest calculation is in the attached image

3 0
3 years ago
How much would $300 invested at 7% interest compounded continuously be
Paha777 [63]
The correct awnser would be B because it is the only one rounded to the nearest cent
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which type of function grows the slowest? linear quadratic exponential
    14·1 answer
  • Job A pays $32,448 per year. How much would Job A pay per hour based on a 52 weeks working 40 hours per week?
    6·1 answer
  • Find the value of x pls thank you for helping me !!!!!
    11·1 answer
  • Does anyone know the answer?
    10·2 answers
  • X+y/3 =5 solve for x
    13·2 answers
  • The diameter of a circle is 2 inches. What is the circle's circumference? d=2 in
    7·1 answer
  • Would you rather
    14·1 answer
  • 7070
    10·1 answer
  • Pls give me the answer only if you know! Thanks!
    8·1 answer
  • Salazar assigns the same number of homework questions each school day. The ratio table below shows the total number of homework
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!