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
alina1380 [7]
2 years ago
12

Please help me! I don't know this!

Mathematics
1 answer:
schepotkina [342]2 years ago
6 0
Midnight huh ;) C, ray PA and ray PB
You might be interested in
Find the standard deviation for a data set that has a variance of 82.81.
igomit [66]

Answer:

Standard Deviation = 9.1

(Please vote me Brainliest if this helped!)

Step-by-step explanation:

Standard deviation = square root of variance

= \sqrt{82.81} = 9.1

8 0
3 years ago
What % of 80 is 40 <br> show work please
Damm [24]

Answer:

50%

Step-by-step explanation:

40/80 = 0.5.  We multiply this decimal fraction by 100% to obtain the desired percentage:  0.5(100%) = 50%

8 0
2 years ago
Read 2 more answers
Potatoes: Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 9 ounces and a standard deviatio
katrin2010 [14]

Answer: a)  79.10 %           b) 7%                c)19.85 %

Step-by-step explanation:

a) Z = ( × - μ ) ÷ σ           Where  μ mean of population σ standard               deviation Z is the abscissa to give the area or probability we are looking for associated to the value 10 ounces ( × )

So:  Z = ( 10 - 9 ) ÷ 1.2  ⇒ Z = 1/1.2 ⇒   Z = 0.83  it has to be below this value

From Z tables we get  P [ Z ≤ 0.82 ] = 0.7910  0r  79.10 %

b) Following the same procedure: We look for

P [ Z > ( x - μ ) ÷   σ ]    ⇒   Z  =  ( 12 -10 ) ÷ 1.2  = 2.5

From Z table we get the area under the curve from the left tail up to the point Z < 2.5 ( 2.5 not included) but we were asked for the area out of that previous so 1- 0.9930 = 0.007 is the area we are looking for

So P (b) = 0.007  or 7 %

Finally between the two points above mentioned ( 10 ≤  Z  ≤ 12 ) we use the previous values (taking in consideration the limits, according to the problem statement )

Z ≤ 10     Z ⇒( 10-9  ) ÷ 1.2   Z = 0.7967

Z ≥ 12     Z ⇒ ( 12 - 9 ) ÷ 1.2  Z = 0.9952

The interval is between these two points

0.9952 - 0.7967 = 0.1985   ⇒ or 19.85 %

The attached help in the understanding of the solution

                               

5 0
3 years ago
The land area of the earth is 57,505,708 square miles. To the nearest tenth, how much longer is the land of Asia than North Amer
Leokris [45]

Answer:

57,505,708 x .165 =9488441.82 NA

57,505,708 x .3 = 17251712.4  Asia

17251712.4  - 9488441.82 = 7763270.58

That's how much larger asia is than north america

Step-by-step explanation:

8 0
3 years ago
Please help me in this question
Marrrta [24]

Answer:

option c

Step-by-step explanation:

option c is right..

3 0
2 years ago
Other questions:
  • Calculator Active
    8·1 answer
  • If someone is getting paid $29000 annually how much is that person making hourly?
    8·1 answer
  • How many real roots does he function f(x)=x^2+8x-2 have?<br><br> A 0<br> B 1<br> C 2<br> D 72
    12·1 answer
  • The area of a square is 144 square feet. What is the length of each of its sides?
    10·1 answer
  • A community hall is in the shape of a cuboid.
    5·1 answer
  • You buy a sweater for $32, which is 30% off the original price. what was the original price?
    5·1 answer
  • Urgent!!!<br> What is the missing angle?
    5·2 answers
  • The product of 9 and the difference of four and a number​
    10·1 answer
  • Find the value of X in the figure shown
    6·1 answer
  • Construa a matriz B=(bij)2×4 definida por <br>Bij= 1, se i=j <br> i+j, se i≠j​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!