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Kay [80]
3 years ago
5

(Help plz)

Mathematics
1 answer:
Aneli [31]3 years ago
3 0

Answer:

86.7 ft²

Step-by-step explanation:

arc area = area of the circle x ( arc angle measure / 360°)

area of the circle = 65 / (270/360) = 86.67 ft²

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The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 5 m
bezimeni [28]

Answer: 0.75

Step-by-step explanation:

Given : Interval for uniform distribution : [0 minute, 5 minutes]

The probability density function will be :-

f(x)=\dfrac{1}{5-0}=\dfrac{1}{5}=0.2\ \ ,\ 0

The probability that a given class period runs between 50.75 and 51.25 minutes is given by :-

P(x>1.25)=\int^{5}_{1.25}f(x)\ dx\\\\=(0.2)[x]^{5}_{1.25}\\\\=(0.2)(5-1.25)=0.75

Hence,  the probability that a randomly selected passenger has a waiting time greater than 1.25 minutes = 0.75

7 0
3 years ago
Write an equation of the ellipse with foci at (0,+12) and vertices at (0,+13)
nekit [7.7K]
 To solve this problem you must apply the proccedure shown below:
 1. You have that the ellipse given as a vertical major axis (a=13), therefore, taking the ellipse with its center at the origin, you have the following equation:
 (y^2/a^2)+(x^2/b^2)=1
 2. You have the distance from the center of the ellipse to the focus:
 c=12, therefore, you can calculate the value of b, the minor radius:
 c^2=a^2-b^2
 b=√(13^3-12^2)
 b=5
 3. Therefore, the equation is:
 a^2=169
 b^2=25
 (y^2/169)+(x^2/25)=1
 The answer is: (y^2/169)+(x^2/25)=1 
6 0
3 years ago
Read 2 more answers
Write the standard form of the line passing through the following points (-5,1) and (0,-5)
Ronch [10]

Answer:

-6/5

Step-by-step explanation:

-5-1 / 0-(-5)

3 0
3 years ago
What is the value of s?3/8 (s 9 ) = −19?
denpristay [2]
S=<span>−<span>1.546727
hope this helps.</span></span>
8 0
3 years ago
Daily fact #1:You can't move your upper teeth.
oee [108]

Answer:

yes

Step-by-step explanation:

yes that is true you are correct

7 0
2 years ago
Read 2 more answers
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