Ask question

Ask question

All categories

3 years ago

12

The distance between major cracks in a highway follows an exponential distribution with a mean of four miles. (a) what is the st

andard deviation of the distance between two major cracks

1 answer:

Lesechka [4]3 years ago

7 0

For an exponential distribution, the standard deviation is equal to the mean.

(a) the standard deviation is 4 miles.

You might be interested in

___% of 50 = 75<br> Other way of writing it: What percent of 50 is 75?

djverab [1.8K]

What percent - x / 100
of - * multiply
50
is - = equals
75

$\frac{x}{100}*50 = 75$

50x = 7500
x=150

150% of 50 is 75.

3 0

3 years ago

Read 2 more answers

A two digit number is chosen at random. Find the probality that the number is a perfect square

Novay_Z [31]

Answer:

5 by 99

Step-by-step explanation:

its 5 by 99

squares:

16

25

36

49

64

81

7 0

3 years ago

Read 2 more answers

If the circumference of a circle measures 3/4 π cm, what is the area of the circle in terms of π?

Vinil7 [7]

$\bf \textit{circumference of a circle}\\\\
C=2\pi r~~
\begin{cases}
r=radius\\
-----\\
C=\frac{3\pi }{4}
\end{cases}\implies \cfrac{3\pi }{4}=2\pi r
\\\\\\
\cfrac{3\pi }{4(2\pi )}=r\implies 
\boxed{\cfrac{3}{8}=r}\\\\
-------------------------------\\\\
\textit{area of a circle}\\\\
A=\pi r^2\qquad \qquad \implies A=\pi \left( \boxed{\frac{3}{8}} \right)^2\implies A=\pi \left( \cfrac{3^2}{8^2} \right)
\\\\\\
A=\cfrac{9\pi }{64}$

5 0

3 years ago

Please help me it would be helpful

Vitek1552 [10]

Adam has a greater rate of change, as seen by the larger slope. This means Adam is traveling faster than Katia.

5 0

3 years ago

Julie ran a race 2 minutes faster then Teri did. If Julie ran the race in 28 mins, which equation can be used to find the number

Lynna [10]

Answer:(28)+2

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers