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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.

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Multiply. Enter your answer in scientific notation.

denis-greek [22]

1.7 x 107 = 181.9
6.9 x 1014 = 6996.6
Then you take both of those answer and do 181.9 x 6996.6 = 127,268,1.54

7 0

4 years ago

The endpoints of a side of rectangle ABCD in the coordinate plane are at A(1, 11) and B(6, 1). Find the equation of the line tha

babymother [125]

the way to answer this is you have find out coordinates of BC and since i cant see the graph im no help. y will equal whatever you can get from there .

8 0

3 years ago

Which fractions are equivalent to 10/12? Select each correct answer. 2/3 5/6 12/24 30/36 50/60 60/84

Yuri [45]

Answer:

[See Below]

Step-by-step explanation:

✦ Turn into decimals:

$\frac{10}{12}=0.83$

$\frac{2}{3} =0.67$

$\frac{5}{6} =0.83$

$\frac{12}{24} =0.5$

$\frac{30}{36} =0.83$

$\frac{50}{60} =0.83$

$\frac{60}{84} =0.71$

So $\frac{10}{12}$ ≈ $\frac{5}{6},\frac{30}{36},and,\frac{50}{60}$ .

~<em>Hope this helps Mate. If you need anything feel free to message me. </em>

4 0

3 years ago

Help meeee with this questionnnnnnnnnn!!!!!!!!!!!!

Dafna1 [17]

Given:

The scale factor between two circles is $\dfrac{2x}{5y}$ .

To find:

The ratio of their areas.

Solution:

We know that, all circles are similar.

The ratio of the areas of similar figures is equal to the ratio of squares of their corresponding sides or equal to the square of ratio of their corresponding sides.

The scale factor is the ratio of the corresponding sides.

Ratio of areas of circles = Square of scale factor between two circles

$\text{Ratio of areas of circles}=\left(\dfrac{2x}{5y}\right)^2$

$\text{Ratio of areas of circles}=\dfrac{(2x)^2}{(5y)^2}$

$\text{Ratio of areas of circles}=\dfrac{4x^2}{25y^2}$

Therefore, the correct option is D.

3 0

3 years ago

How many different ways can an isosceles trapezoid be reflected across a line of symmetry so that it carries onto itself?

lbvjy [14]

Answer:

I'm not positive but I'm pretty sure its infinite

Step-by-step explanation:

idk

7 0

3 years ago