3 years ago

The standard normal distribution has a mean of and a standard deviation of

Mathematics

1 answer:

Anna007 [38]3 years ago

3 0

The standard normal distribution has a mean of 0 and a standard deviation of 1

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Answer:

Speed of first plane is 350 miles per hour

Speed of second plane is 100 miles per hour

Step-by-step explanation:

Let the speed of the second plane be X

Then the speed of the first plane will be 3.5 X

Distance travelled by first plane is 9.5 *X

Distance travelled by second plane is 9.5 * 3.5 X

Difference of distance between the two plane is

$9.5 * 3.5 X - 9.5 *X = 2375\\23.75 X = 2375\\X = 100$ miles per hour

Speed of first plane is 3.5 *100 = 350 miles per hour

Speed of second plane is 100 miles per hour

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3 years ago

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3 years ago

The value for the missing side is

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Step-by-step explanation:

$3\sqrt{5}$

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3 years ago

B^2-4ac would equal: y=2x^2-x-3

motikmotik

Answer:

Step-by-step explanation:

In this equation, ax^2+bx+c, b = -1, a = 2, and c = -3. Solving, (-1)^2 - 4(2)(-3) = 1 - (-24), or 25.

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