3 years ago

I need a lot of questions answered, I'm sorry!

Mathematics

1 answer:

Rashid [163]3 years ago

4 0

1.3272
2.23.1
3.384
4.13.5
9.2.4
Sorry I dont know the rest but i hope i helped.

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Los Angeles is about 385 miles from San Francisco. How far apart would the cities be on a map with a scale of 1 in. = 25 mi? If

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the diameters of Douglas firs grown at a Christmas tree farm are normally distributed with a mean of 4 inches and a standard dev

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Answer:

Proportion of the trees will have diameters between 2 and 6 inches = 0.8164

Step-by-step explanation:

Given -

Mean $(\nu )$ = 4

Standard deviation $(\sigma )$ = 1.5

Let X be the diameter of tree

proportion of the trees will have diameters between 2 and 6 inches =

$P(2< X< 6)$ = $P(\frac{2 - 4 }{1.5}< \frac{X - \nu }{\sigma}< \frac{6 - 4 }{1.5})$

= $P(\frac{-2 }{1.5}< Z< \frac{2 }{1.5})$ Put [ $Z = \frac{X - \nu }{\sigma}$ ]

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= $(Z< 1.33) - (Z< -1.33)$

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4 years ago

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3 years ago

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Consider this quadratic equation:

zhenek [66]

Answer:

a=2

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Step-by-step explanation:

The standard form of a quadratic equation is ax²+bx+c=0

Here's the given equation:

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You might notice that the term bx is not there (there is just ax² and c). That means that b is 0.

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Step-by-step explanation:

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