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3 years ago

Which fraction is equivalent to negative 7 over 8 ? (1 point)

Mathematics

2 answers:

Alja [10]3 years ago

6 0

The answer is -7/8\= 7/-8 Thank you!

melomori [17]3 years ago

4 0

Answer:

7/-8

Step-by-step explanation:

i did the FLVS test

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211,207,203,... Find the 38th term.

dsp73

Answer:

Step-by-step explanation:

Using the formula attached, we can setup the equation:

$211 + (38 - 1) - 4$

Then using a calculator you can solve

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2 years ago

Evaluate O! + 1!. a. 1 b. 2

ss7ja [257]

Answer:

0! = 1

1! = 1

0! + 1! = 1 + 1 = 2

4 0

3 years ago

I’m confused on this one

Murrr4er [49]

This one is a bit confusing without a diagram anyway. We'll assume the typical labeling where A and B are consecutive angles, so the transverse line AB through the parallels makes A and B supplementary:

A + B = 180 degrees

12x + 46 + 7x + 1 = 180

19x = 180 - 47 = 133

x = 133/19 - 7

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3 years ago

What is contour integral

MrMuchimi

Contour integration is a method of evaluating certain integrals along paths in the complex plane.

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3 years ago

Mopeds (small motorcycles) are very popular in Europe because of their mobility, ease of operation, and low cost. An article2 de

Misha Larkins [42]

Answer:

a) $P(X$

And we can find this probability using the normal standard table:

$P(z$

b) $P(X>48)=P(\frac{X-\mu}{\sigma}>\frac{48-\mu}{\sigma})=P(Z>\frac{48-46.8}{1.75})=P(Z>0.686)=1-P(z$

And we can find this probability using the normal standard table and the complement ruel:

$P(Z>0.686)=1-P(z$

c) $P(46.8-1.5*1.75$

And we can find this probability with this difference:

$P(-1.009$

And in order to find these probabilities we can use the tables for the normal standard distribution, excel or a calculator.

$P(-1.009$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Assuming the following questions:

Part a: What is the probability that the maximum speed is at most 50 km/h?

Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

$X \sim N(46.8,1.75)$

Where $\mu=46.8$ and $\sigma=1.75$

We are interested on this probability

$P(X$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(X$

And we can find this probability using the normal standard table:

$P(z$

Part b: What is the probability that maximum speed is at least 48 km/h?

$P(X>48)=P(\frac{X-\mu}{\sigma}>\frac{48-\mu}{\sigma})=P(Z>\frac{48-46.8}{1.75})=P(Z>0.686)=1-P(z$

And we can find this probability using the normal standard table and the complement ruel:

$P(Z>0.686)=1-P(z$

Part c:What is the probability that maximum speed differs from the mean value by at most 1.5 standard deviations?

$P(46.8-1.5*1.75$

And we can find this probability with this difference:

$P(-1.009$

And in order to find these probabilities we can use the tables for the normal standard distribution, excel or a calculator.

$P(-1.009$

6 0

3 years ago