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3 years ago

What is the height of the trapezoid?

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

6 0

Isnt it 4 its big as day but wait what are the answer choices

Nataly [62]3 years ago

5 0

I am pretty sure the height is 4, but sorry if i am wrong

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If a time series plot exhibits a horizontal pattern, then

gogolik [260]

Answer: C. there is still not enough evidence to conclude that the time series is stationary.

Step-by-step explanation: First thing to note for a time series plot is that it is required to select a suitable forecast method for the data set being considered.

A stationary time series means that the process generating the data set has a constant mean and the variations are constant over time. This means all evidence is present leading to the conclusion that the entire time series is stationary. A stationary time series thus exhibits an horizontal pattern which enables an appropriate forecast method to be selected for this type of pattern.

A horizontal pattern of a time series plot indicates that a data set fluctuates around a constant mean for a period of time. This period of time may however not be the entire time of the time series or take the entire data set into consideration and might just be a reflection of a portion of the time series hence why it can not be explicitly considered to be stationary. This means that a horizontal pattern can change into a seasonal or trending pattern if more variables/data are added over time.

For instance, a manufacturer sells a certain amount of products over a 10 week period and the resulting pattern of a time series plot is horizontal, then from the 11th week to the 15th week he gets a sharp and continuous increase in sales. This change in level will therefore change the time series plot from horizontal to trending making it more difficult to select a suitable forecast method.

6 0

3 years ago

erastova [34]

Answer:

its a

Step-by-step explanation:

Ive had this question before

5 0

2 years ago

Sheila predicts that 480 people will attendthe fall concert. There was an actual total of 350 people who attended the fall conce

iris [78.8K]

Answer:

27 %

Step-by-step explanation:

Given that Sheila predicts that 480 people will attendthe fall concert and There was an actual total of 350 people who attended the fall concert.

We know that

Percent error = $\frac{people present-predicted people}{predicted people}\times100$

Percent error = $\frac{480-350}{480}\times100$

Percent error = 27 %

5 0

3 years ago

if two pyramids are similar and the ratio between the lengths of their edges is 2;7 what is the ratio of their volumes? ...?

jok3333 [9.3K]

The answer is 8:343.

We can use Galileo's square cube law to calculate the ratio between two similar pyramids. The law is used to describe the change of the area or the volume of the shape when their dimensions increase or decrease:
$\frac{V_1}{V_2} =( \frac{l_1}{l_2} )^{3} \\$ 
 
V₁ and V₂ - volumes of pyramids,
l₁ and l₂ - the edges of pyramids.

 $\frac{V_1}{V_2} =( \frac{l_1}{l_2} )^{3} \\ \frac{V_1}{V_2} =( \frac{2}{7} )^{3} \\ \frac{V_1}{V_2} = \frac{2^{3}}{7^{3}} \\ \frac{V_1}{V_2} = \frac{8}{343} \\$

3 0

3 years ago

Read 2 more answers

Can someone do d) and e) for me please !! due soon

Arlecino [84]

Step-by-step explanation:

sorry I was only able to solve E

I hope it helps

the answer is in the image above

5 0

3 years ago