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ELEN [110]
3 years ago
9

How do i solve this? will give brainliest

Mathematics
1 answer:
Citrus2011 [14]3 years ago
8 0

Answer:

n=-2c/p +2/p

Step-by-step explanation:

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A new smart phone is on sale. the regular price is $400. the sale price is $250. find the discount rate.
joja [24]
I got 0.625% but if it has to be rounded which I'm pretty sure it does then the answer is 63% so go for 63%... hope that helped
5 0
3 years ago
Which of the following summary measures for forecast errors does not depend on the units of the forecast variable? a. MFE (mean
Orlov [11]

Answer:

d. The mean absolute percentage error (MAPE) does not depend on the units of the forecast variable.

Step-by-step explanation:

A forecast error is the difference between the actual or real and the predicted or forecast value of a time series or any other phenomenon of interest. Here “error” does not mean a mistake, it means the unpredictable part of an observation.

There are many different ways to summarize forecast errors in order to provide meaningful information.

Scale-dependent errors. The forecast errors are on the same scale as the data. The two most commonly used scale-dependent measures are based on the absolute errors or squared errors:

\begin{align*}  \text{Mean absolute error: MAE} & = \text{mean}(|e_{t}|),\\  \text{Root mean squared error: RMSE} & = \sqrt{\text{mean}(e_{t}^2)}.\end{align*}\text{Mean absolute error: MAE} & = \text{mean}(|e_{t}|),\\  \\\text{Root mean squared error: RMSE} & = \sqrt{\text{mean}(e_{t}^2)}.

Percentage errors. Percentage errors have the advantage of being unit-free, and so are frequently used to compare forecast performances between data sets. The most commonly used measure is:

\text{Mean absolute percentage error: MAPE} = \text{mean}(|p_{t}|).

6 0
3 years ago
Can someone help me pleaaaaaaaaaaaaase
san4es73 [151]

Answer:

x=4y-284

Step-by-step explanation:

Hope this helped!!!

8 0
3 years ago
Place the following expressions in order from least to greatest based on the differences. = -6 = (-8) -1.9 = 4.3 2.5. - 8​
aksik [14]

Answer:

yes

Step-by-step explanation:

reddit karma

7 0
3 years ago
In a survey, the ratio of the number of people who preferred tea to those who preferred coffee was 9:5
kodGreya [7K]

Answer:

45 people prefered coffee, 81 people prefered tea. A total of 126 people were surveyed.

Step-by-step explanation:

Let t be the people who prefer tea, and let c be the people who prefer coffee.

The ratio between tea and coffee is 9:5, thus we have t/c=9/5. Cross products  give us 5t=9c.

Also, we have 36 more people prefer tea than coffee, so we have c+36=t

Thus we have: 5(c+36)=9c

5c+180=9c

180=4c

c=45

c+36=t

45+36=81

5 0
4 years ago
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