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Illusion [34]
3 years ago
15

25% of what number is 21

Mathematics
2 answers:
Sergio [31]3 years ago
8 0
21 is 25% of 84.......
makkiz [27]3 years ago
3 0
84 because 21 times 4 equals 84
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The marketing manager of a tourist company wants to be able to predict the number of calls to a toll free number asking for pamp
katrin [286]

Answer:

multiple regression

Step-by-step explanation:

In the field of statistics, the multiple regression is the statistical technique which uses the various explanatory variables for predicting the outcome of the response variable. It is the extension of the simple linear regression. It explains the relation between the multiple predictor variables or independent variables and one dependent variable or criterion variable.

In the context, the manager of a tourist company predicting the number of calls to the toll free number is using the statistical technique of multiple regression.

5 0
3 years ago
Suppose that a jewelry store tracked the amount of emeralds they sold each week to more accurately estimate how many emeralds to
Ratling [72]

Answer: point estimate = 3.88

Margin of error = 0.63

Step-by-step explanation:

Confidence interval is written in the form,

(Point estimate - margin of error, Point estimate + margin of error)

The sample mean, x is the point estimate for the population mean. Let m represent the margin of error. Since the confidence interval is given as (3.25 , 4.51), it means that

x - m = 3.25

x + m = 4.51

Adding both equations, it becomes

2x = 7.76

x = 7.76/2

x = 3.88

Substituting x = 3.88 into x + m = 4.51, it becomes

3.88 + m = 4.51

m = 4.51 - 3.88

m = 0.63

8 0
2 years ago
A gas company charges $0.4544 for each therm used. A home used 39.3 therms in a month. How much will the gas company charge that
podryga [215]

Answer:

$17.85792

Step-by-step explanation:

$0.4544 x 39.3 = $17.85792

7 0
2 years ago
When a sunfloweris 2 weeks old it is 38 centimeters tall when it is 6 weeks old it is 114 cm tall how tall is it when it is 3 ½
Anna11 [10]
2 wk --- 38 cm
3.5 wk --- x cm
x =  3.5 wk x 38 cm
       ---------------------
       2 wk
x= 66.5 cm
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3 years ago
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masha68 [24]
The third option has the highest value
3 0
3 years ago
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