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belka [17]
3 years ago
13

if you estimated your sale to be $300 but your actual sale was $345, what was your percent of the increase?

Mathematics
1 answer:
Nat2105 [25]3 years ago
8 0

Answer:

The percentage change from 300 to 375 is 25 %

Step-by-step explanation:

((y2 - y1) / y1)*100 = your percentage change

(where y1=start value and y2=end value)

((375 - 300) / 300) * 100 = 25 %

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What is the estimated margin of error, using standard deviation?
OLEGan [10]
Find the mean ( average):
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Mean = 868 / 8 = 108.5

Standard deviation:
108.5 - 105 = 3.5, 3.5^2 = 12.25
108.5 - 104 = 4, 4^2 = 16
110 - 108.5 = 1.5, 1.5^2 = 2.25
112 - 108.5 = 3.5, 3.5^2 = 12.25
114 - 108.5 = 5.5, 5.5^2 = 30.25
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12.25 + 16 +2.25 + 12.25 + 30.25 +6.25+0.25+0.25 = 79.75
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108.8 +/- 1.96 *(3.1573/sqrt(8) = 110.687 and 106.312

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Margin of error = +/- 2.19



3 0
2 years ago
What is<br>12.5% of 200?​
pantera1 [17]

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Step-by-step explanation:

7 0
3 years ago
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3 years ago
Using the following triangle, what is the cosine of angle B?
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