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svp [43]
3 years ago
6

A quadrilateral has three angles which measure 23.5 degrees, 99 degree, and 100.4 degrees. What is the measure of the fourth ang

le?
Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
7 0
Quadrilaterals always have a total of 360°.  Because of this fact, we can find the 4th angle by subtracting 23.5, 99, and 100.4 from 360.  This is equal to 360 - (23.5 + 99 + 100.4) = 137.1.  So, the fourth angle is 137.1°.


Schach [20]3 years ago
3 0
I think it would be 137.1, due to the total being 360. Just subtract.
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Step-by-step explanation:

12 / v....when v = 2

12 / 2 = 6 <==

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Lunch break: In a recent survey of 655 working Americans ages 25-34, the average weekly amount spent on lunch was $43.5
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Using the Empirical Rule, it is found that:

  • a) Approximately 99.7% of the amounts are between $35.26 and $51.88.
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The Empirical Rule states that, in a <em>bell-shaped </em>distribution:

  • Approximately 68% of the measures are within 1 standard deviation of the mean.
  • Approximately 95% of the measures are within 2 standard deviations of the mean.
  • Approximately 99.7% of the measures are within 3 standard deviations of the mean.

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Item a:

43.5 - 3(2.77) = 35.26

43.5 + 3(2.77) = 51.88

Within <em>3 standard deviations of the mean</em>, thus, approximately 99.7%.

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Item b:

43.5 - 2(2.77) = 38.03

43.5 + 2(2.77) = 49.11

Within 2<em> standard deviations of the mean</em>, thus, approximately 95%.

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Item c:

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43.5 - 2.77 = 40.73

43.5 + 2.77 = 46.27

Approximately 68% of the amounts fall between $40.73 and $46.27.

A similar problem is given at brainly.com/question/15967965

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