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Firlakuza [10]
2 years ago
7

Does anyone know the answer to this?!

Mathematics
2 answers:
devlian [24]2 years ago
8 0

Answer:

65°

Step-by-step explanation:

<u>Properties of a triangle:</u>

  • Triangles always have 3 sides
  • <u><em>The sum of the interior angles of a triangle must be equal to 180°.</em></u>

<u>To solve:</u>

  • <u>Since the angles inside of a triangle must always be equal to 180, use the following formula to solve:</u>
  • <em>a</em> + <em>b</em> +<em> c</em> = 180
  • (The variables can be assigned to any value in this situation)
  • <u>Since two angles are already given, replace 2 variables:</u>
  • <em>a</em> + 85 + 30 = 180
  • <u>Solve the equation by subtracting on both sides:</u>
  • <em>a</em> = 65
  • The value of <em>a</em> is the measure of the missing angle. The problem is solved.
dangina [55]2 years ago
8 0

Answer:

the missing angle is 65

Step-by-step explanation:

a whole triangle is 180

subtract the given angles from 180

<em>   180</em>

<em>-   85</em>

<em>----------</em>

<em>    95</em>

subtract the remaining angle

<em>   95</em>

<em>-  30</em>

<em>---------</em>

<em>   65</em>

<em>~hope this helped :3~</em>

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
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Ymorist [56]

Answer:

We want to verify if the true proportion of the alumni provide monetary contributions is higher than 0.15 (Alternative hypothesis), the system of hypothesis are.:  

Null hypothesis:p \leq 0.15  

Alternative hypothesis:p > 0.15  

And the best answer for this case would be:

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Step-by-step explanation:

Information given

n=250 represent the random sample taken

X=40 represent the number of people on the alumni mailing list

\hat p=\frac{40}{250}=0.16 estimated proportion of people on the alumni mailing list  

p_o=0.15 is the value to verify

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to verify if the true proportion of the alumni provide monetary contributions is higher than 0.15 (Alternative hypothesis), the system of hypothesis are.:  

Null hypothesis:p \leq 0.15  

Alternative hypothesis:p > 0.15  

And the best answer for this case would be:

Ha: p > 0.15

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