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julia-pushkina [17]
3 years ago
7

Find the values of x and y in the diagram.

Mathematics
1 answer:
Assoli18 [71]3 years ago
8 0

Answer:

x = 18

y = 6

Step-by-step explanation:

In triangle UTR, measures of all angles are equal (60°). (given)

Therefore, it is an equilateral triangle.

So, it's sides will also be equal.

In triangle TRS, m angle T = m angle S

So, RT = RS = 11 (sides opposite to the equal angles are equal)

In triangle URT,

UT = RT (sides of equilateral triangle)

x - 7 = 11

x = 11 + 7

x = 18

In triangle TRS,

m angle T = m angle S = 5y°

m angle R = 180° - 60° = 120° (Linear pair angles)

5y° + 5y° + 120° = 180°

10y° = 180° - 120°

10y° = 60°

y = 60/10

y = 6

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Choice A is the answer

Focus on the stem and leaf plot
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So the data values are: 1.5, 1.5, 1.6, 2.1, 2.1, 2.1, 3.5, 3.6

Side Notes:
We can rule out choice B because 3.7 is not a data value (there is no "7" anywhere in the leaves)
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