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ruslelena [56]
3 years ago
14

Does anybody know how to solve this? (Click for full picture if it doesn’t show up)

Mathematics
2 answers:
Semenov [28]3 years ago
5 0

Step-by-step explanation:

angle A = 38

now come with me inside the triangle ABC

use two property of isoceles traingle and sum of angles of triangle

you get x= 71°

zavuch27 [327]3 years ago
5 0

Answer:

x = 71°

Step-by-step explanation:

Notice that angle D is the inscribed angle of arc BC. By definition of inscribed angles, the measure of an arc's inscribed angle is half the measure of the arc. Also we see that angle A is the central angle of arc BC. By definition, the central angle measure is equal to the arc measure.

Here, ∠D = 19, which means arc BC = 19 * 2 = 38°. Then, that means ∠A = 38.

Notice that ABC forms a triangle and remember that all the angles of a triangle add up to 180°. Since ΔABC is isosceles, we know that the base angles are congruent, so let's say they're both x. Since ∠A = 38°, ∠B = ∠C = x, we can add them up to get 180:

∠A + ∠B + ∠C = 180

38 + x + x = 180

38 + 2x = 180

2x = 142

x = 142/2 = 71

Thus, x = 71°.

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Answer:

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Step-by-step explanation:

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6 0
2 years ago
Write an equation of the line that passes through (2,−5) and is parallel to the line 2y=3x+10.
r-ruslan [8.4K]

Step-by-step explanation:

the eqn is 3x-2y+10=0

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8 0
3 years ago
Ali wrote this first step in how to add 27 12 on a hundred chart
lina2011 [118]
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5 0
3 years ago
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hichkok12 [17]

Answer:

18 = x

Step-by-step explanation:

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+8          + 8

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Sorry if I'm incorrect...

3 0
3 years ago
Read 2 more answers
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