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Reil [10]
2 years ago
13

Whoever answers first ill mark brainlist

Mathematics
2 answers:
aivan3 [116]2 years ago
8 0

Answer:

∠S = 19°

Step-by-step explanation:

Since all angles in a triangle add up to 180°, we must first find how much is left.

<em>180 - 142 = 38</em>

And since we know that the two lines are congruent, we know that the two other angles will be the same. So we divide the remaining by 2

<em>38 ÷ 2 = 19</em>

So both other angles are 19° meaning that ∠S is 19°

Hope this was helpful!

Nuetrik [128]2 years ago
3 0

Answer: m∠S = 19°

Step-by-step explanation:

    We know the angles of a triangle add up to 180° (and if you don't, you do now)

-> We are given one angle, 142°

-> We are given the fact this is an isosceles triangle, or one with two congruent sides

    [] This means the other two angles are congruent

-> Taking this information, we will set up an equation to solve for x

180° = 142° + 2x°

38° = 2x

19° = x

x = 19°

x = m∠S, so m∠S = 19°

          m∠S = 19°

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Step-by-step explanation:

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3 years ago
Which system of equation should you use to solve this problem
Alex17521 [72]

Last option is the correct answer.

Step-by-step explanation:

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Keywords: Equations, Variables

Learn more about linear equations at:

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#LearnwithBrainly

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anastassius [24]

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Step-by-step explanation:

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