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artcher [175]
3 years ago
11

Please help me I need this fast

Mathematics
2 answers:
nignag [31]3 years ago
8 0

Answer:

110°

Step-by-step explanation:

180° in a triangle

180 - 80 - 30 = 70

180° on a straight line

180 - 70 = 110

exterior angle 110°

Minchanka [31]3 years ago
4 0
100 degrees I think....

I’m writing this because it said it was too short
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Please help me out............................
Alina [70]

Answer:

<h2>b = 15°</h2>

Step-by-step explanation:

If Pq = RQ then ΔPQR is the isosceles triangle. The angles QPR and PRQ have the same measures.

We know: The sum of the measures of the angeles in the triangle is equal 180°. Therefore we have the equation:

m∠QPR + m∠PRQ + m∠RQP = 180°

We have

m∠QPR = m∠PRQ and m∠RQP = 60°

Therefore

2(m∠QPR) + 60° = 180°       <em>subtract 60° from both sides</em>

2(m∠QPR) = 120°           <em>divide both sides by 2</em>

m∠QPR = 60° and m∠PRQ = 60°

Therefore ΔPRQ is equaliteral.

ΔPSR is isosceles. Therefore ∠SPR and ∠PRS are congruent. Therefore

m∠SPR = m∠PRS

In ΔAPS we have:

m∠SPR + m∠PRS + m∠RSP = 180°

2(m∠SPR) + 90° = 180°            <em>subtract 90° from both sides</em>

2(m∠SPR) = 90°             <em>divide both sides by 2</em>

m∠SPR = 45° and m∠PRS = 45°

m∠PRQ = m∠PRS + b

Susbtitute:

60° = 45° + b           <em>subtract 45° from both sides</em>

15° = b

3 0
3 years ago
I need this answer asap
antoniya [11.8K]

Answer:

240

Step-by-step explanation:

5 0
3 years ago
How does knowing the earth’s radius help us in life??
Nadya [2.5K]

Answer:

nfiuwrhiwewdjvv

Step-by-step explanation:

thats why

5 0
3 years ago
What is the y-value of the vertex of the function f(x)=-(x-3)(x+11)?<br> -8<br> оооо
tigry1 [53]

Answer:

49

Step-by-step explanation:

desmos is extremely helpful! :)

hope I could help

7 0
3 years ago
What is the sum of 7/22 and 9/22
natulia [17]
 when u have a common a denominator then you just add the numerator that would be 7 and 9. 7 + 9= 16
so ur solution would be 16/22 and then u would simplify by dividing both values by 2.
so the solution is8/11
8 0
3 years ago
Read 2 more answers
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