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Mazyrski [523]
3 years ago
13

74° X +85 33° A) 4 C) -12 B) -5 D) -11

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
6 0

74+x+85+33= 180 (bc the sum of the angles of a triangle is 180º)

192=180-x

192-180=-x

12=-x

-12=x

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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 help plzzzz percent equations blank% of $30 =3
Lyrx [107]

Answer:

10%

Step-by-step explanation:

Hello I can help you with this question. Lets start.

The question is asking what percent of $30 is 3

so i think u actually meant $3 right but anyways

30 is 10 times 3

then clearly it would be 10%

gogo that's the answer!

4 0
3 years ago
Helppppppppppppppppppppppppp
lawyer [7]

Answer:

200

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Can someone help me...?
miv72 [106K]
1. (x, y) = (7, -12)

2. x = 1, x = 2 are both solutions

8 0
3 years ago
Sino grade 9 dito? send answer sendan din kita ng wala sayo​
nasty-shy [4]

Answer:

meeeeeeeeeeeeeeeeeee!!!¡

Step-by-step explanation:

ako putekkkkk

8 0
3 years ago
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