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2 years ago

Please helpppppp

Mathematics

2 answers:

Nadya [2.5K]2 years ago

6 0

(9x+1)=(7x+13)
2x+1=13
2x=12
x=6

7(6)+13
42+13
55

180-55
125
y= 125°

andre [41]2 years ago

3 0

Answer:

x = 6

y° = 125°

Step-by-step explanation:

9x + 1 and 7x + 13 are alternate angles and has same measurement

9x + 1 = 7x + 13

9x - 7x = 13 - 1

2x = 12

x = 6

y° and 7x + 13 are supplementary angles so their sum is 180°

7x + 13 ➡ 7×6 + 13 = 55°

55 + y° = 180 subtract 55 from both sides

y° = 125°

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