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kolbaska11 [484]
2 years ago
11

Pls help me I don’t know

Mathematics
2 answers:
pochemuha2 years ago
8 0

All angles of a triangle sums up to 180 degrees

a° = 3a + 90 = 180°

   3a = 180 - 90

   3a = 90

     a = 90÷3

     a = 30°

b = 180-(25+90)

b = 180 - 115

b = 65°

<em><u>PLEASE MARK THIS ANSWER THE BRAINLIEST</u></em>

Ede4ka [16]2 years ago
6 0

Answer:

b= 65 a=25 and 2a=32.5

Step-by-step explanation:

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Tickets to a concert cost $2 for children, $3 for teenagers and $5 for adults. When 570 people attended the concert, the total t
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                                    z = 220


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