3 years ago

I NEED HELP!! pleaseee

Mathematics

1 answer:

Veronika [31]3 years ago

4 0

Answer:

Step-by-step explanation:

line RPN = 180 = 4y - 10 + 90 + y

180 - 90 + 10= 5y

100 = 5y

y = 100/5

y = 20

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