yivsokh yivsokh
  • 15-12-2020
  • Mathematics
contestada

Help

Please help find b

Help Please help find b class=

Respuesta :

evgeniylevi
evgeniylevi evgeniylevi
  • 15-12-2020

Answer:

70°

Step-by-step explanation:

1. the rule is: m(∠1)+m(∠2)+m(∠3)=180°.

2. the substitution according to the rule above:

b+2b-90+b-10=180;

4b=280;

b=70°

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Ana1234567810 Ana1234567810
  • 15-12-2020
It’s 70 degrees . I hope that helps if it doesn’t, send me a message
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