HELP ASAP WHAT IS THIS ANSWER

Mathematics

1 answer:

postnew [5]2 years ago

7 0

Answer:

Step-by-step explanation:

x = 1/2 ( a + b)

x = 1/2 (129 + 71)

x = 1/2 (200)

x = 100 °

you just have to remember that formula

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