3 years ago

Find the value of x (really need help with this)

Mathematics

1 answer:

qwelly [4]3 years ago

4 0

Answer:

x=-7

Step-by-step explanation:

The sum of the angles of a triangle are 180 degrees

40 + x+57 + 90 =180

Combine like terms

187 +x = 180

Subtract 187 from each side

187-187 +x = 180-187

x = -7

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