3 years ago

Need help with this?

Mathematics

2 answers:

Julli [10]3 years ago

7 0

Answer:

It's b, 45 degrees

Step-by-step explanation:

1) 180-90 = 90

20 90 divided by 2 = 45

dmitriy555 [2]3 years ago

5 0

Answer:

45 degrees

Step-by-step explanation:

There are 180 degrees in a triangle, so

x + y + 90 = 180.

But x = y so we can write 2x + 90 = 180.

2x = 180 - 90

2x = 90

x = 45

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