Can someone solve this problem and show the work?

➷ Angles in a triangle equal 180 degrees

Angle B = 180 - (90 + 42)

Angle B = 48 degrees <== this is the answer

➶ Hope This Helps You!

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↬ ʜᴀɴɴᴀʜ ♡

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb