Answer:
Their is this website that has any basically every calculator on it and it show work. It is called "calculator soup"
Answer:
something perpendicular probably
Answer:
118°
Step-by-step explanation:
the angle measures of a triangle will always add up to 180
so..
42+20=62
180-62=118
Answer: x = -5
Step-by-step explanation:
-x + 4 = 9
-4 -4
-x = 5
divide by -1 on both sides
x = -5