9) is 180-(67+28)=85 because a triangle will always equal 180 degrees you take the other two add them together and subtract them from 180.
10) A flat line is 180 degrees and if a line cuts through two perpendicular lines it will bisect at the same angle. so 180-125=x=55 degrees
The hcf is also known as the GCF (Greatest Common Factor)
The HCF or GCF can sometimes be one because one of the numbers might be prime.
Prime numbers are the numbers that can be divided by only one and themselves.
x= - 4/3 solve for x by cross multiplying
Answer:
130
Step-by-step explanation:
180-130=50
