Answer:
x=6
Step-by-step explanation:
12x + 3=11x+9 corresponding angle
12x-11x=9-3
x=6
Answer:
30
Step-by-step explanation:
The line is divided up into 3 parts, a part of 3, a part of 4, and a part of 1. If we had those parts together we get 8 meaning if we divided the line into equal parts that also fit into a, b, and c there would be 8. We can than divide the line into 8 parts which would be 10 each since a line is 180 degrees. Since a is 3 than a gets 3 of those parts meaning a would be 30
I hope this helps and please don't hesitate to ask if there is anything still unclear!
The required coordinate of A will be at (-4, 0)
When a point bisects a line, it cuts the line into two equal parts and the point on that line is known as its midpoint. The expression for calculating the midpoint of a line is expressed as;
where:

From the question, we are given the following coordinate points

Get x₂;

Get y₂;

Hence the coordinate of A will be (-4, 0)
Learn more about the midpoint here: brainly.com/question/18315903