Answer:
Should be D.
I don't know why it won't let me respond with under 20 characters.
Answer:
& 
Step-by-step explanation:
You need to find x first in order to find the measure of angle C. To solve for x, we will use the fact that interior angles of a triangle have angle measurements that add up to 180 degrees.
Using this knowledge, we can create an equation where angles A, B, and C add up to equal 180.
Combine like terms on the left side of the equation.
Subtract 6 from both sides of the equation.
Divide both sides of the equation by 3.
Now that you've found the value of x, you can use this value to plug into the expression for angle C.
Therefore, the final answer is:

Answer:
maybe the answers are: no, yes, yes.
Step-by-step explanation:
not too sure but I hope this helps and is right :)
i am incredibly sorry if my answers are wrong!
Answer:
the average speed is 700 km/hour
Step-by-step explanation:
Answer: 40°
Step-by-step explanation: The formula for calculating the size of an exterior angle is: exterior angle of a polygon = 360 ÷ number of sides. So it's 360°÷9=40°