For #16, it can be assume that the two angles are linear, so set them both equal to 90 (9x+x-10=90) and solve for x. Once you have x, plug it into the equations to find the measure of both angles. If both your final answers are added, they should equal 180. If not, go back and try to find where you messed up.
Answer:the length 7
Step-by-step explanation:each one is times 3 6x3 8x3 3x7=21
The answer to the question is <span>70.6179775281. which also can be converted to 71.</span>