Answer:
B. 
Step-by-step explanation:
We all suck at math... just lmk if you need more help...
Answer:
No answer
Step-by-step explanation:
5x-20-X+9
7x-20+9
7x-11
the measure is 140, I basically summed all of the angles of a polygon of “n”, which is 7, then I did 7-2 times 180 (900) so I can finally add up all of your measurements
Answer is 2263.
Checkpoint 1 is -86
Checkpoint 4 is 2177
Subtract -86 from 2177....2177-(-86)
=2263
2263 is how much higher checkpoint 1 (-86) is from checkpoint 4 (2177)
Hope this helps! :)
first
second
and fifth are true
Basically the square root of -1 is i. From that you should be able to deduce the answers.