1.
Quadrilateral, <span>Sum of Interior Angles= 360
90+ 90 + 60 + x = 360
x + 240 = 360
x = 360 -240
x = 120
2.
</span><span>length of the mid-segment of trapezoid is half the sum of the lengths of the two parallel sides
</span><span>
</span><span>x = (5+9)/2 = 14/2 =7</span>
Im not exactly sure but it seems you have to add then divide ONCE again im not sure....
Answer:
m = 
Step-by-step explanation:
The slope of (0,3) (4,1) =

Hope this helps :)
Answer:
I came up with -12
Step-by-step explanation:
8 workers = 6 days to complete
x workers = 4 days faster to complete
6/4=1.5 days faster
1.5 x 8 = 12 workers needed to complete the wall in fours days