Answer:
140,120
Step-by-step explanation:
sum of angles in a quadrilateral =360
sum of the 1st two angles=60+40=100
360-100=260
the ratio of the remaining angles 7:6
therefore:

=140
for the second angle
260-140=120
The answer for this question is 22.25, the easiest way to work out the area of a triangle is to use a triangle area calculator.
3. 20
5. 28
7. 52
I'm pretty sure... hope this helps
9x + 3 -1(7x + 8)
9x + 3 -7x -8
2x -5
Hope this helps!