I GIVE BRAINLIST !! Which point is in the graphed solution set of this system of inequalities

-3x+y>1
y>_ x-1

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 7x + 33, and the other angle measures 70. 5.3 8.14 11 14.7