Sum of the angles of any quad =360 then y+(x+2)+(x-2)+(x-10) = y +3x -10 =360 (by adding both sides by 10) y + 3x =370 ;.... eq 1 the sum of each two opposite sides in a quad inscribed in a circle =180 then (x+2)+(x-2)=180 therefore 2x =180 therefore x=90 (sub in eq 1) y+3*90 =y +270 = 370 (subtracting both sides by 270) therefore y=100 then measure angle B=100 degrees A=92 degrees C=88 degrees D=80 degrees
<span>The constant rate of change is 30 seconds because: 1 mile=30 seconds 2 miles=1 minute 3 miles=1 minute and 30 seconds 4 miles=2 minutes 5 miles=2 minutes and 30 seconds or in other words 2.5</span>
the diameter, and using 3.14 for 
):