Given triangle abc ~ triangle def. what is the value of x?

if triangles are similar then corresponding internal angles are equal

=》 x = 180-(50+60) = 70degrees

Part a: what is the approximate y-intercept of the line of best fit and what does it represent? the approximate y-intercept of the line of best fit is (0, 3.3) and it represents the number of matches a player would win if the player doesn't practice any month.part b: write the equation for the line of best fit in the slope-intercept form and use it to predict the number of matches that could be won after 13 months of practice show your work and include the points used to calculate the slope.y=mx+bm=(y2-y1)/(x2-x1)taking: p1=(0,3.3)=(x1,y1)→x1=0, y1=3.3p2=(6,13.5)=(x2,y2)→x2=6, y2=13.5m=(13.5-3.3)/(6-0)m=10.2/6m=1.7b=3.3y=mx+by=1.7x+3.3the equation for the line of best fit in the slope-intercept form is y=1.7x+3.3number of matches that could be won after 13 months of practicex=13→y=1.7(13)+3.3y=22.1+3.3y=25.4the number of matches that could be won after 13 months of practice is approximately 25