Answer:
buy 28 blue mask and 14 white mask
Step-by-step explanation:
(-0.5,-2.5)
x1+x2/2,y1+y2/2 that is the midpoint formula so just plug in the known numbers and solve
2-3 4-9
--- -----
2 2
x= -0.5
y= -2.5
DF = 3
m<B = 28 degrees
Hope that helps!
