An isosceles triangle has base angles that each measure 42∘. Which equation can be used to find z, the measure of the third angle of this isosceles triangle in degrees?

180 - 84 = z

Step-by-step explanation:

all angles in a triangle should add up to 180.  If both angles add up to 84 (42 + 42) all theres left to do is to substract 84 from 180 to find z :)

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.