You need to have a little more detail in your answer, sir or madam.
The lcm of 6 and 18 is C.)18
Answer:
70 degrees
Step-by-step explanation:
Angle BZA = Angle BZC = 20 degrees
Reason : These two angles are Vertically opposite angles.
Angle BZA + Angle BZC = 90
20 + Angle BZC = 90
Angle BZC = 90 - 20
Angle BZC = 70 degrees
3x = 75 since it is an isosceles triangle
x=25
Angle C = 75 degrees
a Triangle = 180
180 =A+B+C
180 = A +75 +75
180 = A + 150
A = 30
30 = 4y+10 subtract 10 from each side
20 = 4y divide each side by 4
y=5