Answer:
10
Step-by-step explanation:
sin30° =
= 
Easy:
formula for parallelogram is b times h
so 5 times 14 =
70 sq mm.
Answer:
x = 30°
y = 30°
Step-by-step explanation:
By inscribed angle theorem:

2x + 3y = 1470
3y = -2x + 1470
y = -2/3x + 490 is the equation in slope intercept form.
slope = -2/3
y intercept = 490
Ax + z = aw - y....subtract aw from both sides
ax - aw + z = -y....subtract z from both sides
ax - aw = -y - z....factor out a on the left side
a(x - w) = -y - z...divide both sides by (x-w)
a = (-y - z) / (x - w)