Answer:
x = 20°
Step-by-step explanation:
Since BD = CD then Δ BCD is isosceles and its base angles are congruent, so
∠ CBD = ∠ BCD = 80° , then
∠ BDC = 180° - (80 + 80)° = 180° - 160° = 20°
∠ ADC = 180° - (80 + 60)° ← sum of angles in triangle
∠ ADC = 180° - 140° = 40° , then
∠ BDC + x = 40°
20° + x = 40° ( subtract 20° from both sides )
16ft
it'll lean at about the 12ft mark
(-4,3)=x1,y1
m=-2
we have
y-y1=m(x-x1)
y-3=-2(x+4)
y-3=2x+8
2x-y+11=0 is the eqn
Dividend=
Divisor=
Quotient=
Remainder=43
