3.) Find an equation of a parabola with a vertex at the origin and directrix y=-1.5.

x=-1/6y^2

x=1/6y^2

x=-1/6x^2

x=1/6x^2

29.5977692753

step-by-step explanation:

tangent

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh