Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). A parabola is given by the equation y=x2 + 4x + 4

The vertex of the parabola is (blank)The focus of the parabola is(blank)

The directrix of the parabola is given by the equation y=(blank)

Note: Separate coordinates inside parentheses with a comma. PLEASE HELP!!

Vertex: (-2, 0)

Focus: (-2, 1/4)

Directrix: y = -1/(4a)

Step-by-step explanation:

Given that a parabola has a general form of:

The vertex is at:

The focus falls on the symmetry axis (x=h) of the parabola at:

The directrix is a straight line described by:

If we are given the parabola:

Then:

The vertex of the parabola is (-2, 0)

The focus of the parabola is  (-2, 1/4)

The directrix of the parabola is given by the equation y = -1/(4a)

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°