A parabola has the following properties. 200R
Vertex at (-2, 1)
Directrix is x = 5
A
Which equation represents this parabola?
0 (x + 2) = (y – 112
O 28(x + 2) = (y - 1)2
o-28(x + 2) = (y - 1)2
O - (x + 2) = (y – 1)

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

A. s.a.! this is a similarity in right triangles. next (solve for x)a.) 12b.) 5c.) 12.5d.) [tex] 6\sqrt{3} [/tex]