B. 90°
C. 75°
D. 105°
Answer:
C. 75°
Step-by-step explanation:
We have been given a circle and we are asked to find the measure of angle AEC.
We will use Intersecting chords theorem to find the measure of angle AEC, which states that measure of angle formed inside a circle by two intersecting chords is one half the sum of the measure of the arcs intercepted by the angle and its vertical angle.
We can see that measure of arc AC is 110 degrees and measure of its vertical arc BD is 40 degrees.
Therefore, measure of angle AEC is 75 degrees and option C is the correct choice.
Answer : C. 75°
Given : arc length AC=110, CB=20, AD=190, and BD=40
We need to find ∠AEC
The below is the formula for measure of an angle formed by two chords
∠AEC =
We know arc AC = 110 and arc BD = 40
So ∠AEC =
=
∠AEC = 75 degrees
Hope it helped
-42 = -7x
Answer:
x=6
Step-by-step explanation:
-7x= -42
x= -42/-7
x=6
Answer:
x=6
Step-by-step explanation:
-42= -7x divide -7 on both sides
6=x negatives cancel out
x=6 flip (not necessary but teachers like it this way)
Answer:
Step-by-step explanation:
Find the standard form of the equation of the parabola with a focus at (0, -2) and a directrix at y = 2
The distance between the focust and the directrix is the value of 2p
Distance beween focus (0,-2) and y=2 is 4
The distance between vertex and focus is p that is 2
Focus is at (0,-2) , so the vertex is at (0,0)
General form of equation is
where (h,k) is the vertex
Vertex is (0,0) and p = 2
The equation becomes