The graph of a quadratic equation opens down when the value of a,b or c Is negative
1 answer:
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Answer:
The single decimal multiplier is 1.26.
Step-by-step explanation:
Multipliers:
For a decrease of a%, we multiply by:
For a increase of a%, we multiply by:
For consecutive changes, we multiply the multipliers.
Increase of 5%
Multiply by
Increase of 20%
Multiply by
Consecutive:
1.05*1.2 = 1.26
The single decimal multiplier is 1.26.
Given:
In the given circle O, BC is diameter, OA is radius, DC is a chord parallel to chord BA and .
To find:
The .
Solution:
If a transversal line intersect two parallel lines, then the alternate interior angles are congruent.
We have, DC is parallel to BA and BC is the transversal line.
[Alternate interior angles]
In triangle AOB, OA and OB are radii of the circle O. It means OA=OB and triangle AOB is an isosceles triangle.
The base angles of an isosceles triangle are congruent. So,
[Base angles of an isosceles triangle]
Using the angle sum property in triangle AOB, we get
Hence, the measure of angle AOB is 120 degrees.