What is the measure of angle b
2 answers:
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Answer:
B
Step-by-step explanation:
The vertex is the turning point of the parabola.
First find the zeros by equating y to zero, that is
(x - 6)(x + 12) = 0
Equate each factor to zero and solve for x
x - 6 = 0 ⇒ x = 6
x + 12 = 0 ⇒ x = - 12
The vertex lies on the axis of symmetry which is situated at the midpoint of the zeros, thus
=
=
= - 3
Thus the x- coordinate of the vertex is x = - 3 → B
Answer:
Explanation:
first term, a₁ = 1
difference between the terms: -3
- used geometric formula :
<u>where "a₁ is first term" and "r refers to common difference"</u>
- formula for this nth term: