Which of the following is an arithmetic sequence where a1 = 9 and d= 7?
1 answer:
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Answer:
see explanation
Step-by-step explanation:
The equation of a parabola in vertex form is
y = (x - h)² + k (h, k) are the coordinates of the vertex
Given y = x² + 7x - 5
To express in vertex form use the method of completing the square
add/subtract ( half the coefficient of the x- term )²
y = x² + 2( )x +
-
- 5
y = (x + )² -
-
y = (x + )² -
Hence
a = and b = -
Answer:
13 units^2
Step-by-step explanation:
one side of the square =
So area of square = Length * Length
= *
= 13