Your electric bill has been as follows for the past six months:
2 answers:
To find the monthly average (mean), add all the numbers up and divide the answer by the total number of numbers you added up.
July: $78.56
August: $30.21
September: $81.20
October: $79.08
November: $66.18
December: $100.75
Add all the bills up.
$78.56 +
$30.21 +
$81.20 +
$79.08 +
$66.18 +
$100.75 =
$435.98
Divide $435.98 by 6 (because you added up 6 numbers).
$435.98 ÷ 6 = $72.66
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Answer:
Step-by-step explanation:
Given:
Focus point = (-5, -4)
Vertex point = (-5, -3)
We need to find the equation for the parabola.
Solution:
Since the x-coordinates of the vertex and focus are the same,
so this is a regular vertical parabola, where the x part is squared. Since the vertex is above the focus, this is a right-side down parabola and p is negative.
The vertex of this parabola is at (h, k) and the focus is at (h, k + p). So, directrix is y = k - p.
Substitute y = -4 and k = -3.
So the standard form of the parabola is written as.
Substitute vertex (h, k) = (-5, -3) and p = -1 in the above standard form of the parabola.
So the standard form of the parabola is written as.
Therefore, equation for the parabola with focus at (-5,-4) and vertex at (-5,-3)