The perimeter of a rectangle is 40 inches. If the length of the rectangle is 15 inches, which equation could be used to find the
1 answer:
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Answer:
6
Step-by-step explanation:
We are doing unit rate.
Unit rate is when you get the value for 1 of the variables. In this, we would want to get the value for t. We do to find the t value. Now we do
to find the value of the missing t. T=6.
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Answer:
Step-by-step explanation:
We are given the directrix equation and the location of the focus as a means to determine what the vertex (h, k) of the parabola is. Since the directrix is a horizontal line AND since the directrix is below the focus, AND since the parabola ALWAYS wraps itself around the focus, this is a positive parabola of the form
We also know that since the vertex is directly in between the focus and the directrix, it has coordinates of (0, 0). So h = 0 and k = 0.
By definition, p is the distance between the vertex and the focus (and also the vertex and the directrix since they are both the same). Therefore, p = 4.
Filling in our equation with those values gives us
and solving for y gives us