Let's create a table, and use arbitrary values of x between -3 and 3 (if the solution is not in this interval, we can use another one later). If we call:
We want to find the x's for with f(x) = 0
This is the table:
And now we can evaluate f(x) in each value of x to complete the table:
The table is:
If we use this values and plot them in the cartesian plane.
We get:
And now if we plot a line that connects the points, we get the graph of the quadratic equation:
Since the problem ask us to find the value of x for which f(x) = 0, we can see both in the table and in the graph that this value is x = 2
Answer:
Look at the y-intercept and x-intercept
Step-by-step explanation:
Determine which one they're looking for by finding the intercept or slope.
The missing side length is approximately 99.84 m
The answer is: [A]: "yd" .
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Note: Since we are referring to "how much rope is needed to surround the field" ; we are referring to the "perimeter"; or adding up the length of all the sides. So there will be no "squared units" (choice B — which would refer to the "area"; and no "cubic units" (choice C - would would refer to the volume of a 3-dimensional solid (e.g. rectangular prism; since we only have two dimensions {a football field; with only a length and width (no height) } ; and as mentioned; we are referring to the "perimeter"; which is the sum of the lengths of all sides.
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<span>Factor 80t - 16t = 0
</span><span>
= 16t(5 - 1)
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