John and David graphed a circle with center (-3,1)
1 answer:
Neither of them are fully correct because the equation of a circle is:
h = x value of center coordinate
k = y value of center coordinate
r = radius
Therefore, the correct equation of the circle is:
David had the correct values in each of the parentheses while John had the correct value on the right side of the equation.
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The question is incomplete. Here is the complete question:
A machine covers 5/8 square foot in 1/4 hour. what is the unit rate?
Answer:
2.5 square feet per hour
Step-by-step explanation:
Given:
Area covered by a machine =
Time taken to cover the given area =
Now, unit rate of the first quantity with respect to second quantity is the magnitude of the first quantity being when the second quantity is one unit.
Here, the first quantity is the area covered and the second quantity is the time taken.
So, unit rate is the area covered by the machine in 1 hour.
In order to find that, we use the unitary method and divide the area by the total time taken. Therefore,
Thus, the unit rate is 2.5 square feet per hour.