A car traveled 3/4 mile in one minute at a constant speed. What was the speed of the car in miles per hour ?
1 answer:
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Answer:
The angle between these radii must be 120º.
Step-by-step explanation:
According to Euclidean Geometry, two tangents to a circle are symmetrical to each other and the axis of symmetry passes through the center of the circle and, hence, each tangent is perpendicular to a respective radius. We represent the statement in the diagram included below.
Then, we calculate the angle of the radius with respect to the axis of symmetry by knowing the fact that sum of internal angles within triangle equals 180º. That is to say:
And the angle between these two radii is twice the result.
The angle between these radii must be 120º.
Answer:
Resulting plot in the image attached
Step-by-step explanation:
Start by making a table of (x,y) pairs that satisfy this equation. Notice that two pairs would be enough, but it is always safer to obtain at least three to see them actually "aligned".
We are trying to find values for y when x= 0, 2, and 4 to make our calculations simple:
When x = 0 then: So we plot the value (0,-3) on the x-y plane.
When x = 2 then: So we plot the value (2,-2) on the x-y plane.
When x = 0 then: So we plot the value (4,-1) on the x-y plane.
Please see the points and the resulting line in the image attached
