Mike drove 20 miles in a 1/2 hour. what is his unit rate in miles per hour? a 20 miles b 30 c 40 d 50

40 miles an hour

Step-by-step explanation:

Note that the speed given to you is in 1/2 an hour. To get 1/2 hour to become 1 hour, multiply by 2.

20 = 1/2h

20(2) = (1/2)h(2)

Simplify. Isolate the h. What you do to one side, you do to the other

20(2) = h

h = 40

40 mph is your answer

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for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c