At how many values of alpha(0 degrees < alpha <= 360 degrees) does pentagon A^ prime B^ prime C^ prime D^ prime E^ prime coincide with pentagon ABCDE? What is significant about this number

b. 2

step-by-step explanation:

the slope of a line =δy/δx

δy= y₂-y₁

δx= x₂-x₁

therefore, using the points (-2,-3)   and (3,7) we can calculate gradient as follows:

m=(7--3)/(3--2) (a number minus a negative number the sign changes to a plus)

m=(7+10)/(3+2)

=10/5

=2

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step-by-step explanation:

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step-by-step explanation: