What is the distance between points 21,-30 and 3,8 if necessary round your answer to the nearest too decimal places

42

Explanation:

a=x1-x2=21-3=18

B=y1-y2=-30-8=-38

These two distances can be considered as the base and vertical side of a right triangle with the distance between the two as the hypotenuse. Then we use the pythagorean theorem to find the hypotenuse, c.

C^2=a^2+b^2

C^2=18^2+-38^2

C^2=1768

C= Square root of 1768=42.0

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