68.5k views
3 votes
Solve each problem and decide which is the best of the choices given.

What is the distance between the points (1,6) and (-7,3) on a standard coordinate plane?

39

73

173

55

User Guoliang
by
8.3k points

2 Answers

3 votes

Explanation:

I think you are missing the square root signs or so in the answer options.

the distance between 2 points is calculated by using Pythagoras for right-angled triangles.

c² = a² + b²

c is the Hypotenuse of the triangle and the distance between the points, which are the end points of the Hypotenuse.

a and b are the legs and enclose the 90 degree angle. they are the differences of the x and y coordinates between the 2 points.

so,

distance² = (1 - -7)² + (6 - 3)² = 8² + 3² = 64+9 = 73

=>

distance = sqrt(73)

User FastTurtle
by
8.4k points
3 votes
55 is the answer !!!!
User Vincent Scheib
by
8.2k points

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