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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

5. Parts of Similar Triangles

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Exercise 50 Page 590

Use the Distance Formula.

sqrt(232) ≈ 15.2

Practice makes perfect

To determine the distance between two points, we use the Distance Formula. The coordinates of the given points are J(- 4,- 5) and K(2,9).

JK = sqrt((x_2-x_1)^2 + (y_2-y_1)^2)

SubstitutePoints

Substitute ( - 4,- 5) & ( 2,9)

JK=sqrt(( 2-( - 4))^2+( 9-( - 5))^2)

a-(- b)=a+b

JK=sqrt((2+4)^2+(9+5)^2)

Add terms

JK=sqrt(6^2+14^2)

Calculate power

JK=sqrt(36+196)

Add terms

JK=sqrt(232)

Calculate root

JK ≈ 15.2

The distance between J and K is approximately 15.2.

Subchapter links

Exercises p.586-590