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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

2. Probability with Permutations and Combinations

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Exercise 38 Page 898

The Ruler Postulate is used to find the distance between points on a segment.

3 units

Practice makes perfect

To find the length of DF, let's consider the given number line.

According to the Ruler Postulate, the distance between two points is the absolute value of the difference between their coordinates. Let d and f represent the coordinates of D and F, respectively.

DF=|d-f|

d= 2, f= 5

DF=| 2- 5|

Subtract terms

DF=|- 3|

|-3|=3

DF=3

The length of DF is 3 units.

Subchapter links

Exercises p.895-898