Question

Evaluate |5 - 15|.

-10
10
20
-20
Evaluate 0 × |-6|.

-6
6
0

Answer 1

10 and 0.

Explanation:

The absolute value of a number is |x|= x if x≥0 or |x|= -x if x<0.

|5-15|=|-10| = -(-10) = 10.

0*|-6|= 0 * -(-6)= 0*6=0.

Answer 2

|a| = a for a ≥ 0

examples

|2| = 2, |4| = 4, |234| = 234, |1/2| = 1/2, |0| = 0

|a| = -a for a < 0

examples

|-4| = -(-4) = 4, |-6| = -(-6), |-123| = 123, |-4/5| = 4/5

|5 - 15| = | - 10| = 10

0 × |-6| = 0