Por que os números -23 e +23 possuem o mesmo valor absoluto?

Horace's speedometer reads 60 miles per hour, but during a road test he finds that he was actually driving 58 mph. what is the percent error in horaces speedometer?

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18

What is the relationship between all triangles that can be drawn given the same three angles