espinosajoselyn espinosajoselyn
  • 12-01-2019
  • Mathematics
contestada

what is 2|u|-|v|, if u= -9 and v=-2?

A.-18
B. -20
C. 16
D. 20

Respuesta :

gmany
gmany gmany
  • 12-01-2019

[tex]\text{Put the values of u = -9 and v = -2 to the expression }2|u|-|v|:\\\\2|-9|-|-2|=2(9)-2=18-2=16\\\\Answer:\ \boxed{C.\ 16}\\\\|a|=a\ if\ a\geq0\\|a|=-a\ if\ a<0\\\\Examples:\\\\for\ a\geq0\\|3|=3;\ |6|=6;\ |0|=0\\\\for\ a<0\\|-3|=-(-3)=3;\ |-6|=-(-6)=6;\ |-9|=9[/tex]

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