langfordarmonip40dbs
langfordarmonip40dbs langfordarmonip40dbs
  • 03-05-2018
  • Mathematics
contestada

Giovanni justifies whether the expression -4x-8 is equivalent to -2(x+1)-2(x+3)by letting x=3 in both expressions. What is the value of each expression when x=3

3 and -20

4 and 4

-20 and -20

3 and 4

Respuesta :

carlosego
carlosego carlosego
  • 12-05-2018
For this case we have the following expressions:
 -4x-8
 -2 (x + 1) -2 (x + 3)
 Evaluating x = 3 in both expressions we have:
 -4 (3) -8 = -12 - 8 = -20
 -2 (x + 1) -2 (x + 3) = -2 (3 + 1) -2 (3 + 3) = -2 (4) -2 (6) = -8-12 = -20
 Answer:
 the value of each expression when x = 3 is:
 -20 and -20
Answer Link
DaisyBinaFlower
DaisyBinaFlower DaisyBinaFlower
  • 17-05-2018
The answer is C. -20 and -20 on grad soultions.
Answer Link

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