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

Otras preguntas

Help!! Please I need help on understanding this.Simplify the expression –4(x – 7) + 3(x + 9).
Who was John Howe ( American revolutionary war) and why did he matter to our history?
A three-carbon alkene contains two double bonds. Predict its molecular formula
Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the lake, the rock's distance from th
Geologists have divided Earth's history into time units, which are largely based on?
how can i solve 5.5x+32=57
what is 28.09 rounded to the nearest tenthvis
how a convection current can enable a hawk or eagle to soar upward without flapping its wing
members of which phylum contain stinging capsules that poison the entangled prey
what is the value of the tape diagram if the ratio is 8 to 7 and the total is 195