gretchenglg gretchenglg
  • 02-12-2020
  • Mathematics
contestada

What number would you multiply the 2nd equation by in order to eliminate the y terms?
4x - 4y = 16
2x + y = 5

Respuesta :

jahzara06
jahzara06 jahzara06
  • 02-12-2020

Answer:

x=3

y=-1

Step-by-step explanation:

first multiply the 2nd row by 2 so you will get

4x-4y=16

4x+2y=10

then subtract the 2nd row from the first row and so you will get

-6y=6

then solve for y in the above equation

y=-1

then substitute y=-1 into any 2 equations .

i picked the first 1

4x-4 × -1=16

then solve for x .

you will get

x=3

Answer Link

Otras preguntas

Is the underlined word a participle or verb? Are you cooking a special birthday dinner? _______ A. verb < B. participle
in order to keep a political speech brief you should be able to summarizr the main theme in sentences
Based on your knowledge of prefixes, what does en- mean? Cause to In front Wrongly Before
The crown of a tooth is below the gum. TrueFalse
f(x) = x3 + 5x2 - x - 5 What are the factors of f(x)?
Given: AB is the perpendicular bisector of IK. What statement can you conclude is true from the given information BI=BK B is the midpoint of IK BK=AK
At one time, dinosaurs lived on Earth. Today they are extinct. This relates to _____. A. microevolution B. both macroevolution and microevolution C. macroevolut
how does the prudent person rule apply in this case?
What are the trends in Australia's demographic characteristics ? (One parra graph If possible)
2.) Unlike photosynthesis, cellular respiration occurs in (1 point) A. Animal Cells Only B. Plant Cells Only C.prokaryotic cells only. D.all eukaryotic cells.