jdolan8 jdolan8
  • 02-03-2020
  • Mathematics
contestada

Solve the system below algebraically:
4x-y=20
-2x-2y=10

Respuesta :

pezgrl78 pezgrl78
  • 02-03-2020
X= 3
Y= -8

Solve the 1st equation for y.
With your new Y value, plug it into the 2nd equation (for y).

Take a look at pic.
Answer Link

Otras preguntas

Simplify the expression. [90 – (12 + 13)](15 ÷ 3)
what are the effects of global warming
373 of 500 in fractions and decimal
Express 230 in scientific notation
What's needed to know Right now we are doing unit 1 which is about tensions in ropes and weight and stuff about newtons. We are taking a test tomorrow and I st
how to solve 0.01x+0.07y=0.22 and 0.03x-0.05y=0.14 by substitution
1) fought at Lexington and Concord 2)a formal meeting called for a special purpose 3) complaints against British rule 4) formed to solve the problem of trade
What features of colonial politics in 18th century America contributed to the development of popular democracy, and what kept political life from being more tru
How many seismic stations are needed to determine the location of an earthquake's epicenter?
There are 30 students in a class that took a test. The average grade of 10 students was 80. The other 20 students average was 89. What is the overall average fo