laceybugtorres
laceybugtorres laceybugtorres
  • 04-03-2016
  • Mathematics
contestada

Solve the system of equations 2x + 3y = 40 and –2x + 2y = 20. A. x = –10, y = 20 B. x = 10, y = 20 C. x = –6, y = 4 D. x = 2, y = 12

Respuesta :

olemakpadu
olemakpadu olemakpadu
  • 05-03-2016
2x + 3y = 40
+
-2x + 2y = 20
___________                  Adding both equations

0x + 5y  = 60
____________


5y = 60
y = 60/5 = 12

y = 12.

Since we have gotten y =12, and the only option with that is option D.

So we don't have to solve for x.

The answer is D.

Answer Link
Аноним Аноним
  • 15-04-2021

Answer:

y=12

Step-by-step explanation:

Answer Link

Otras preguntas

Which statement is not true? Peer pressure isn't a problem for teenagers. Peer pressure can be good or bad. Peer pressure is usually seen as negative. Peer pre
Can someone help me with this please
what was the outcome of most European revolts in the 1930s
Which idea is included in the Hippocratic Oath but not in the Declaration of Geneva
A ferryboat makes four trips to an island each day.The ferry can hold 88 people.If the ferry is full on each trip,how many passengers are carried by the ferry e
i need help plz, percents
How would you define the term energy?
How can lose the weight around one month?
which factor was a major cause of the great depression of the 1930s?
a machine can produce 6 yards of fabric in 2 minutes how much fabric in the machine produce in one hour