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

solve 3x-4<2or2x+11>-1
which statement best decribes the us governments role with the banking industry at the beginning of the depression?​
El Gran Cañón ________ en el estado de Arizona. a. está c. están b. es d. son
indicate in standard form the equation of the line passing through the given points (6,2) m=-1/2
Which of the following is a difference between Judaism and Christianity?
Examine the air pressure map. Which type of line is shown on the map? isobar isotherm radar humidity
The law of conservation of energy says (5 points) energy can be created but not destroyed energy can be destroyed but not created energy cannot be created or de
Which of the following experiments involves the use of operant conditioning? A. blindfolding someone and timing him to see how long it takes him to estimate the
what is the mean of 6,8,8,10,13,16,21, and 26​
How did the us and the soviets react to the split nations of China