mathstudent0
mathstudent0 mathstudent0
  • 02-04-2017
  • Mathematics
contestada

5x + 2y = 8
x + y = 4
If you want to solve the system of equations by addition, which of the following could you do?

Respuesta :

Shailza Shailza
  • 02-04-2017
Multiply the equation x+y =4 by -5
The resultant would be- 
-5x -5y = -20
Adding this with 5x +2y =8
Then, the resulting would be, 
-3y = -12
∴ y=4
and x=4-4 =0
Answer Link
sassyqueensavage
sassyqueensavage sassyqueensavage
  • 16-12-2020

Answer:

ita a

Step-by-step explanation:

Answer Link

Otras preguntas

write the fraction with the greatest value 7/10, 1/5, 9/10
draw 8 lines that are between 1 inch and 3 inches long. measure them to nearest fourth inch and make line plot
Simplify the expression. 9 5/2 A. 45. B. 243. C. 18. D. 9.
how was America able to add on land after the revolutionary war ?
What value of d makes the statement true? d + 12.6 = 9 A. –21.6 B. –3.6 C. 3.6 D. 21.6
During the Depression foreclosure rates skyrocketed. What was the main cause? a.People went into foreclosure when they left their homes to find jobs in other ci
A number between 61 and 107 that is a multiple of 4,10, and 20
can a trapezoid have three right angles
The Niagara Movement called for a. legal segregation. b. an end to immigration. c. full civil liberties for African Americans. d. more women’s colleges.
Why do you think mass media has such a strong influence on culture in united states and canada