HighschoolerGranny HighschoolerGranny

14-01-2015
Mathematics

contestada

What is the solution to the system of equations?

5x - 3y = -9
2x - 5y = 4

(_,_)

THANKS!!

Respuesta :

14-01-2015

Multiply the 1st equation by 2 and the 2nd by 5 to get:
10x-6y= -18
10x-25y=20
subtract equation 2 from equation 1 and the x's cancel:
10x-6y= -18
10x-25y=20
19y= -38
y= -2
substitute y= -2 into either of the original equations to get x= -3
(-3, -2)

Answer Link

Otras preguntas

Most amendments to the constitution have been ratified by the vote of:

Why was the code of hammurabi a major achievement?

Which is an advantage to using nonrenewable resources? A.They can be cheaper. B.They can have a lower impact on the environment. C.They can be used up rapidly.

What is the value of y?

which best characterizes the league of Nations response to the invasion of Ethiopia, Manchuria and the Rhineland?

What is the structure of in Italian sonnet

Mrs. weston asks colin if he wants his sandwich in one piece, or cut into two pieces. colin asks her to keep it in one piece, because he isn't hungry enough to

Rafael writes an expression to represent “a number, n, decreased by thirty-one.” Then he evaluates that expression if n=29. Which statements are true about the

What is the molecular formula for the compound with a formula mass of 58.12 and an empirical formula of c2h5?

Out of forty students 14 are taking english composition and 29 are taking chemistry five students are taking both how many students are taking neither class