egmoccer6yai egmoccer6yai

11-08-2016
Mathematics

contestada

what is the solution to the system of equations? x-y=7 3x-2y=8

Respuesta :

Ckaranja Ckaranja

13-08-2016

x-y=7
3x-2y=8
Multiplying equation I by 2;
2x-2y=14
3x-2y=8
Subtracting equation 1 from equation II;
x=-6
Replacing for x in equation II
3(-6)-2y=8
-18-2y=8
2y=-18-8
2y=-26
y=-13

Answer Link

Otras preguntas

Blayne is interviewing for an IT specialist position at a technology firm. His interviewer informs him that he will ask him a series of standardized questions t

Subject verb agreement is an example of which communication characteristic

Multiply the polynomials. (x+ 2)(2x2 + 9x+8)

Simplify -2 + (-9) A -7 B 11 C 7 D -11 Gradpoint.

Which of these is exhibiting kinetic energy? A.a space station orbiting Earth the high-energy phosphate bonds of a molecule of ATP B.a rock on a mountain led

Enzymes are responsible for keeping body temperature at a normal range even though chemical reactions in the body require and give off a great deal of heat ener

Mac deposits $800 in an account that earns 6% simle annual interest. How much money will he have after 3 years?Guys I need help

The polynomial of degree 4, P(x) has a root of multiplicity 2 at x=4 and roots of multiplicity 1 at x =0 and x= -4. It goes through the point (5,31.5). Find a f

A certain type of stainless steel powder is supposed to have a mean particle diameter of µ = 15µm. A random sample of 87 particles had a mean diameter of 15.2 µ

Which is the solution to the system of equations?