sakinaray sakinaray

04-11-2020
Mathematics

contestada

Solve the system of equations x+y=-1 and 5x-7y=79 by combining the equations.

Respuesta :

sqdancefan sqdancefan

04-11-2020

9514 1404 393

Answer:

(x, y) = (-6, -7)

Step-by-step explanation:

Multiply the first equation by 7 and add that to the second.

7(x +y) +(5x -7y) = 7(-1) +(79)

12x = 72

x = 6

y = -1 -x = -1 -6 = -7

The solution is (x, y) = (6, -7).

Ver imagen sqdancefan

Answer Link

Otras preguntas

What changed almost every aspect of the life in South Carolina in the late 1800s

Given the equation 7m − 11 = 5m + 43 and the possible solution set S: {2, 27, 54, 86}: Part A: Determine which integer(s) in the solution set makes the equatio

Interest and Annuity 7. A sum of money doubles itself in 6 years at certain rate of interest. In how many years would it triple if the rate of interest is incre

equations that have mixed numbers with the product of 54

In the diagram below, line t intersects parallel lines r and s. 1 2 4 3 5 6 8 7 If the measure of <3 = 68°, what is the measure of <8? ○ 180° O 112° 0 68°

Read the excerpt from "Sympathy" by Paul Laurence Dunbar. Then, answer the question that follows. And they pulse again with a keener sting— I know why he beats

how does highlighting skills and experiences make you a suitable candidate

Write an essay What, specifically, are you doing now to establish financial independence?

28-day-cycle schedules are subdivided into four groups___________

Make a list of what you will say to build on your claim. Include two reasons, a way to address a counterclaim, and a conclusion.