ELduroPR ELduroPR

12-02-2018
Mathematics

contestada

Solve the system of linear equations. separate the x- and y- values with a coma. 4x+5y=1 -6x+3y=9

Respuesta :

Аноним Аноним

12-02-2018

4x+5y=1 ------- (1)
-6x+3y=9 -------(2)

(1) x 3 :
12x + 15y = 3 ------- (1a)
(2) x 2:
-12x + 6y = 18 ------ (2a)

(1a) + (2a):
15y + 6y = 3 + 18
21y = 21
y = 1 ------- sub into (1)
4x + 5(1) = 1
4x + 5 = 1
4x = 1 - 5
4x = -4
x = -1

Ans: x = -1, y = 1

Answer Link

Otras preguntas

How did the roman catholic church control daily life in medieval europe?

Which planet has the least gravitational attraction?

A hose is filling a water tank at the rate of 70 gallons per minute. A loose drain plug causes 8 gallons per minute to drain out. Show all work and label proper

The largest perfect square that divides into 180 is 36. Select one: True False

Which is the BEST explanation for the decline in cotton production that occurred in Georgia in the decades following World War II? A) The cotton crops were deva

Jenny uses 7/9 gallon of water to water roses. She uses 1/4 gallon less water to water herbs. How much water does Jenny use to water the roses and herbs? SHOW Y

Sun-hi, who operates a pan-asian restaurant in her apartment, is charged with criminal violations of the local health and building codes, state license regulati

Identify the correct invention of the industrial revolution with its inventor (More Than One)

Google this for me: How to handle analysis paralysis?

find the missing term (?????) + (7 - 3i) + (5 + 9i) + 13i = 10 - 5i