lejoedixon lejoedixon
  • 02-02-2020
  • Mathematics
contestada

5x+2y=43 ; -6x+3y=-30

Respuesta :

meredith48034
meredith48034 meredith48034
  • 02-02-2020

Answer:

-3(5x+2y=43)

2(-6x +3=-30)

-15x-6y=-129

-12x+6y=-60

-27x=-189

x=7

5(7)+2y=43

35+2y=43

2y=8

y=4

(7,4)

Answer Link

Otras preguntas

In which type of reaction do two lighter nuclei combine to form one heavier nucleus? (1) combustion (3) nuclear fission (2) reduction (4) nuclear fusion
Compared to a proton, an electron has(1) a greater quantity of charge and the same sign(2) a greater quantity of charge and the opposite sign(3) the same quanti
Which compound has hydrogen bonding between its molecules? (1) CH4 (3) KH (2) CaH2 (4) NH3
Adding a catalyst to a chemical reaction results in (1) a decrease in activation energy and a decrease in the reaction rate (2) a decrease in activation energy
Which statement describes the relative energy of the electrons in the shells of a calcium atom? (1) An electron in the first shell has more energy than an elect
climatology is a subspecialty of
Karin wants to use the distributive property to find the value of 19 • 42 + 19 • 58 mentally. Which expression can she use? a. 19 x(42 + 58) b. 19 x(42 x 58)
Which sample contains particles in a rigid, fixed, geometric pattern?(1) CO2(aq) (3) H2O(ℓ)(2) HCl(g) (4) KCl(s)
When a neutral atom undergoes oxidation, the atom’s oxidation state(1) decreases as it gains electrons(2) decreases as it loses electrons(3) increases as it gai
From The Mouse and the Motorcycle, who are Betty and Mary Lou and where are they from?