hahntimmy hahntimmy

11-10-2016
Mathematics

contestada

solve the system of equations 3x+2y=14 2x-4y=4

Respuesta :

texaschic101 texaschic101

11-10-2016

3x + 2y = 14....multiply by 2
2x - 4y = 4
----------------
6x + 4y = 28 (result of multiplying by 2)
2x - 4y = 4
----------------add
8x = 32
x = 32/8
x = 4

2x - 4y = 4
2(4) - 4y = 4
8 - 4y = 4
-4y = 4 - 8
-4y = -4
y = -4/-4
y = 1

solution is (4,1)

Answer Link

Otras preguntas

Why is Mary Shelley's novel Frankenstein considered a work of science fiction when it is a representative work of the gothic genre? A. Many scientific theories

What is John Steinbeck’s purpose in writing the essay "Symptoms"?

Which of the following molecules is responsible for transmitting the energy needed by cells

Explain three ways that Europeans have changed their land.

Write an expression for the model. Find the sum. options: a) 2 + (–3); 1 b) –3 + 2; 5 c) 2 + 3; 5 d) 2 + (–3); –1

Please help...i really need it due tomorrow

In what type of change is matter not destroyed? A. physical only B. chemical only C. physical and chemical

According to Newton’s first law of motion, what is required to make an object at rest move

Express the function as the sum of a power series by first using partial fractions. f(x) = 8 x2 − 4x − 12 f(x) = ∞ n = 0 find the interval of convergence. (ente

Alicia estudia en su dormitorio