20-05-2017
Mathematics

contestada

Solve the following system of equations 4x + 5y = 5 and 8x +5y = 25

Respuesta :

qumpelka qumpelka

20-05-2017

4x + 5y = 5 / (-1)
8x + 5y = 25

-4x - 5y = -5
8x + 5y = 25

-4x + 8x = -5 + 25
4x = 20
x = 5

4x + 5y = 5
4*5 + 5y = 5
20 + 5y = 5
5y = 5 - 20
5y = -15
y = -3

8x + 5y = 25
8 *5 + 5y = 25
40 + 5y = 25
5y = 25 - 40
5y = -15
y = -3

Answer Link

Otras preguntas

The atomic nucleus contains __________. a. protons and electrons c. protons and neutrons b. electrons and neutrons d. protons, neutrons, and electrons

describe how a student could use a microscope to compare the size of frog skin cells to the size of human skin cells.

The process of squeezing food through the digestive tube by contractions of the outer wall is: A. digestion B. enzyme action C. peristalsis D. hydrolysis

A _____ is a preformatted structure for a document.

nine fever than half a number is five more than four times the number

What's the job of the ribosome?

In 1957 Eisenhower used the Arkansas national guard to what?

Which of the following chemical symbols represents the element sodium? A. S B. N C. Sc D. Na

What is the temperature 32 degrees Fahrenheit in degrees Celsius? a. 20 degrees Celsius b. 0 degrees Celsius c. 10 degrees Celsius d. 10 degrees Celsius

Which of the following is NOT a subphyla of arthropods? a. Cestoda c. Crustacea b. Chelicerata d. Uniramia