02-11-2017
Mathematics

contestada

Elimination
4x+5y=-15
-3x-2y=13

Respuesta :

Dreamer4102001 Dreamer4102001

04-11-2017

multiply the first equation by 3 and tge second by 4:
12x+15y=-45
-12x-8y=52
then add the equations:
0x+7y=7
7y=7
y=1
so 4x+5(1)=-15
4x+5=-15
4x=-20
x=-5

Answer Link

Otras preguntas

The brain is primarily comprised of two different kinds of cells. they are neurons and:

Surveys indicate that ___________ percent of people in the united states experience social anxiety disore united states experience social anxiety disorder in a

How much of earth water is found as ice glaciers and icecaps?

In which of the following would you expect the best transmission of light? a. hot gas b. a glass of very cold liquid c. an object in the solid state d. colored

Bojangles has a rectangle-shaped roof with a width of 6x^2 feet and a length 12x^3. What is the area of the roof?

What idea was the centerpiece of fdr new deal with which he hoped to reserve the depression?

Which determiner could be used before the noun house to refer to a specific house? A. no B. every C. any D. that

When scientists use one of their five senses to gather information, they are?

write each number in scientific notation 1 27.5

With whom did Aaron Copland study while he was in Paris? A. Arnold Schoenberg B. Béla Bartók C. Nadia Boulanger D. Igor Stravinsky