ilovecandy1 ilovecandy1

16-01-2017
Mathematics

contestada

Solve using elimination

10x - 5y = -20
-5x + 5y = -15

Respuesta :

doodle10 doodle10

16-01-2017

-5x + 10x + 20 = - 15
5x + 20 = - 15
5x = - 35
x = - 7

(10 x - 7) - 5y = - 20
-70 - 5y = - 20
-70 = - 20 + 5y
-50 = 5y
-10 = y

Answer x=-7 and y=-10

Answer Link

Otras preguntas

Which component of weather describes the weight of the atmosphere pressing down on Earth? A) Air pressure B) Air temperature C) Precipitation D) Wind direction

Emilio y yo ___ comprar una mochila nueva. (necesitar)

why are carcinogens difficult for toxicologists to identify

Pls help and solve this problem. I don't have an idea to solve this.

what is 3v+h v=5 h=10 which is what

Is ATAG-ABAG? If so, identify the similarity postulate or theorem that applies. 10 G B A. Similar - AA B. Similar - SSS C. Similar - SAS D. Cannot be determined

How does the neighborhood play a role in Tariq's death?

-x^2+2x-9=0 find the discriminant

On last week's math test, 32 students received passing grades and 16 students did not receive passing grades. What is the ratio of the number of students who pa

Item 5 Read this excerpt from Lord of the Flies. Jack drew up his legs, clasped his knees, and frowned in an effort to attain clarity. "All the same—in the fore