esstebantrejoo esstebantrejoo

16-09-2016
Mathematics

contestada

What is the solution to this system of linear equations? 2x + y = 1 3x – y = –6

Respuesta :

nobillionaireNobley nobillionaireNobley

18-09-2016

2x + y = 1 . . . (1)
3x - y = -6 . . . (2)

(1) + (2) => 5x = -5 => x = -5/5 = -1

From (1), 2x - 1 = 1 => 2x = 1 + 1 = 2 => x = 2/2 = 1

x = 1, y = -1

Answer Link

Otras preguntas

two circles have a common chord of 16 in. Their centers are 21 units apart from each other. One of the circles has a radius of 17 in. a)Make an accurate diagra

Why do you think the Germans would want to liquidate or dismantle the camps, as well as kill all of the prisoners before the Allied armies arrived?

Plzzzzzzz follow meeeere

Which rate does not belong with the other three? 8 pounds for every 2 feet 12 pounds per 3 feet 20 pounds per 4 feet 24 pounds for every 6 feet

how to find principal without interest

Fill in the blank with the correct number. The number __________ is divisible by 2, 3, 4, 5, and 6. A.) 10 B.) 30 C.) 45 D.) 60

Define grassland ecosystem.

Home workGive (2) advantages anddisadvantages of modernand traditional Kitchen

There are 5 more than twice as many students taking Algebra 1 than taking Algebra 2. If there are 44 students taking Algebra 2, what is the least number of stud

HCl (aq) + H2O (l) ⇌ H3O^+ (aq) + Cl^- (aq) In 1.0 M HCl (aq), is nearly 100 percent dissociated, as represented by the equation above. Which of the following b