lalabu9 lalabu9

10-11-2020
Mathematics

contestada

What is the solution to this system of equations?

x − 2y = 15
2x + 4y = -18

Respuesta :

meghannaylis meghannaylis

10-11-2020

Answer:

y=-6 ; x=3

Step-by-step explanation:

x − 2y = 15

2x + 4y = -18

x − 2y = 15

+2y . +2y

x=2y+15

2(2y+15) + 4y = -18

4y+30+4y=-18

8y+30=-18

-30 . -30

8y=-48

y=-6

x=2(-6)+15

x=-12+15

x=3

Answer Link

Otras preguntas

What was one significant element of the Cold War arms race between the Soviet Union and the United States. A the closing of the “missile gap”. B the banning of

What is the domain of y = sec(x)?

In the scale used on a blueprint, 14 inch represents 3 feet. On the blueprint, what is the length of a room with an actual length of 24 feet? 1. 3/4 in 2. 2 in

On a coordinate plane, a circle has a center at (8, 9). Concentric circles are circles with the same center but different radii. Which equations represent conce

Find the value of X.

At T = 250 °C the reaction PCl5(g) PCl3(g) + Cl2(g) has an equilibrium constant in terms of pressures Kp = 2.15. (a) Suppose the initial partial pressure of PCl

What is the purpose of leading in typography? A. to generate whitespace between groups of characters OB. to generate space between individual characters of a wo

I NEED HELP ASAP PLEASE, THANKS! :)

Basic factoring. Please help!

The people in an economy have $10 million in money. There is only one bank that all the people deposit their money in and it holds 5% of the deposits as reserve