royfieldsouamjo royfieldsouamjo

14-08-2017
Mathematics

contestada

Please help me!! find the solution of this system of equations -x + 5y=-18 5x - 9y= 10

Respuesta :

kphung76127 kphung76127

14-08-2017

Multiply the first equation by 5 to use the elimination method.

-5x+25y=-90
5x-9y=10

16y=-80
y=-5

Plug this y value into one of the original equations.

-x+5(-5)=-18
-x-25=-18
-x=7
x=-7

Final answer: (-7,-5)

Answer Link

Otras preguntas

please help me with his geometry question

Which of the following is not a quadratic function?

In eukaryotic cells, glycolysis occurs in the _________, and the tca cycle reactions take place in ___________.

In the figure, lines a, b, and c are parallel and m∠4=68° . Drag and drop the correct angle measure for each angle. m∠1 = m∠2 = m∠3 = m∠5 = Lines a b

How many lecterns does N need to gain to become isoelectronic with noble gas

PPPLLLLLZZZZZ HELP I WILL GIVE U 50 POINTS What is something that both Grady and Douglass wanted for the South? A) anarchy B) railroads C) northern ca

Is okonkwo ashamed of his father unoka?

Create a system of equations With the wind, an airplane travels 1120 miles in 7 hours. Against the wind, it takes 8 hours. Find the rate of the plane in still a

Mr. Richard's science class is conducting a variety of experiments with projectiles and falling objects. Two groups of students are using a slingshot to launch

Which is a disorder in which alveoli in the lungs can no longer function properly?