megrobertson1213 megrobertson1213

07-10-2016
Mathematics

contestada

3x+3y=6 and 5x-6y=15

Respuesta :

apologiabiology apologiabiology

07-10-2016

multiply first equaton by 2 and add to the other equation

6x+6y=12
5x-6y=15 +
11x+0y=27

11x=27
divide both sides by 11
x=27/11

sub back
3x+3y=6
divide both sides by 3
x+y=2
(27/11)+y=2
2 and 5/11+y=2
minus 2 and 5/11 both sides
y=-5/11

x=27/11
y=-5/11
(27/11,-5/11)

Answer Link

Otras preguntas

Marsha sees an airplane flying overhead. The spot on the ground that is directly under the plane is 3,600 feet from Marsha's house. She sees the plane at a 45o

What is the SECOND STEP to solve this equation? 3x+2=17 Question 6 options: Add 2 to both sides Subtract 2 from both sides Multiply both sides by 3 Divide both

There should be 2 paragraphs in this text. Select where the second paragraph begins.

Which passage shows spatial organization? O A. Pete's Ice Cream will close due to its inability to maintain a customer base in the winter months O B. After you

The relationship between the 3 sides in a right triangle

Hello, please search for the poem, online bullying by Bill Kochman, and state 3 literary devices found in the literature writing, along with evidence.

What do you understand by memory word?

helppppppp!!!!!!!!!!!!!!

What are the two definitions of cash, and why do corporate treasurers often use the second definition?

Choose the line plot that correctly shows this data about the growth of bean plants: 1/2,3/4,1/2,1/4,1/2,1/4,3/4,3/4,1/2