egertonblaze egertonblaze

04-08-2017
Mathematics

contestada

4x - 3y = 17 5x + 4y = 60 x = 2, y = -3 x = 5, y = 8 x = 8, y = 5 x = -8, y = -5

Respuesta :

texaschic101 texaschic101

04-08-2017

4x - 3y = 17.....multiply by 4
5x + 4y = 60 ...multiply by 3
-----------------
16x - 12y = 68 (result of multiplying by 4
15x + 12y = 180 (result of multiplying by 3
-----------------add
31x = 248
x = 248/31
x = 8

4x - 3y = 17
4(8) - 3y = 17
32 - 3y = 17
-3y = 17 - 32
-3y = - 15
y = -15/-3
y = 5

solution is (8,5) <==

Answer Link

Otras preguntas

41 divided by 278.8=

What responsibilities did women take on during the war?

A particular amusement park ride will make 156 revolution in 180 seconds. At this rate, how many revolutions will it make in 2 minutes?

Unit rate for 21 3/4 in 2 1/2 hours

Is 115 divisible by nine

During the 15th century , which two european countries began sea voyages of exploration

what expression can be used to find the total discount $42 30%

Sarah starts at one corner of a square field and walks 60 feet along one side to another corner of the field. She turns 90° and walks 40 feet, and then walks st

Faith is 1/5 get morthers age. their combined ages are 30. how old is faith

An assembly-line machine turns out washers with the following thicknesses (in millimeters). Find the mean and standard deviation of the thicknesses. 1.42, 1.8