wyattc20 wyattc20

03-01-2020
Mathematics

contestada

Solve the system of equations using elimination. Make sure to show all work and find the value of both x and y
x-3y = 7
3x + 3y = 9
8x+ 3y = 1
4x + 2y = 0

Respuesta :

Yang100 Yang100

03-01-2020

Answer:

x=4, y=-1. (4, -1).

Step-by-step explanation:

x-3y=7

3x+3y=9

---------------

x=3y+7

3(3y+7)+3y=9

9y+21+3y=9

12y+21=9

12y=9-21

12y=-12

y=-12/12

y=-1

x-3(-1)=7

x+3=7

x=7-3

x=4

Answer Link

Otras preguntas

I arrive at the scene possible hazardous materials Spill what should I do before going on scene

please help thanks❗

What is the cube root of 27a^12?

Myra is evaluating the expression –31.7 + 4.5x, when x = 2.1. –31.7 + 4.5(2.1) –27.2(2.1) –57.12 What was Myra’s error?

Where is cape verde located?

A boat with a horizontal tow rope pulls a water skier. She skis off to the side so that the rope makes an angle of 10 degrees with the forward direction of moti

What was life like in the Mayan city states?

Can someone please help me?? Im not quite sure how to get this answer. What is the area of the shaded region in the figure below? Leave answer in terms of pi an

what is keplers .explain every law of planetary motion.

Which statement is true?