Seudónimo Seudónimo

02-12-2016
Mathematics

contestada

solve system by elimination
9x-3y=3
3x+8y=-17

Respuesta :

apologiabiology apologiabiology

02-12-2016

multiply 2nd equation by -3 and add to first

9x-3y=3
-9x-24y=51+
0x-27y=54

-27y=54
divide both sides by -27
y=-2

sub back
3x+8y=-17
3x+8(-2)=-17
3x-16=-17
add 16 to both sides
3x=-1
divide 3
x=-1/3

(x,y)
(-1/3,-2)

Answer Link

Otras preguntas

Sort the questions based on whether they are better answered by an observational study or a controlled experiment.

Help please with number 10,11,and 12

You are attending a person who is unresponsive, gasping, and you feel a pulse what do you determine the problem is?

x^2 - 4 Find the roots

What is the solution to the system of linear equations? {2x+4y=203x+2y=26 Enter your answer in the boxes. ([],[])

Look closely at the two examples of Islamic art above. What type of Islamic art are both? Name each piece and its owner

In the equilibrium system below, which of the following changes would cause the equilibrium position to shift to the right? CO(g) + 3H2 (g) Two arrows stacked

What affects the size of an angle? A. The length of its sides B. The direction of one side C. Its orientation in space D. The amount of rotat

Which of the following is an integer multiple of the unit fractions 1/5? A. 3.5/5 B. 6/5 C. 1/4 * 1/5 D.(1/5)^3

which branch of goverment consuls senate or assembly had the most power