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

What four-letter word can be written forward, backward, or upside down, and can still be read from left to right?.

Which supporting reason for the claim shown is most clearly a premiše? In other words, which option uses deductive reasoning? Claim: Our school should remove th

Click on the box next to each conjunction that makes sense in the sentence below. The old man sat quietly, _____ he watched the children play. A: and B: nor C:

What are some good transition words/phrases for essay writing?.

what is this please help

The graph of △UVW has coordinates U(−4, 2) , V(−1, 1) , and W(−5, −4) .

1.2.2 If aunt Abby needs 625ml of flour, determine how many wedding cakes she can bake with a 2 kg flour.

Sophie's math teacher plots student grades on their weekly quizzes against the number of hours they say they study on the pair of coordinate axes and then draw

Which transformation would take Figure A to Figure B?

Which polygon has an interior angle sum of 1080°?