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

Angad, Caroline and Sarah share some sweets in the ratio 7:4:3. Angad gets 52 more sweets than Sarah. How many sweets does Caroline get?

5. 4 5 6 7 Weight (lb) Cost (5) 18 22.5 27 31.5 6. 1 2 3 4 Time (h) Distance (mi) 35 80 120 145

The owner of Animal Lovers Pet Shop has a total of 153 parakeets in 3 cages. Could each cage hold the same number of parakeets?

Which of the following is part of the plot of The True Confessions of Charlotte Doyle? the dirt and grime of the ship Zachariah’s dirty appearance Charlotte tra

Why did Roger became willing to accept Mrs. Bates help (in the short story, "Thank You M'am")? 1.) no one ever taught him right from wrong 2) he knew it was a n

If you had a chance to address the nation, what would your speech be

you spin the spinner below one time.what is the probability of getting greater than it equal to three?P(greater than or equal to three)

25 — m if m = 9 Can someone please help me I suck at math

Trigonometry, IF answer is delivered on time WILL give BRANLIEST

MOLE TO ATOM CONVERSIONS More Practice: Calculate the number of molecules present in: 1) 0.680 moles of H2S 2) 8.96 moles of KI 3) 6.500 moles of KCIO 4) 0.950