mickey5 mickey5
  • 12-03-2015
  • Mathematics
contestada

solve the system using elimination. 3x+2y=17, 2x+5y=26

Respuesta :

naǫ
naǫ naǫ
  • 12-03-2015
[tex]3x+2y=17 \ \ \ |\times (-2) \\ 2x+5y=26 \ \ \ |\times 3 \\ \\ -6x-4y=-34 \\ \underline{6x+15y=78 \ \ \ \ \ } \\ 15y-4y=78-34 \\ 11y=44 \ \ \ |\div 11 \\ y=4 \\ \\ 3x+2y=17 \\ 3x+2 \times 4=17 \\ 3x+8=17 \ \ \ |-8 \\ 3x=9 \ \ \ |\div 3 \\ x=3 \\ \\ \boxed{(x,y)=(3,4)}[/tex]
Answer Link

Otras preguntas

What is the current value of a $1000 Treasury inflation-protected security if the reference CPI is 203.19 and the current CPI is 205.47? The coupon rate is 3 pe
It says round all calculations to one decimal point Pls show workings it due in a hour
Can anyone help me with these questions? TIA!!
Joshua is writing a novel. He wrote the same number of pages each day for a 8 days. At the end of 8 days he had 136 pages complete. Write an equation relating x
Susana walks 1/4 of a mile every thirty minutes. How far did she walk in 1 hour?
The expression -320+15y represents a submarine that began at a depth of 15 feet below sea level and ascended at a rate of feet per minute. What was the depth of
Does anyone know the answer to this?
A 62 kg student, starting from rest, slide down an 10.6 m high water slide. How fast is he going at the bottom of the slide? Use g = 10 m/s2
Help plz. Correct answer will be brainiest!!!
X-rays carry a small risk of damaging DNA which can lead to cancer. Why are they still used by doctors?