12edonoghue 12edonoghue
  • 10-03-2017
  • Mathematics
contestada

Solve the simultaneous equations 7x+5y=32
3x+4y=23

Respuesta :

nick321 nick321
  • 10-03-2017
3(7x+5y=32) and -7(3x+4y=23)
To make 21x+15=96 and -21x-28y=-161
Then add them to be -13y=-65
So y=-5
The substitute y
3x-20=23
3x=3
So x=1
Answer Link

Otras preguntas

Gary gets a $20 bonus for every computer he sells over and above his quota of 10 per week. If he sells n computers in a week and n > 10, write an expression
A verb form used to state a fact or ask a question is called the
If ce and fh are parallel line and mhgd = 118 what is mCDG
Which of the following must the inter-membrane region of an integral protein contain? A. Polar amino acids B. Nonpolar amino acids C. Small amino acids D. Large
Which phrases in the passage provide clues that trifling means "silliness” or "insignificance”? Check all that apply.
HELP ME PLS!!! Find the value of X.
THIS ISNT A MATH QUESTION BUT THERES A HUGE SPIDER NEXT TO ME WHAT DO I DO HELP
What features of EHRs are important to training specialists
Given m||n, find the value of x. (6x+3) (7x-19) Answer:
Which statement best describes the motion of particles in a solid? Particles in a solid never move. Particles in a solid vibrate around a fixed position. Ο Ο Ο