robert122894 robert122894
  • 03-11-2019
  • Mathematics
contestada

Solve the system using the addition method. State your solution as an ordered pair.

3x+2y=56
9x-2y=4

Respuesta :

altavistard
altavistard altavistard
  • 15-02-2021

Answer:

The solution as an ordered pair is (-11/9, -15/2)

Step-by-step explanation:

Multiply the first equation by -3.  The resulting system is then

-9x - 6y = 56

9x - 2y = 4

--------------------

 -8y = 60, or y = -7.5.  From the second equation and this result y = -7.5, we know that 9x - 2(-7.5) = 4, or 9x = -15 + 4, or 9x = -11.  Then x = -11/9.  The solution as an ordered pair is (-11/9, -15/2).

Answer Link

Otras preguntas

what is 4x squared minus 3x to the 5th plus x
What are the 5 Great Lakes?
what do planets and stars have in common
Where would you look for glacial grooves in the 300 million year old rock of Antartica?
Rewrite the following in terms of ln 2, ln 3, and ln 5. Then use ln 2=0.693, ln 3=1.099, and ln 5=1.609. 1. ln 6 2. ln (10/3) 3. ln 30 4. ln 12 5. ln (2/5) 5. l
Which one of the following molecules is a by-product of cellular respiration? A. Glucose B. Water* C. Oxygen D. Pyruvate
An experiment requires 40.0g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense
A hotel has 56 guests. 35 of the guests are male. Work out 35 out of 56 as a percentage.
Jerome is writing a number in scientific notation. The number is greater than one million and less than ten million. What will be the exponent in the number Jer
What is 0.1 repeating as a fraction?