SOMEONE HELP ASAPPPP PLEASEEE,PLEASE EXPLAIN HOW U GOT YOUR ANSWER, I NEED AN EXPLANATION IN ORDER TO COMPLETE THIS! NO LINKS OR YOU WILL BE REPORTED, I WILL GIVE BRAINLIEST!!!!! I NEED THE ANSWER TODAY THIS ASSIGNMENT IS DUE TODAY

SOMEONE HELP ASAPPPP PLEASEEE,PLEASE EXPLAIN HOW U GOT YOUR ANSWER, I NEED AN EXPLANATION IN ORDER TO

Answers

Answer 1

Answer:

x = 5

Step-by-step explanation:

4x + 2y + z = 24

2x - 3y - z = 2

5x + y + 2z = 21

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

Eliminate z

Add the 1st and 2nd eqn

4x + 2y + z = 24

2x - 3y - z = 2

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

6x - 1y = 26 eqn A

Multiply the 2nd eqn by 2, then add the 3rd.

4x - 6y -2z = 4

5x + y + 2z = 21

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

9x - 5y = 25 eqn B

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

Now you have 2 eqns in 2 unknowns, not 3.

Multiply eqn A by 5 and subtract eqn B.

30x - 5y = 130 eqn A times 5

9x - 5y = 25 eqn B

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

21x = 105

x = 5

Answer 2

Answer:

x = 5 is the answer

Step-by-step explanation:


Related Questions

Other Questions
Who is the first king of Bhutan. I was floating by in the evening breeze when I got inhaled by a great big sneeze. Next thing I knew I wasinside to theon the right side. In London today, twice the low temperature was less than three timesthe low temperature minus ten. In interval form, what are the possibletemperatures? In calorimetry, energy is measured through heat transfer from one substance toanother. Which of the following is NOT a method of heat transfer? How many tenths are in 8.32? Angles of Triangles Scavenger Hunt Answer Key HELPPPPPPPPPPPP THIS IS A MEGA TEST Felicia pours 3/4 of a 2 1/2-liter bottle of chlorine solution into a swimming pool. Then, she measures out the liter of the remaining solution to use to clean the pool filter. How much chlorine solution is left in the bottle? Can you guys help me What word means a conclusion based on too little evidence or on exceptional or biased evidence? Did technology or migration play a more important role in industrial urbanization? 9. How is spring potential energy determined from a force versus position graph? What is the Hukou System (Law)? In 3-5 sentences, explain one characteristic of a gothic theme present in The Strange Case of Dr. Jekyll and Mr. Hyde. Who am i? What am i? I WILL GIVE BRAINLY IF CORRECTWhat can patient vital signs and symptoms tell us about what is happening in the human body? Make sure to list and describe the four major vital signs medical professionals use and how they are measure. A. 65B. 30C. 10D. 50 Solve log2 x = log5 3+1 by graphing. round to the nearest tenth Help me with this please Which sentence is punctuated correctly?O 1. The mermaid said, "I am not a fish."02. The mermaid said, I am not a fish."03. The mermaid said, I am not a fish.O 4. "The mermaid said," I am not a fish. Use the given Nernst equation and reaction to solve this problem. What is the potential of this cell with the given conditions?2Li (aq) + F2(g) 2Li+(aq) + 2F- (aq)E = +5.92 voltsT = 200C[Li+] = 10.0 molar[F-] = 10.0 molar