1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Murrr4er [49]
3 years ago
15

Which expression gives the z-coordinate of the solution of the system x+2y-2z=3?

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
3 0
From the system of equation
x+2y-2z=3
3x-y+z=16
x+z=7
we solve the system as follows:
add equation i and ii
x+2y-2z=3
6x-2y+2z=32

7x=35
x=5
thus
z=2

2y+5-4=3
2y=2
y=1

hence
x=5, y=1 z=2
You might be interested in
Which of the following World Record times from Track and Field is least
mart [117]
I think the answer is B. Or A.
7 0
2 years ago
X^2-9x=x-9 solve by factoring
lbvjy [14]
(x-1)(x-9)
Hope this helps
8 0
3 years ago
Using the graph as your guide, complete the following statement.
ollegr [7]

Answer:

positive

Step-by-step explanation:

the discriminant of the function is postive.

because from the graph we notice that it has 2 intercepts on x-axis, which means the function has 2 real solution when y=0

that implies the discriminant is positive.

\Delta = \sqrt{b^2-4ac}

if \Delta > 0 we have 2 distinct real solution

if \Delta we have no real solution but 2 complex solutions

if \Delta = 0 we have 2 identical real solution

7 0
3 years ago
Explain why 1/3 is or isnt an irrational number
Afina-wow [57]

A number that cannot be expressed that way is irrational. For example, one third in decimal form is 0.33333333333333 (the threes go on forever). However, one third can be express as 1 divided by 3, and since 1 and 3 are both integers, one third is a rational number.

hope it helps!

5 0
3 years ago
What is 1 + 2 I really need this answer my grades depend on it!!!
babunello [35]

Answer:

3 is the answer 1 + 2 is the same as 1 + 1 + 1=3

hope this helps

have a good day :)

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • A menu has 9 options, chicken, steak, fish, broccoli, spinach, two types of carrots and two breads, what is the complement of or
    8·1 answer
  • Which number line can be used to find the distance between (4, -1) and (8,-1)?
    11·2 answers
  • Company B loses $1,575 for every employee who quits before 90 days. What is the total amount the company will lose if 2 employee
    12·1 answer
  • A chain saw requires 7 hours of assembly and a wood chipper 3 hours. a maximum of 63 hours of assembly time is available. the pr
    11·1 answer
  • Please someone help i dont know this :(
    8·2 answers
  • Debbie needs to fill juice cups for her little brother's birthday party. There are 20 juice cups and each juice cup holds 10 flu
    11·1 answer
  • A 32 foot ladder is leaning against a building and forms a 29.37 angle with the ground how far away from the building is the bas
    11·2 answers
  • Y=2x−1<br> 5x−4y=1<br> ​ <br> yes or no?
    14·1 answer
  • 7. Carolina surveyed students about their
    14·1 answer
  • What is X=? // which choice is correct ? (Ignore my guessing choice mark)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!