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
BlackZzzverrR [31]
3 years ago
11

PLEASE SHOW WORK I WILL GIVE BRAINLIEST!!! x-2y-2z=2 5x+2y-4z=-2 -5y-5z=0

Mathematics
1 answer:
mafiozo [28]3 years ago
7 0

Step-by-step explanation:

lets separate z from each equation

2z=x-2y-2

4z=5x+2y+2

5z=-5y

so

z=x/2-y-1

z=5x/4+y/2+1/2

z=-y

lets use the first and third equation

we have z=-y we replace this z at the first equation

-y=x/2-y-1 so x/2-1=0

x/2=1

x=2

now we replace z=-y and x=2 at the second equation so

-y=5*2/4+y/2+1/2

-y/2-y=5/2+1/2

-3y/2=6/2

-3y/2=3

-y/2=1

y=-2

we know that z=-y

so z =-(-2)=2

finaly we have that

x=2 ,y=-2 ,z=2

You might be interested in
a cone shaped container has a height of 9 inches and a diameter or 2in it is filled with a liquid that is worth $2 per cubic inc
Mice21 [21]

Answer:

$18.84

Step-by-step explanation:

The area of a cone is (1/3)pi*r^2*h

With all variables plugged in we get an area of (1/3)*3.14*(1^2)*9, or 9.42 cubic inches. With a value of 2$/in^3, we get 2*9.42, or 18.84.

Therefore, the value of the container is $18.84.

5 0
3 years ago
76/135 in simplest form
malfutka [58]
Already in simplest form (0.562963)
8 0
3 years ago
Please answer this relatively quickly, I'm not in very much of a rush but would like to get this done.
aksik [14]
The answers is X = 23
8 0
2 years ago
Read 2 more answers
The gardener sells half of his oranges plus three more to his first buyer. The gardener then sells half of his remaining oranges
Andrew [12]

Answer:

146

Step-by-step explanation:

5 0
4 years ago
A number is squared. The result is squared, then that result is squared. The final number is 6561
larisa [96]
The question is saying a number is square, then squared again, and finally square again, making that number squared itself up to 3 times. So we take 6561 and we square root it 3 times. Square root of 6561 is 81, square of 81 is 9, and finally square root if 9 is 3. The final answer is 3.

8 0
4 years ago
Other questions:
  • What basic trigonometric identity would you use to verify that sin^2x +cos^2x/cos x = sec x
    10·1 answer
  • How do I solve 2x+y=17 in slope intercept form?
    5·1 answer
  • Teams A and B are playing a series of games. The series is over as soon as a team wins a total of three games. Team A is two tim
    10·1 answer
  • The first choice box options are: about the same: much greater for conference a than b: much greater for conference b than a.
    6·1 answer
  • Can someone please answer this question. It’s not very difficult but I need to be certain I have the correct answer.
    8·1 answer
  • ANSWER PLEASE PLEASE PLEASE
    12·2 answers
  • Find the equation of the line <br> PLEASE HELP
    10·2 answers
  • Raja drove from A to B at an average speed of 50mph
    6·1 answer
  • 3. A cubic polynomial with rational coefficients has the roots 6+ Fo and. Find one additionalroot.
    14·1 answer
  • Heather and her friends want to buy tickets to the Harry Styles concert. Each ticket cost 85$ and parking cost 25$. Write an equ
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!