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
prisoha [69]
3 years ago
10

Help please ............ solveSolve X-3y=z-x+2y=-3

Mathematics
1 answer:
Alenkasestr [34]3 years ago
8 0
You don't need 3 equations to get a general solution.  To do this use the equations x-3y-z=0 and -x+2y+0z= -3.  Start out by letting z = t.  Then solving those 2 equations simultaneously, your x's cancel out leaving you with -y-z=-3.  But since z=t, then -y=-3+t or y=3-t.  Now sub that in for y in the first equation, along with the fact that z=t to get x-3(3-t)-t = 0 and solve for x. x=9-2t.  So a general solution for this would be (9-2t, 3-t, t)
You might be interested in
Uf bguvhbacndkzvhsdvnjsdbsdvbs help
bagirrra123 [75]

Answer:

3 + 2 = 5

5 x 5 = 25(5^2 = 25)

25 - 7 = 18

Step-by-step explanation:

Solve in parenthesis first then do exponents then perform the subtraction.

Using PEMDAS it will be a LOT more easier.

6 0
3 years ago
Read 2 more answers
[Quick Answer Needed] Which of the following shows the extraneous solution to the logarithmic equation?
Nitella [24]

Answer:

C

Step-by-step explanation:

Given the logarithmic equation

\log_4x+\log_4(x-3)=\log_4(-7x+21)

First, notice that

x>0\\ \\x-3>0\Rightarrow x>3\\ \\-7x+21>0\Rightarrow 7x

So, there is no possible solutions, all possible solutions will be extraneous.

Solve the equation:

\log_4x+\log_4(x-3)=\log_4x(x-3),

then

\log_4x(x-3)=\log_4(-7x+21)\\ \\x(x-3)=-7x+21\\ \\x^2-3x+7x-21=0\\ \\x^2+4x-21=0\\ \\D=4^2-4\cdot 1\cdot (-21)=16+84=100\\ \\x_{1,2}=\dfrac{-4\pm 10}{2}=-7,\ 3

Hence, x=3 and x=-7 are extraneous solutions

6 0
2 years ago
A expression for x²+ 8x + 15
topjm [15]
(x+5) (x+3) if i am correct.. I dunno for sure
4 0
3 years ago
Which functions are the same as their inverse functions
9966 [12]

Answer:

what functions?

Step-by-step explanation:

4 0
3 years ago
Am I right or wrong?? ​
Slav-nsk [51]

Answer:

i think thats correct

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • In an A.P,the sum of first ten terms is -150 and the sum of next 10 terms is -550.Find the A.P
    15·1 answer
  • What is 40 over 100 as tenths in fraction form and decimal form.?
    14·1 answer
  • How many 3-yard straight pieces does Vince need altogether to build the three slides?
    9·1 answer
  • Last season a baseball play hit 48 home runs. So far this season he has hit 30 home runs. The number of home runs he has hit so
    7·1 answer
  • Can someone answer my question plz it's in the picture and will give u 25 extra points and your answer as the best so someone pl
    12·2 answers
  • Determine weather it is no solution many solutions or one solutions <br> 3(6-4m)=2(9-6m)
    8·1 answer
  • PLEASE HELP !!! WILL MARK BRAINLIEST TO WHOEVER GETS IT RIGHT !!
    9·2 answers
  • Please help with this quick! Your answer will be appreciated or be given a thanks and a 5 star! If 2 people answer and yours mak
    14·1 answer
  • Geometry triangle help pls
    12·1 answer
  • Helpppp!! right answer only pleaseee
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!