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
Leno4ka [110]
2 years ago
9

PLS HELP (30 points) Can you answer this Q???

Mathematics
1 answer:
Liula [17]2 years ago
4 0

Answer:

8 I dont know

Step-by-step explanation:

You might be interested in
Solve the system of equations using matrices. Use the Gauss- Jordan elimination method And find a solution set
KATRIN_1 [288]
\begin{gathered} x+y+z=4 \\ x-y-z=0 \\ x-y+z=8 \\ \text{The system using matrix is} \\ \begin{bmatrix}{1} & {1} & {1}, & {4} \\ {1} & {-1} & {-1,} & {0} \\ {1} & {-1} & {1,} & {8}{}{}\end{bmatrix}\rightarrow F2=F2-F1=\begin{bmatrix}{1} & {1} & {1}, & {4} \\ {0} & {-2} & {-2,} & {-4} \\ {1} & {-1} & {1,} & {8}{}{}\end{bmatrix} \\ \rightarrow F3=F3-F1=\begin{bmatrix}{1} & {1} & {1}, & {4} \\ {0} & {-2} & {-2,} & {-4} \\ {0} & {-2} & {0,} & {4}{}{}\end{bmatrix}\rightarrow F2=-\frac{1}{2}F2 \\ =\begin{bmatrix}{1} & {1} & {1}, & {4} \\ {0} & {1} & {1,} & {2} \\ {0} & {-2} & {0,} & {4}{}{}\end{bmatrix}\rightarrow F3=F3+2F2=\begin{bmatrix}{1} & {1} & {1}, & {4} \\ {0} & {1} & {1,} & {2} \\ {0} & {0} & {2,} & {8}{}{}\end{bmatrix}\rightarrow F3=\frac{1}{2}F3 \\ =\begin{bmatrix}{1} & {1} & {1}, & {4} \\ {0} & {1} & {1,} & {2} \\ {0} & {0} & {1,} & {4}{}{}\end{bmatrix}\rightarrow F2=F2-F3=\begin{bmatrix}{1} & {1} & {1}, & {4} \\ {0} & {1} & {0,} & {-2} \\ {0} & {0} & {1,} & {4}{}{}\end{bmatrix} \\ \rightarrow F1=F1-F3=\begin{bmatrix}{1} & {1} & {0}, & {0} \\ {0} & {1} & {0,} & {-2} \\ {0} & {0} & {1,} & {4}{}{}\end{bmatrix}\rightarrow F1=F1-F2 \\ =\begin{bmatrix}{1} & {0} & {0}, & {2} \\ {0} & {1} & {0,} & {-2} \\ {0} & {0} & {1,} & {4}{}{}\end{bmatrix} \\ \text{Therefore, the solution is }x=2,\text{ y=-2 and z=4} \end{gathered}

6 0
1 year ago
I really need help with this, if someone would help me I would be really grateful. MUST SHOW WORK!!! Please don't answer if you
vichka [17]
To convert Fahrenheit to Celsius, subtract 32 degrees and divide by 1.8.
<span>To convert Celsius to Fahrenheit, multiply by 1.8 and add 32 degrees.

</span>
7 0
3 years ago
If US $1.00 is equivalent to EC $ 2.70, how much in US would one get from EC 297.00?
Vedmedyk [2.9K]
NEEED POINTS ..





xx ‘zmsms
4 0
3 years ago
A) 7xy?<br> Degree and number of terms
jolli1 [7]

Answer:

1 and 1

Step-by-step explanation:

degree of 1 and 1 term.

8 0
3 years ago
Which expression results from using the Distributive Property? 2(5 + 3r)
Natasha_Volkova [10]

Answer:

6r + 10

Explanation:

2(5 + 3r)

= (2)(5 + 3r)

= (2)(5) + (2)(3r)

= 10 + 6r

= 6r + 10

5 0
2 years ago
Other questions:
  • 2+4 vngfhgffbhdhfjgjdgjdfjdd
    7·2 answers
  • 10% of what number is 10?
    9·1 answer
  • What is the solution to this inequality 17+x is greater than or equal to 33
    14·2 answers
  • Given: Prove: Proof: Question 14 of 24 What is the missing reason in the proof? segment addition Congruent Segments Theorem Tran
    15·1 answer
  • The perimeter of a rectangular field is 294 yards. If the length of the field is 85 yards, what is its width?
    7·2 answers
  • 0.6 of the Chang family expenses are for internet service what fraction of the family's expenses is for internet service put the
    7·1 answer
  • *EASY 7TH GRADE MATH*
    5·1 answer
  • Alice says that all the factors of 8 are even.
    9·1 answer
  • Tesfa is x years old. his father is 4 times as old as Tesfa. Her mother is 7 years younger than his father. If their three ages
    12·1 answer
  • Which of these numbers are divisible by 5?<br> 32 51 45 20 18
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!