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
klasskru [66]
3 years ago
12

What is the value of matrix B if A + B = C

Mathematics
2 answers:
konstantin123 [22]3 years ago
7 0

Answer:b

Step-by-step explanation:

dusya [7]3 years ago
3 0

Answer:

B

Step-by-step explanation:

When adding two matrices of the same dimensions we addup each two corresponding elements of these matrices:

A+B=\left[\begin{array}{cc}8&-3\\3&y+2\end{array}\right]+\left[\begin{array}{cc}3x&z+4\\w&\frac{1}{2}y\end{array}\right]=\left[\begin{array}{cc}8+3x&-3+z+4\\3+w&y+2+\frac{1}{2}y\end{array}\right].

When two matrices are equal, then corresponding elements are equal:

\left\{\begin{array}{l}8+3x=x\\-3+z+4=2z\\3+w=4\\y+2+\frac{1}{2}y=y\end{array}\right.\Rightarrow \left\{\begin{array}{l}x=-4\\z=1\\w=1\\y=-4\end{array}\right.

Hence,

B=\left[\begin{array}{cc}-12&5\\1&-2\end{array}\right].

You might be interested in
How is everyone? My power went out
cupoosta [38]

Answer:

Good! thanks

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The equation 3s equals 21 can be used to find the number of students s and each van on a field trip how many students are in eac
zubka84 [21]
3s=21
s=7
7 students are in each van.
6 0
3 years ago
The equation below describes a proportional relationship between x and y. What is the constant of proportionality? Y=4/7x
FromTheMoon [43]

Answer:

the given equation is y=4/7x

reciprocating both sides you get y/x =7/4

now x and y are directly porportional to each other so

x=ky where k is the constant

or x/y=k ......................(2)

equating 1 and 2

k=7/4

Step-by-step explanation:

4 0
2 years ago
Alice likes to go to Main Event to play laser tag and climb the rock wall each Saturday. Instead of purchasing the play pass, Al
cluponka [151]

Answer:

C

Step-by-step explanation:

5 0
3 years ago
Which choice is a net of a triangular pyramid?<br> A<br> B<br> C
gayaneshka [121]
I think it A... But if it not sorry I didn’t help... hope this is the answer I am sure it is...
4 0
2 years ago
Other questions:
  • If you were decreasing an amount by 3%, what would the single multiplier be?
    5·1 answer
  • Bill wants to rent a car. Rental Company A charges $35 per day plus $0.10 per mile driven. Rental Company B charges $25 per day
    11·1 answer
  • Where does the graph of the linear equation, y = 1/2 x - 3, cross the y-axis?
    12·2 answers
  • -7d - 3 = 11<br>what's the answer please ​
    11·2 answers
  • Can someone help me with these questions
    9·1 answer
  • If 3 is added to twice a number the result is 17
    15·1 answer
  • THE VOLLEYBALL TEAM WON 80% OF THE GAMES THEY PLAYED THIS SEASON. THE
    13·1 answer
  • HELP WHAT STEPS DO I NEED TO DO TO SOLVE : <br> (2+(-3)(5))(3+2(-6))
    12·2 answers
  • How can you subtract similar fraction,dissimilar fraction and mixed number?​
    14·2 answers
  • Valentina's parents are planning a trip to the Typhoon Towers resort. They plan to get a 6-day Fun Pass, which will give Valenti
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!