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
Akimi4 [234]
3 years ago
12

Given the following matrices, find 3A - 2B. (Hint: find 3A and 2B first and then subtract.)

Mathematics
1 answer:
nikklg [1K]3 years ago
3 0
A=  \left[\begin{array}{cc}1&3\\5&2\end{array}\right] 
\\
\\3A=\left[\begin{array}{cc}3&9\\15&6\end{array}\right] 
\\
\\B=  \left[\begin{array}{cc}4&9\\0&3\end{array}\right] 
\\
\\2B=  \left[\begin{array}{cc}8&18\\0&6\end{array}\right] 
\\
\\3A-2B=\left[\begin{array}{cc}3&9\\15&6\end{array}\right]- \left[\begin{array}{cc}8&18\\0&6\end{array}\right]=\left[\begin{array}{cc}3-8&9-18\\15-0&6-6\end{array}\right]=
\\
\\=\left[\begin{array}{cc}-5&-9\\15&0\end{array}\right]
You might be interested in
A study shows that, over the course of a lifetime, the average salary of college graduates is greater than the average salary of
iogann1982 [59]
Answer: The word "ensures" implies that it is certain.

In the case of the study, they simply found that the average salary is greater for college graduates. This doesn't mean that in every case the college graduate makes more money.

The problem is the word "ensures". Our study doesn't show certainty only a general pattern.
4 0
3 years ago
Read 2 more answers
How many square feet will cover a rectangle 60 feet by 20 feet
Alja [10]

Step-by-step explanation:

Answers

= 80 square feet

7 0
3 years ago
Read 2 more answers
Louis wants to carpet the rectangular floor of his basement. The basement has an area of 500 square feet. The width of the basem
Mazyrski [523]

Answer:

The correct answer is the length is 10 feet and width is 2 feet respectively.

Step-by-step explanation:

Let length of the rectangular floor of Louis' basement be l feet and width be \frac{l}{5} feet respectively.

Area of the basement floor is given to be 500 square feet.

Therefore according to the given problem,

l × \frac{l}{5}  = 500

⇒ l^{2} = 100

⇒ l = 10 ; [length cannot be negative]

⇒ b = 2

Thus the length and width be 10 feet and 2 feet respectively.

4 0
3 years ago
The sum of two consecutive integers is 7,903. What are the integers.
dimaraw [331]
The answer for the first question would be 3952+3952 =7903
5 0
3 years ago
Read 2 more answers
What is -7 to the second power
Paha777 [63]

Answer:

+49

Step-by-step explanation:

-7 x -7 = +49 because the negatives cancel out, resulting in a positive

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the estimate of 32034
    14·1 answer
  • Are the polygons similar? If they are, write a similarity statement and give the scale factor.
    6·1 answer
  • Greg has a container of building blocks that has 4 blocks in each row and 8 blocks in each column. How many
    12·2 answers
  • A plane can fly 260 miles downwind in the same amount of time as it can travel 170 miles upwind. Find the velocity of the wind i
    10·1 answer
  • If anyone know this can you help !
    12·2 answers
  • 5. What is the value of the missing angle?
    15·1 answer
  • Helpppp plssssss and thxxx
    15·2 answers
  • HELP DUE IN 10 MINS! Find the missing side measurement.
    5·2 answers
  • 3 values greater than |-3.5|
    10·2 answers
  • Use the midpoint formula to find the midpoint of a line (2,9) and (4,8)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!