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
andreyandreev [35.5K]
3 years ago
9

The size of matrices a and b are given. Find the sizes of ab and ba whenever they are defined. (if an answer does not exist, ent

er dne.) a is of size 6 ✕ 7, and b is of size 7 ✕ 8.
Mathematics
1 answer:
Julli [10]3 years ago
7 0

We have been given two matrices a and b. A has 6 rows and 7 columns, while b has 7 rows and 8 columns.

Since we know that order matters in matrix multiplication. In order for matrix multiplication to be defined number of columns in the first matrix should be equal to the number of rows of in the second matrix.

We can see that number of columns in matrix a and number of rows in matrix b is 7.

Therefore, size of ab will be equal to number of rows of matrix a and number of columns of matrix b that is 6 by 8.

Now we will see whether ba is defined or not. We can see columns in matrix b are 8 and rows in matrix a are 6, which is not equal. So we can say that ba is not defined.

Therefore, size of ba is not defined (dne).


You might be interested in
Help!! Whoever tries gets brainliest!
Rzqust [24]

Answer:

q: quarters, 2q, 2q + 22, & 3(2q+22)

Step-by-step explanation:

A: The variable “q” will be the number of quarters

B:

2q will be the numbers of dimes

2q+22 will be the numbers of nickels

3(2q + 22) will be th number of pennies

7 0
3 years ago
This graph shows a proportional relationship. What is the constant of proportionality? Enter your answer as a ratio in simplifie
AnnyKZ [126]

The answer is 5/4. I just took the test.

4 0
3 years ago
Read 2 more answers
Find the angle complementary to the angle 80°. A. 90° B. 180° C. 10° D. 100°
Alex_Xolod [135]

Complementary Angles is a pair of any two acute angles that add up to make 90 degrees


90-80 = 10

 the angle is 10 degrees

C is the correct answer

4 0
3 years ago
Read 2 more answers
PLEASE ANSWER + BRAINLIEST!!!!
Nookie1986 [14]
Plug in 6 for x and solve out for f(x)
8 0
3 years ago
Joshira makes and sells crafts.
Maksim231197 [3]

Answer: 6

Step-by-step explanation:

i think joshira makes 6 item in 8 hours.

i got my answer by multiplying 3/4 with 8

7 0
3 years ago
Read 2 more answers
Other questions:
  • 27 millimeters multiplied by 1 cm/10 mm
    8·1 answer
  • Mark earns 22% commission on his sales. If his sales were $300, how much commission did he earn!
    6·1 answer
  • Can somebody help me with my math?
    11·1 answer
  • Write the point -slope form of the equation of each line given the slope and y-intercept. Slope=(2/3), y-intercept =0
    7·1 answer
  • In the forest were lions and tigers and bears. The ratio of lions to tigers was 4 to 5. The ratio of tigers to bears was 3 to 5.
    13·2 answers
  • A student gets 17 out of 20 questions correct on a test. What percent of questions did student get correct?
    10·2 answers
  • Rashawn kept a record of how many hours he spent listening to music for 6 days during school vacation and displayed his results
    11·2 answers
  • First choose the appropriate inequality symbol and then drag and drop numbers into the
    6·1 answer
  • Find the quotient of 1/4 divided by 3/8​
    12·2 answers
  • Can someone please click on my profile and answer my history question please!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!