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
Agata [3.3K]
1 year ago
11

If A and B are 7 x 2 matrices, and C is a 4x7

Mathematics
1 answer:
Nata [24]1 year ago
5 0

Answer:

  A, B, D, F

Step-by-step explanation:

Matrix operations require that the matrix dimensions make sense for the operation being performed.

Matrix multiplication forms the dot product of a row in the left matrix and a column in the right matrix. That can only happen if those vectors have the same dimension. That is the number of columns in the left matrix must equal the number of rows in the right matrix.

Matrix addition or subtraction operates on corresponding terms, so the matrices must have the same dimension.

The transpose operation interchanges rows and columns, so reverses the dimension numbers. It is a defined operation for any size matrix.

<h3>Defined operations</h3>

A. CA ⇒ (4×7) × (7×2) . . . . defined

B. B -A ⇒ (7×2) -(7×2) . . . . defined

C. B -C ⇒ (7×2) -(4×7) . . . undefined

D. AB' ⇒ (7×2) × (2×7) . . . . defined

E. AC ⇒ (7×2) × (4×7) . . . undefined

F. C' ⇒ (7×4) . . . . defined

You might be interested in
Find the area of the surface generated by revolving the curve about the axis y = 9-x^2
Nat2105 [25]

The area of the surface generated by revolving the curve about the axis y = 9-x² is 12π

<h3>What is a revolution on a graph? or curve?</h3>

Surfaces of revolution are graphs of functions f(x,y) that rely exclusively on the distance from the origin of the point (x,y).

Polar coordinates (r,) are one approach to discuss such surfaces. A "surface of revolution" is formed by rotating a curve around an axis.

Consider a curve with coordinates x and z in the "x0" half of the Euclidean plane.

<h3>What is the calculation justifying the above answer?</h3>

y = √(9-x²)

⇒ dy = (-2x)/2√9-x²)

= -x/√(9-x²)

Note that surface area (s) is given as:

\int\limits^b_a {2\pi y} √1 + (dy/dx)² dx

= 2\pi \int_{1}^{-1} √9-x² * √[1 + (-x)/√9-x²)]dx

= 2π \int_{1}^{-1}3dx
= 6π [x]₋¹₁

= 6π (1-(-1)

= 6π (2)

= 12π

Learn more about revolving on a curve:
brainly.com/question/2293431
#SPJ4

6 0
1 year ago
-6÷1 1/3 as a word problem
erma4kov [3.2K]
A word problem? Then i think it should be negative six divided by eleven-thirds equals negative eighteen-eleventh’s.
4 0
3 years ago
What is the answer i need help 2*2+7+10*8-3=?
Ray Of Light [21]

Answer:

88

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
I need help please.
Norma-Jean [14]

Answer:

No

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
C=-7/15 and x=2/5 c-4x write your answer in simplest form
pogonyaev

9514 1404 393

Answer:

  -31/15

Step-by-step explanation:

Put the numbers in the expression and do the arithmetic.

  c-4x=-\dfrac{7}{15}-4\cdot\dfrac{2}{5}=-\left(\dfrac{7}{15}+\dfrac{8}{5}\right)\\\\=-\left(\dfrac{7}{15}+\dfrac{24}{15}\right)=\boxed{-\dfrac{31}{15}}

__

Your graphing calculator can probably help with this.

5 0
3 years ago
Other questions:
  • The width of a rectangle is 33 centimeters. The perimeter is at least 776 centimeters. Write and solve an
    9·1 answer
  • Given AC ≅ FE and CB ≅ ED which statement is correct?
    7·2 answers
  • A T-shirt costs 4 times as much as a pair of socks. A T shirt costs $16 Ifs the cost of a pair of socks
    10·2 answers
  • Nance is riding her bike to a friend’s house 4 and 1/2 miles away. She’s ridden 2 and 3/5 miles. How much farther does she need
    5·1 answer
  • Oder the Decimals below from least to greatest.<br><br> 2.09 2.9 2.19 2.009 2.901
    15·2 answers
  • Which expression is equal to 6(−3m)4​
    10·1 answer
  • Item 3
    13·1 answer
  • Can someone help me pls
    8·1 answer
  • (GIVING BRAINLYIST) What is 5 2/3 x 3/4?
    5·1 answer
  • Help pleaseeeeeeeeeee !!!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!