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
goblinko [34]
3 years ago
8

What is the value of d21+d22+d23 given the matrix equation below?

Mathematics
1 answer:
sleet_krkn [62]3 years ago
5 0

Answer:

B. 8

Step-by-step explanation:

The question lacks the required diagram. Find the diagram in the attachment.

Before we can find d21, d22 and d23, we need to get the matrix D first as shown in the attached solution.

On comparison as shown in the attachment, d21 = 11, d22 = -10 and d23 = 7

Note that d21 refers to element in the second row and first column of the matrix

d22 is the element in the second row and second column of the matrix

d23 is the element in the second row and third column of the matrix

d21+d22+d23 = 11-10+7

d21+d22+d23 = 8

The second option is correct.

You might be interested in
On a scale drawing, a bookshelf is 8 inches tall. The scale factor is 1/8. What is the height of the bookshelf?
lukranit [14]
8 inches = 1/8 of the real height of the book shelf
Multiply 8 by 8 because the question shows 1/8 of the book shelf
8x8=64
The book shelf is 64 inches.
Or 5 feet and 4 inches.
6 0
3 years ago
Combime like terms to create an equivalent expression -2.5(4x-3)​
Ann [662]

Answer: -10x+7.5

Step-by-step explanation:

First multiply -2.5(4x)= -10x and then -2.5x-3= 7.5 it should be -10x+7.5

3 0
3 years ago
What if i had 2 ducks and add 4 more​
Travka [436]

Answer:

You would have 6 ducks

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
I will mark brainlyest plss helpp
lana [24]

Answer:

The answer is C

Step-by-step explanation:

i also use khan

5 0
2 years ago
Read 2 more answers
50 points if you get correct!!! PLEASE HELP ASAP!!!! Hypothesis: Water is always denser than oil and we can test this by pouring
oksano4ka [1.4K]

Answer:

I believe the answer is A.

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Five times a number is divided by 7 more than the number. If the result is 2 then what was the original number?
    14·1 answer
  • How are the partial products 280 and 21 related to 301
    8·1 answer
  • The formula c = 5p + 200 relates c, the total cost in dollars of hosting a birthday party at a skating rink, to p, the number of
    12·2 answers
  • #2, can someone help me with this question?
    12·2 answers
  • 15% of 60 is how much
    11·2 answers
  • I really need help please help me with this​
    13·1 answer
  • Find the zeros of the function f(x) = -1.6x2 + 18x – 47 to the nearest<br> hundredth.
    8·1 answer
  • Thank you! :) .. hope u have a nice weekend as well
    15·2 answers
  • Please help me♡
    8·1 answer
  • What is the answer of:<br><img src="https://tex.z-dn.net/?f=2%20%5Cdiv%203%20%20%2B%20%20%5Csqrt%7B5%7D%20" id="TexFormula1" tit
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!