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
marysya [2.9K]
4 years ago
13

C) The determinant of 2 x 2 matrix A is 3. If you switch the rows and multiply the first row by 6 and the second row by 2, expla

in how to find determinant and provide the answer
Mathematics
1 answer:
crimeas [40]4 years ago
7 0

Answer:

Step-by-step explanation:

A 2 × 2 matrix has 2 rows and 2 columns

Let us assume that matrix A is expressed as

a b

c d

The determinant of matrix A would be

(a × d) - (b × c)

Given that the determinant of matrix A is 3, it means that

ad + bc = 3

If we switch the rows, the first row becomes cd and the second row becomes ab. If we multiply the first row by 6 and the second row by 2, the matrix becomes

6c 6d

2a 2b

The determinant would be

(6c × 2b) - (2a × 6d)

Determinant = 12bc - 12ad

You might be interested in
Write an equation of a line in point-slope and slope intercept form that passes through the point (1, -8) and is perpendicular t
prisoha [69]

Answer:

11y-2x= -90

Step-by-step explanation:

for the point (1,-8)

x=1 and y= -8

for the equation,

2x -4y= -11

x= -1/m

m= -1/x

x = -1/ (-11/2 )

m= 2/11

so for the equation,

y-y1= m(x- x1)

y- -8=2/11(x-1)

11(y+8)= 2(x-1)

11y +88= 2x-2

11y-2x= -90

3 0
3 years ago
ASAP!!! A proportional relationship is shown in the table below. X: 0 0.3 0.6 0.9 1.2 Y: 0 1 2 3 4 What is the slope of the line
Lera25 [3.4K]
The slope is 3/10, and just graph 2 points ( so like .3,1 and .9,2) and just use Desmos to figure out the line using the y=3/10x+3.64 and just type it in
7 0
3 years ago
Help ASAP !<br> Help ASAP !<br> Help ASAP !
Rzqust [24]

Answer:

21/40

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Need help with circle measurements in Geometry.
Ymorist [56]
I got 0.999 which is 999/1000
5 0
3 years ago
The measurements 45.367 cm and 43.43 cm are made in the same unit of measure. Which measurement is less precise? Explain your an
Kaylis [27]

Answer:

45.367 cm

Step-by-step explanation:

Approximating to a more number of decimal places gives a better estimation of the exact value.

For 45.367 cm, we approximated to three decimal places or five significant figures.

For 43.43 cm, the approximation is done to four decimal places.

Therefore the measurement 45.367cm is more precise because it has a relatively smaller error.

7 0
4 years ago
Other questions:
  • Sally opens a lemonade stand and sells 2x cups of lemonade for x number of days.Each cup of lemonade sells for y dollars.Sally w
    11·1 answer
  • There is a spinner with 15 equal areas, numbered 1 through 15. If the spinner is spun
    13·1 answer
  • Which property is demonstrated below?
    14·2 answers
  • What is the value of (f • g)(2)?
    8·1 answer
  • A bag contains 42 red marbles, 6 white marbles, and 8 gray marbles. You randomly pick out a marble, record its color, and put it
    13·2 answers
  • bright pools is building a rectangular pool at a new house. The perimeter of the pool has to be 94 feet and the length has to be
    14·1 answer
  • How to solve 18.912=2.4p
    14·2 answers
  • Choose all of the equations that are equivalent to 8k = 20. 8k – 4 = 20 + 4 8k ÷ 4 = 20 ÷ 4 8k × 3 = 20 × 3 8k + 10 = 20 + 10 8k
    7·1 answer
  • (4pts)
    10·1 answer
  • Help me if you can please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!