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
-Dominant- [34]
2 years ago
6

Find the value of each determinant: Help!

Mathematics
1 answer:
icang [17]2 years ago
5 0

Answer:

Matrix  1:  -4269

Matrix 2:  1768

Matrix 3:  647.3561

Step-by-step explanation:

Matrix 1: (7*19)-(31*142)=-4269

Matrix 2:  1768

\left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right]

Determinant = a(ei-fh)-b(di-fg)+c(dh-eg)

Matrix 3:  647.3561

\left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right]

Determinant = a(ei-fh)-b(di-fg)+c(dh-eg)

You might be interested in
Find the value of x in the parallelogram below.
Dennis_Churaev [7]

Answer:

129

Step-by-step explanation:

the 2 angles together will equal 180 because that is half of a circle a circle is 360so what you do is subtract 180 minus 51 and get 129

8 0
3 years ago
Solve the inequality. Graph the solution. <br><br>-1/3 (p+9) ≤ 4
goldenfox [79]
Answer: p is greater than or equal to -21

6 0
3 years ago
Read 2 more answers
NO LINKS OR ANSWERING WHAT YOU DON'T KNOW!!!!!
pochemuha

Answer:

Problem 7) C

Problem 8) B

Step-by-step explanation:

Recall that inverse variation has the form:

\displaystyle y=\frac{k}{x}

Where <em>k</em> is the constant of variation.

Problem 7)

We are given that <em>y</em> = 39 when <em>x</em> = 1/3. Thus:

\displaystyle 39=\frac{k}{{}^{1}\!/ \!{}_{3}}

Solve for <em>k: </em>

<em />\displaystyle k=\frac{1}{3}(39)=13<em />

<em />

Hence, our equation is:

\displaystyle y=\frac{13}{x}

Then when <em>x</em> = 26, <em>y</em> equals:

\displaystyle y=\frac{13}{(26)}=\frac{1}{2}

Problem 8)

We are given that <em>y</em> = 25 when <em>x</em> = -1/5. Thus:

\displaystyle 25=\frac{k}{-{}^{1}\!/ \!{}_{5}}

Solve for <em>k: </em>

<em />\displaystyle k=-\frac{1}{5}(25)=-5<em />

<em />

Hence, our equation is:

\displaystyle y=-\frac{5}{x}

6 0
3 years ago
what is the probability of flipping a coin 10 times and getting tails8 times? Round your answer to the nearest tenth of a percen
slava [35]
The answer is 8/10 and that simplified is 4/5
4 0
3 years ago
Aashi has a block of colored wax. The block is a right rectangular prism measuring 10 cm long by 18 cm wide by 3cm tall. She mel
Anna71 [15]

Answer:60

Step-by-step explanation:

10*18=180/3=60


(brainly patrol please don’t delete)

5 0
3 years ago
Other questions:
  • Please Help!<br> What is m
    5·2 answers
  • I’m really bad at math lol someone help
    11·1 answer
  • A diver went 3 feet below the surface of the water and tagged a rock with a flag, and then went down an additional 2 feet to tag
    15·1 answer
  • Jessica drank 1/8 gallon of orange juice
    12·1 answer
  • What is 4,952 rounded to the nearest hundred?
    5·2 answers
  • freed a paid $126 for groceries this week. this was 1 1/4 as much as the paid the previous week. how much did she pay last week
    8·1 answer
  • Mrs. Lenz rented a scooter during her beach vacation. The cost of the scooter rental is shown for different periods of time. Wha
    7·1 answer
  • Can you find the y=mx+b?
    9·1 answer
  • Someone help me please <br> 13x+7<br> 9x+9
    15·2 answers
  • You need 1 1/4 cup of sugar to make 20 cookies to make 12 cookies how much sugar do you need​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!