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
Angelina_Jolie [31]
3 years ago
8

Calculate the value for each determinant:

Mathematics
1 answer:
Dafna1 [17]3 years ago
4 0

Answer:

See explanations below

Step-by-step explanation:

Example of how to find the determinant of a 2×2 matrices is as shown;

\left[\begin{array}{ccc}a&b\\c&d&\end{array}\right]

= (a*d)-(b*c)

= ad - bc

Applying this to solve the given questions

1) (3*4) - (-3*-1)

= 12 - (3)

= 9

2) (-12*5)-(-1*12)

= -60 - (-12)

= -60+12

= -48

3) (0*4)-(-1*17)

= 0-(-17)

= 0+17

= 17

4) (8*-1)-(-4*-1)

= -8-(4)

= -8-4

= -12

5) (2*-1)-(2*-1)

= -2-(-2)

= -2+2

= 0

6) 1(1) - 0(0)

= 1 - 0

= 1

You might be interested in
Convert 68°C to degrees Fahrenheit. If necessary, round your answer to the nearest tenth of a degree
Karolina [17]

Answer: 154.4 Fahrenheit

Step-by-step explanation: 68°C = ( 68× 9 / 5 + 32 ) = 154.4°F

6 0
3 years ago
A store bought 300 toys at a cost of ​$24 each. The store sold all the toys at a percent markup of . Find the total selling pric
BlackZzzverrR [31]

Answer:

Step-by-step explanation:

You will have to write out the following:

25% of 24= ?

Then go ....turn 25 into a decimal

.25 x 24

24

x.25

——— ——) Which equals 6

Follow these steps on any one and as long as ur multiplication is right the answer will be right

3 0
3 years ago
PLEASE HELP 25 POINTS<br> Evaluate 4(3 - 1)^2<br> O A. 16<br> O B. 128<br> O C. 64<br> O D. 32
balandron [24]
The answer is 16 bc yeah i said it was
6 0
3 years ago
How much of the 8% solution should we use to make 100g of a 3% solution?
sp2606 [1]
Suppose x grams of 8% solution should be mixed to make 100 g of 3% solution.
here we shall have:
the amount of 3% solution in the 100 g will be:
3/100*100=3 grams
the the equation will be, 8% of what quantity becomes 3g?
(8/100)*x=3
hence solving for x we shall have:
0.08x=3
x=3/0.08
x= 37.8 grams
The implication of this is that, when you have 37.5 grams of 8% solution, that will contain 3  of pure chemical and hence when you add more solvent on top of 37.5 g until you reach 100g, that will be 3% solution.
8 0
3 years ago
Read 2 more answers
What is the general equation of a sine function with an amplitude of 6, a period of StartFraction pi Over 4 EndFraction, and a h
Katen [24]

Answer:

C: y = 6 \sin (8(x-\frac{\pi}{2} ))

Step-by-step explanation:

Amplitude is changed by multiplying the entire trig function by a number, by default the amplitude is 1, so multiplying by 6 is necessary; eliminate A and B

Horizontal shift is going through the x axis, so it must be subtracted from the x value. This is only seen in choice C of the remaining answers.

Calculating the period isn't necessary because we already found the right answer but in case you need it in the future; the period is by default 2pi, to get to pi/4, it had to be 8 times smaller, so multiplying x and translations on x by 8 will get you the correct period.

3 0
3 years ago
Read 2 more answers
Other questions:
  • A dog eats 7 cans of dog food in 3 days at this rate how many cans of food does the dog eat in 3+ d days
    6·2 answers
  • Larry received 1/3 pound of candy from his grandmother and 2/5 pound of candy from his best friend. Larry’s sister ate 1/2 pound
    9·1 answer
  • Plz help ASAP!!! ill award brainliest!!!
    5·1 answer
  • Solve this equation Algebraically
    7·2 answers
  • Rx h= ax-k solve for x
    9·1 answer
  • Michelle purchased a kids table with a square top. if the area of the square top is 400 inches, what is the length of one of the
    12·2 answers
  • Eugene can type 55 words per minuet. Allen can type 80 words in 2 minuets. If Eugene and Allen each type for 30 minuets, how man
    15·1 answer
  • A jewelry designed a new box for earrings. The box is to be covered in leather. How much leather will be needed?
    13·1 answer
  • Help please for 20 points i need rn
    12·1 answer
  • Help help help help help
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!