Question
Suppose J=[−1428].

What is the value of ∣∣J∣∣?

Enter your answer in the box.

QuestionSuppose J=[1428].What Is The Value Of J?Enter Your Answer In The Box.

Answers

Answer 1

Answer: |J|= -16

Step-by-step explanation:

Answer 2

The value of ∣J∣ is -16.

What is matrix?

A collection of numbers lined up in rows and columns to form a rectangular array is called a matrix. The elements, or entries, of the matrix are the numbers.

Given:

[tex]J = \left[\begin{array}{ccc}-1&4\\2&8\end{array}\right][/tex]

To find the value of ∣J∣:

We have to find the determinant of matrix J.

Multiply the numbers along the diagonal from top-left to bottom-right.

Multiply the numbers along the diagonal from bottom-left to top-right.

The second product is subtracted from the first.

Get the 2-by-2 determinant's value via simplifying.

∣J∣ = {(-1x8) - (2x4)}

∣J∣ = {-8 - 8}

∣J∣ = -16

Therefore, the value of ∣J∣ is -16.

To learn more about the matrix;

https://brainly.com/question/29132693

#SPJ2


Related Questions

A)
What are the coordinates of the vertex C'
B)
What is the length of the side A'B'?

Answers

Answer:

(4 , 1)

Step-by-step explanation:

This is because to find the coordinate on a graph, it is written as ( x , y) and x is on 4 and y is on 1.

that's my opinion.

Nice question

pls help im faling geometry

Answers

Side |CB|:

Sin(60)= opposite side / hypotenuse
We know hyp=10
And opposite side =|CB|

=sin60= opp/10

So multiply both sides by 10
10sin60 = opp

|CB| = 10 (√3 ÷ 2) = 5 √3


Then we can use Pythagoras theorem to get the other side (or we can do the same thing as before using either cos60 or sin30 =|BA| /10)

a² + b² = c² where c is the hypotenuse

(5 √3)² + b² = 10²

(25)(3) + b² = 100
75+ b² = 100

-75 from both sides

b² = 25
So b = |BA| = √25 = 5

At the beginning of the month, Adam had 174.85 in his checking account. He wrote the following transactions in his checkbook for the month.. 58.00, -316.38, 102.96 What is Adams's account balance at the end of the month

Answers

Adam's account balance at the end of the month is 19.13 dollars.

The amount present in Adam's bank account at the beginning of the month is $174.85.

The transactions he wrote are,

58.00

-316.35

102.96

The Transactions which have positive sign are credit amount and the transaction with negative sign are debit amount.

We can write,

The balance at the end of the month = Initial balance present + Credit amount + debit amount

So, balance in Adam's account can be found by simple addition and subtraction,

Balance = 174.85 + 58.00 + 102.96 - 316.38

Balance = 335.81 - 316.68

Balance = 19.13

The amount in Adam's bank account at the end of the month is 19.13 dollars.

To know more about addition and subtraction, visit,

https://brainly.com/question/20724405

#SPJ1

whats the opposite of -4

Answers

Answer:

The opposite of an integer and negative number is a positive integer number. In this case, the opposite of -4 is +4.

Which of the relationships below represents a function with a greater rate of change than the function y = -1/4x-4?

Answers

Given the function:

[tex]y=-\frac{1}{4}x-4[/tex]

The given function is a linear function

The rate of change of the linear function = the slope of the function

The slope = the coefficient of x = -1/4

So, from the given options, you will select the function that has a slope that is greater than (-1/4)

PLS HELP ME OUT I WILL MARK YOY BRAINLEIST IF CORRECT

Answers

42 ft.

The volume of a right pyramid uses the formula (1/3)(length)(width)(height). Insert known values and solve.

See details:

What is the value of x?

Answers

Answer:

x = 15

Step-by-step explanation:

the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

3x - 5 is an exterior angle of the triangle, then

3x - 5 = x + 25 ( subtract x from both sides )

2x - 5 = 25 ( add 5 to both sides )

2x = 30 ( divide both sides by 2 )

x = 15

Answer:

40° and 115°

Step-by-step explanation:

x+3x-5+25°=180°(angle on a straight line)

4x+20=180°

4x=180°-20

4x=160°

x=160/4

x=40°

The other angle

3x-5=3(40)-5

120-5=115°

total

40°+25°+115°=180°

the half-life of palladium-100 is 4 days. after 12 days a sample of palladium-100 has been reduced to a mass of 4 mg. what was the initial mass (in mg) of the sample? what is the mass (in mg) 7 weeks after the start? you may enter the exact value or round to 4 decimal places.

Answers

Using the half life of palladium, mass seven weeks after start was 0.7931 gm.

The half-life is the amount of time it takes for a quantity (of material) to fall to the cost. In nuclear physics, the phrase usually refers to how rapidly neutrons become radioactive atoms or how long stable atoms survive.

The term can also refer to any sort of hyperbolic (or, in rare situations, non-exponential) decay.

The  half life of palladium 100 = 4 days

after 24 days sample has reduced to a mass of 5mg

standard exponential function is

[tex]P = P_o e^{kt}[/tex]

plugging P = P₀ /2

[tex]P_o/2 = P_o e^{4k }[/tex]

[tex]1/2 = e^{4k }[/tex]

ln (1/2) = 4k

k = -0.1733

function becomes

[tex]P = P_o e^{- 0.1733 t }[/tex]

plugging P = 5 and t = 24

[tex]5 = P_o e^{( - .1733\times 24 ) }[/tex]

P₀ = 320.10

In the medical sciences, for example, the biological half of drugs and other chemicals in the human body is referred to. The flipside of half-life is doubling time in exponential growth.

For the second part of the problem:

7 weeks = 5 × 7 =49 days

plugging t = 49

[tex]P = 320.10 e^{(-.1733 * 35 ) }[/tex]

mass 7 weeks after = 0.7431 mg

To learn more about half life visit:

https://brainly.com/question/24710827

#SPJ1

11. A researcher in a personal submarine begins at the surface of the ocean.
The submarine descends 20.6 meters and then ascends 57 meters. What
is the depth of the personal submarine?
A-26.3 meters
14.9 meters
B-14.9 meters
26.3 meters

Answers

The depth of the personal submarine is -14.9 meter.

What is an integer?

An integer is a whole number that can be positive, negative, or zero and is not a fraction. Integer examples include: -5, 1, 5, 8, 97, and 3,043. 1.43, 1 3/4, 3.14, and other numbers that are not integers are some examples.

Given that,

The submarine descends 20.6 meters and then ascends 5.7 meters. it means 20.6 is a negative number and 5.7 is a positive number.

Now,

To find the depth adding the -20.6+5.7

-20.6+5.7

-14.9

Hence, The depth of the personal submarine is -14.9 meter

To learn more about integer from the given link:
https://brainly.com/question/28148275
#SPJ9

What is the ratio in the question reduced to the lowest terms?

Answers

The total of animals is a prime number and hence the ratio can only be expressed as fraction.

Ratios of Numbers

To find the ratio in the given question, we must first of all add the total sum of the animals given and then find the ratio to each one.

Total number of items given

[tex]12 + 5 + 6 = 23[/tex]

The ratio of spiders to mosquitoes to rats are

[tex]\frac{12}{23}:\frac{5}{23}:\frac{6}{23}[/tex]

The total sum of animals is a prime number and can't be divided, however, the ratio is expressed as simple as possible.

Learn more on ratio here;

https://brainly.com/question/2328454

#SPJ1

A manager needs to rent a meeting room. This function can be used to determine
room is rented.
f(1) = 100
f(t)=f(t-1)+20
Use the function to complete the table indicating the cost of renting the room for e
Hours Rented
1
2
3
4
Cost

Answers

The cost of renting the meeting room by the manager for the hours 1,2,3 and 4 defined by the function of (t) = function of (t-1) + 20, given that function of (1) = 100 is 520.

What is a function?

A function can be defined as a mapping whose co-domain is the set of real numbers.

Given the mapping defined as function of (t) = function of (t-1) + 20, for function of (1) = 100

Hence,

.f (2) = function of (2-1) + 20

.f (1) + 20

100 + 20 = 120

.f (3) = function of (3-1) + 20

.f (2) + 20

120 + 20 = 140

f (4) = f (4-1) + 20

.f (3) + 20

140 + 20 = 160

This can be seen in a table as shown above!

We can conclude with the proper mapping of the defined function of (t) = function of (t-1) + 20 for function of (1) = 100 that the total cost for the hours 1,2,3 and 4 for renting the meeting room is 520.

Learn more about function here: https://brainly.com/question/10283950

#SPJ1

Solve each equation by factoring. Then solve the quadratic formula. (Show all work)

Answers

[tex] - {k}^{2} + 3k = 28 - 2 {k}^{2} \\ - {k}^{2} + 2 {k}^{2} + 3k - 28 = 0 \\ {k}^{2} + 3k - 28 = 0 \\ (k + 7)(k - 4) = 0 \\ \\ k + 7 = 0 \\ \\ ork - 4 = 0 \\ \\ k = - 7 \\ \\ or \\ \\ k = 4[/tex]

ATTACHED IS THE SOLUTION

I GROUPED THE LIKE TERMS TOGETHER FIRST AFTER THAT THEN FACTORISED.

Which of these is best used for displaying frequency distributions when one or two categories make up a large proportion of the total?
A. Pie chart
B. Bar graph
C. Comparative pie chart
D. Comparative bar graph

Answers

Option A, Pie chart best used for displaying frequency distributions when one or two categories make up a large proportion of the total.

A piechart is best which is used for displaying frequency distribution when one or two categories make up a large proportion.

Hence, the Pie chart is best.

Pie chart - A pie chart is a statistical visualization in the shape of a split region that displays numerical information. The arc length of each slice in a pie chart is proportionate to the quantity represented.

Explanation of incorrect options,

Bar graph - A bar chart is a form of chart or graph that depicts categorical data using rectangular bars whose height or length is proportionate to the value they represent. face. Bars can be drawn vertically or horizontally. A histogram is another name for a vertical bar chart.

Comparative pie chart - Pie graphs have pie graphic areas comparing ratios by frequency. The greater the radius of the pie chart, the greater the number of individuals it depicts. This allows you to compare the two data sets visually.

Comparative bar graph - Chart displaying continuous comparisons of columns indicating different portions of the same category. This facilitates the comparison of visual data.

Learn more about frequency distributions at

https://brainly.com/question/27689146?referrer=searchResults

#SPJ9

\theta=310^\circθ=310

Answers

The degrees to radians conversion is given as 1° = π/180 radian thus the conversion of 310° is (31/18)π.

What is unit conversion?

To convert any unit into another is called a unit conversion.

In order to convert units, we need to care about their dimensions their dimension should not be changed.

It is known that π radian = 180°.

1° = (π/180) radian.

Multiply both sides by 310

310° = (π/180)310

310° = (31/18)π

Hence "The degrees to radians conversion is given as 1° = π/180 radian thus the conversion of 310° is (31/18)π".

To learn more about unit conversion,

brainly.com/question/11543684

#SPJ1

The given question is incomplete complete question is ;

Convert the angle \theta=310^\circθ=310∘

theta, equals 310, degrees to radians.

PLEASE QUICK HELP ME

Answers

Answer:

x = 115°

Step-by-step explanation:

Line a and line b are parallel lines

x° and the angle with measure 115° are alternate exterior angles so they have same measurement and each is 115°

What is the remainder of the quantity 4 x cubed minus 20 x minus 50 end quantity divided by the quantity x minus 3 end quantity? Show all necessary steps.[tex]\frac{4x^{3}-20x-50 }{x-3}[/tex]

Answers

The remainder of the polynomial 4x³-20x-50 / (x - 3) would be the expression 4x²+20x+52.

What is a polynomial?

A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.

We have to determine the remainder of the quantity 4 x cubed minus 20 x minus 50 end quantity divided by the quantity x minus 3 end quantity.

4x³-20x-50 = (4x³-4x²-16x-50) + (4x²+16x)

Divide both sides by (x - 3) to get

4x³-20x-50 = (4x³-4x²-16x-50)/(x-3)+(4x²+16x)/(x-3)

⇒ 4(x²+4x+12)+(4x²+16x)/(x-3)

⇒ 4x²+16x+48+(4x²+16x)/(x-3)

⇒ 4x²+16x+48+4(x+4)

⇒ 4x²+20x+52

Therefore, the remainder of the polynomial 4x³-20x-50 / (x - 3) would be the expression 4x²+20x+52.

Learn more about the polynomials here:

brainly.com/question/11536910

#SPJ1

WILL GIVE BRAINLIST IF ANSWERED CORRECTLY!!

Answers

Any transformation that leaves the sides and angles of flat figures unaltered is referred to as rigid transformation or isometry. Congruent pictures are produced by reflection in the plane, translations, rotations, or a combination of them.

What is meant by rigid transformations?

A transformation that maintains the size and shape of a geometric figure is known as a rigid transformation (or isometry). is a unique kind of transformation that doesn't alter a figure's size or shape.

Any transformation that leaves the sides and angles of flat figures unaltered is referred to as rigid transformation or isometry.Congruent pictures are produced by reflection in the plane, translations, rotations, or a combination of them.This suggests that two figures can only be said to be congruent if and only if a rigid transformation, or a combination of one or more rigid transformations, can map one planar figure onto another.

The complete question is:

Make a conjecture. How are rigid transformations and congruent figures related? Check all that apply

a) rigid transformations preserve segment lengths and angle measures.

b) Rigid transformations produce congruent figures.

c) If two figures are congruent, then there is a rigid transformation or a combination of rigid transformations that will map one onto the other.

To learn more about  rigid transformation refer to:

https://brainly.com/question/1462871

#SPJ13

help meeeeeeeeeeee pleaseeeeeeeeeeeeee!!

Answers

Answer:

324 square inches

Step-by-step explanation:

A = S squared

A = 18 x 18

A = 324square inches

the question is on the attachment full thing please to get brainlyist

Answers

Answer:

The percent of change is about a 16.95% increase.

The predicted population in 2019 is 158,000 people.

sry if im wrong

Step-by-step explanation:

Premises:
If you have a cat, then it will chase mice.
You have a cat.
Conclusion:
Your cat will chase mice.
The Law of what
makes this argument true.

Answers

The law which makes this argument true is referred to as the Law of Syllogism.

What is the Law of Syllogism?

The Law of Syllogism is also referred to as reasoning by transitivity and it states that if two (2) statements are true, then a third true statement can be logically derived.

Mathematically, the Law of Syllogism follows a specific pattern and can be represented by the following conditional statements:

Conditional statement 1: If P, then Q (P ↔ Q).Conditional statement 2: If Q, then R (Q ↔ R.Conditional statement 3: If P, then R ( P ↔ R).

In this context, we can reasonably infer and logically deduce that the Law of Syllogism makes the conclusion based on the two premises.

Read more on Law of Syllogism here: https://brainly.com/question/25321079

#SPJ1

Please help me please I’m begging I WILL GIVE YOU BRAINLEST

Answers

The value of x is 54.

What is the Same Side Interior Angles Theorem?

If a transversal meets two parallel lines, each pair of same-side interior angles is supplementary (their sum is 180°), according to the theorem for the "same-side interior angle theorem."

The given angles in the figure are 2x + 42° and x - 24°, which are interior angles formed on the same side of the transversal.

By Same Side Interior Angles Theorem,

2x + 42° + x - 24° = 180°

3x + 18° = 180°

3x = 180° - 18°

3x = 162°

x = 54

To learn more about Same Side Interior Angles Theorem visit:

https://brainly.com/question/15066024

#SPJ10

I need help with finding the coordinates of B, I found A but I can't seem to get the right answer for B.

Answers

The graph represents the cosine graph, the coordinates of B is (-180, -1 )

what is cosine graph?

This is a type of graph used to depict cosine values of angles. The maximum and minimum points in these type of graph is 1 and -1.

The zero points gives the maximum point on the graph, hence the graph starts at ( 0, 1 )

Point B is found by analyzing the graph.

The point is located at the minimum which is -1. this is for the output value.

The input value which is the x direction we look at the cycles covered. one full cycle is 360 degrees or -360 degrees.

Point B is in the negative and coves half cycle which is -180

Hence B ( -180, -1)

Read more on angles here: https://brainly.com/question/25716982

#SPJ1

11. The price of a sweater changed from $20 to $12. By what percentage was the price of the sweater
changed?
The price of the sweater decreased by __ %

Answers

well, the change was 8 bucks.

if we take 20 to be the 100%, what is 8 off of it in percentage?

[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} 20 & 100\\ 8& x \end{array} \implies \cfrac{20}{8}~~=~~\cfrac{100}{x} \\\\\\ \cfrac{5}{2}=\cfrac{100}{x}\implies 5x=200\implies x=\cfrac{200}{5}\implies x=40[/tex]

Last year, Lena biked 565 miles. This year, she biked k miles. Using k, write an expression for the total number of miles she biked

Answers

565+k

hope this helps!

Find the slope:
(-3, 3) and (7, 6)

Answers

Answer:

slope = (3/10)

Step-by-step explanation:

(-3, 3) and (7, 6)

(x₁, y₁)        (x₂, y₂)

        y₂ - y₁         6 - 3             3              3

m = ------------ = ------------ = ------------ = ----------

        x₂ - x₁         7 - (-3)        7 + 3           10

I hope this helps!

Solve each equation. Show solutions on number line |x-4|=1

Answers

The solutions to the equation are x = 5 and x = 3

How to solve the equation?

The equation is given as

|x - 4|= 1

The above equation is an absolute value equation

When the absolute value sign is removed from the equation, we have

x - 4 = 1 or x - 4 = -1

Add 4 to all sides of the equation

So, we have the following equations

x = 1 + 4 or x = 4 - 1

Evaluate

x = 5 or x = 3

This means that the value of the equation is x = 5 or x = 3

Read more about absolute value equation at

https://brainly.com/question/17795998

#SPJ1

Which of these sets of side lengths are Pythagorean triples? Check all that apply.
A. 10, 24, 26
B. 14, 48, 49
C. 9, 12, 16
D. 9, 40, 41
E. 15, 20, 25

Answers

The sets of lengths that are Pythagorean triples are:

A. 10, 24, 26

D. 9, 40, 41

E. 15, 20, 25

What is a Pythagorean Triple?

A Pythagorean triple can be described as a set of three numbers of the side lengths of a right triangle whereby the square of the longest side is equal to the sum of the squares of the two other sides.

For 10, 24, 26, we have:

10² + 24² = 26²

676 = 676 [true]

The set, 10, 24, 26 is a Pythagorean triple.

For 14, 48, 49, we have:

14² + 48² = 49²

2,500 = 2,401 [not true]

The set, 14, 48, 49, is NOT a Pythagorean triple.

For  9, 12, 16, we have:

9² + 12² = 16²

225 = 256 [not true]

The set, 9, 12, 16, is NOT a Pythagorean triple.

For  9, 40, 41, we have:

9² + 40² = 41²

1,681 = 1,681 [true]

The set, 9, 40, 41, is a Pythagorean triple.

For  15, 20, 25, we have:

15² + 20² = 25²

625 = 625 [true]

The set, 15, 20, 25, is a Pythagorean triple.

The correct set of options are, A, D, and E.

Learn more about the Pythagorean triple on:

https://brainly.com/question/11994763

#SPJ1

Round 4,929 to the place value of the underlined digit.

Answers

Raising 4,929 to the place value of the underlined digit will give a value of 4930.

What is rounding up of numbers?

It should be noted that rounding up of numbers simply means raising the number to the nearest ten, hundred, or thousand.

In this case let's assume that the underlined number is 2. Therefore, raising 4929 will give 4940. It should be noted that the number beside it is more than 5. Therefore, 1 will be added to 2 making 3. The new number is 4930.

Learn more about numbers on:

brainly.com/question/24644930

#SPJ1

Which relations are functions? Select all that apply.

Answers

Options A and B are functions as either if of the inputs is relating to a different output or different inputs relating to a single output.

What is a function?

A function can be thought of as a set of inputs that produces some output.

We know a relation is a function if every input relates to a different output sometimes many input relates to one output but one input relates to different outputs is not a function.

Option A is a function as every input relates to a different output.

Option B is not a function as the input - 4 relates to two different outputs 12 and 15.

Option C is also a function as every preimage has a different image.

learn more about functions here :

https://brainly.com/question/12431044

#SPJ1

you are given the following information obtained from a random sample of four observations selected from a large, normally distributed population. 25 47 32 56

Answers

The 95% confidence interval for the mean of the population lies between

(17.61, 62.39)

Construct a 95% confidence interval for the mean:

To construct a 95% confidence interval for the mean of the population, we must start with finding the following:

Mean

n=4

Mean=(25+47+32+56)/n

         =(160)/4

         =40

Mean is 40

Standard deviation σ

                             = [tex]\frac{1}{n-1}( \sum x^{2} -n(mean)^{2} )[/tex]

                             = [tex]\frac{1}{3} (6994-4(40)^{2} )[/tex]

                            σ= 14.07

Now, we construct 95% confidence interval CI:

Confidence interval=mean± t-table value*(standard deviation/√n)

Given a t-table value of 3.1824 from z-distribution table, mean=40, n=4, and standard deviation=14.07, we have:

Confidence interval=(40±3.1824(14.07/√4)

                               =(40±22.39)

                               =(40-22.39, 40+22.39)

Confidence interval=(17.61, 62.39)

The question was incomplete, below is the complete question:

You are given the following information obtained from a random sample of four observations taken from a large, normally distributed population.

25 47 32 56

Construct a 95% confidence interval for the mean of the population

Learn more about confidence interval here:

https://brainly.com/question/17212516

#SPJ4

Other Questions
Identify the mistake and explain why the graph of the aggregate expenditures line does not correctly illustrate the economy's equilibrium. -Write the net ionic equation that shows the reaction of 1.0 M ammonia, NH3, when dissolved in water.-At room temperature the Keq of the above solution is 1.1. If the initial concentration of NH3 is 1.0 M, quantitatively define the pH of above solution (Show calculations using an I.C.E. table and use the quadratic equation) -What is the reaction that occurs when a solution of ammonia is added to a solution containing Fe3+ ions? -Propose a chemical compound that can be used to dissolve the precipitate formed in part 1.c. Support your answer with a proper chemical equation An 8 1/2 sheet of paper is being cut into 1 9/16 inch strips to make a paper chain. How many strips can be made from one sheet of paper? Solve for x show work for brainly Which of the following expressions is equivalent to3x(2+5y) Need help asap.Complete the sentence about the use of color.Black text on a white background __ is a good choice for all readers can be hard to read for those with dyslexia or autismhas a low contrast hue At school, the maximum number of students that can be in a classroom is 27. If there are 18 students signed up for the art class, how many more students can join the class?I am trying to get the inequality as a problem Please help!!!!!!!!!!! If log (m + n) = log m+log n, show that m =n/n-1 which technology concept uses computer resources from multiple locations to solve a problem This is a brief biography of the French actress Sophie Marceau. Fill in theblanks with the correct conjugation of avoir or tre.deux enfants (children).Elle diego wants to open a surf shop in his beach town. while he knows just about everything about surf boards, and related supplies, he needs general business advice. he goes to the small business administration and they connect him with a retired executive who has experience with start ups through what program? how many ways can nine trophies be arranged on a shelf A cone has a radious of 5inches and a height of 10.125inches.What is the volume of the cone in inch rounded to the nearest tenth? The first works of the American literature were written primarily by according to trajectory theorists, if a late bloomers behavior becomes increasingly violent over time, it is believed that the late bloomer is combing risk-taking behavior, poor social skills, and: What does it mean when something asks to put a proposed hypothesis? Help with Java code, need a formula for finding the circumference Thoreaus ideology about the individual and society was similar to HELP!!!!!!!!Calculating the average atomic mass from Isotope data