1) what is the answer to this

For the matrix:

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

The determinant is equal to 16.

Remember that for a general 2 by 2 matrix:

[tex]\left[\begin{array}{ccc}a_1&b_1\\a_2&b_2\\\end{array}\right][/tex]

The determinant is given by the simple formula:

D  = a₁*b₂ - b₁*a₂

This is the only thing we need to use in this problem, we will use this formula to find the determinant of the given 2 by 2 matrix.

In this case we have the matrix:

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

Then we can just use the given formula for the determinant, we will get

D = 4*2 - (-1)*8

We just need to solve that expression, we will get:

D = 8 - (-8) = 8 + 8 = 16

We can see that the determinant of the given matrix is equal to 16.

If you want to learn more about determinants:

https://brainly.com/question/16981628

#SPJ1

the range of the function in the graph is:

-4 ≤ y ≤ 2

For a function y = f(x), we define the range as the set of the outputs. This is, the set of the possible values of y.

Now, remember that the values of y are on the vertical axis. So if we want to know the range, we just need to look at the vertical axis and see which ones are the allowed values.

If we look at the graph, we can see that the minimum value of y is:

y = -4

And we can see that the maximum value of y is:

y = 2

Then the range of the function in the graph is:

-4 ≤ y ≤ 2

If you want to learn more about range:

https://brainly.com/question/10197594

#SPJ1

A loan fee is an amount a consumer pays for a loan. This includes taking out a car loan, credit card, or mortgage. Common loan fees include interest rates, origination fees, service fees, late fees, etc. Gross Loan Fees are typically associated with your credit card and consist of any outstanding balance plus any other fees incurred if you carry overdue amounts to your credit card.

If you know three numbers related to your credit card account: credit card (or loan) balance, APR, and billing cycle length, you can calculate your loan fees.

Current Balanced Owned =$785

APR = 24.42%

Let’s suppose the billing cycle is 30 days, then

Finance charge = $15.76

The new balance you owe = $800.76.

More problems related to Interest Rate and Finance, are in the link below:

https://brainly.com/question/19568969?referrer=searchResults

#SPJ4

Answer:

Step-by-step explanation:

If a polygon does not have 5 sides, then it is not a pentagon.: TRUE

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. (2x - 3)⁷ is expanded as 128x⁷ − 1344x⁶ + 6048x⁵ − 15120x⁴ + 22680x³ − 20412x² + 10206x − 2187.

The Binomial theorem tells us how to expand expressions of the form (a + b)ⁿ, for example, (x + y)⁷. The larger the power is, the harder it is to expand expressions like this directly.

The total number of terms in the expansion of (x+y)ⁿ are (n+1).

The sum of exponents of x and y is always n.

nC₀, nC₁, nC₂, … .., nCₙ are called binomial coefficients and also represented by C₀, C₁, C₂, ….., Cₙ

The binomial coefficients which are equidistant from the beginning and from the ending are equal.

i.e. nC₀ = nCₙ, nC₁ = nCₙ₋₁ , nC₂ = nCₙ₋₂ ,….. etc.

Let the function be (2x - y)⁴

By using binomial expansion theorem, we get

(2x - 3)⁷ = 128x⁷ − 1344x⁶ + 6048x⁵ − 15120x⁴ + 22680x³ − 20412x² + 10206x − 2187

(2x - 3)⁷ is expanded as 128x⁷ − 1344x⁶ + 6048x⁵ − 15120x⁴ + 22680x³ − 20412x² + 10206x − 2187.

To learn more about binomial, refer to:

brainly.com/question/15246027

#SPJ4

The probability that a string of 15 people passes through screening successfully before an individual is caught with a questionable object is 0.3040 and the expected number of people to pass through be- fore an individual is stopped 49

3% of people whose luggage is screened at an airport have questionable objects in their luggage i.e

P(x)=3/100=0.03

The probability of people whose luggage is screened at an airport and have no questionable object in their luggage is

〖P(x)〗^1=1-P(x)

〖P(x)〗^1=1-0.03

〖P(x)〗^1=0.97

Using Binomial probability which states that

P(x)=(nCx) (p)^x (q)^(n-x)

N= 16 total number in consideration

p= probability with no questionable luggage

q= probability with questionable luggage

P(15)=(16C15) (p)^15 (q)^(16-15)

P(15)=(16C15) (0.97)^15 (0.03)^(16-15)

16C15=16!/((16-15)!(15!))

15C15=15!/((1)!(15!))

16C15=20922789888000/((1)(1307674368000))

16C15=20922789888000/1307674368000

16C15=16

P(15)=(16) (0.97)^15 (0.03)^1

P(15)=(16)(0.63325)(0.03)

P(15)=0.3040

P(x) =(Required outcome)/(Total outcome)

0.3040 =15/(Total outcome)

Total outcome=15/0.3040

Total outcome=49.34

Total outcome=49

To learn more about binomial  probability. Click, https://brainly.com/question/12474772

SPJ4

The simplest form of the expression is 4   .

We have given an expression √2 . √8 .

On multiplying , we get

√2 . √8 = √16

On simplifying , we get

√16  =  √ 4 × 4

           = 4

Learn more about expression here :

brainly.com/question/723406

#SPJ4

We will know 8 complete names after 2 days and 20 complete names after 8 days. Whether or not this function represents your learning rate will vary from person to person.

Here, we are given an exponential function: f(t)= c{1- e^(-kt)}

where

f(t) = number of tasks learned.

c = total number of tasks to be learned

k = rate of learning

t = time

Now, when we move to a new school, number of names we need to learn ⇒ c = 25

learning rate for new tasks = 20%

⇒ k = 0.2

and time = 2 days

⇒ t = 2

Substituting these values in the function we get-

f(2) = 25{1- [tex]e^{-0.2 * 2}[/tex]}

= 25{1- [tex]e^{-0.4}[/tex]} [tex]e^{-0.4}[/tex]

= 0.67

Thus, f(2) = 25( 1-0.67 )

f(2) = 25(0.33)

f(2) = 8.25

Thus, we will be able to learn 8 complete names in 2 days.

If t = 8f(8) = 25{1- [tex]e^{-0.2*8}[/tex]}

= 25{1- [tex]e^{-1.6}[/tex]}

= 25(1- 0.20)

= 25(0.80)

= 20

Thus, we will be able to learn 20 complete names in 8 days. Whether of not this function describes your own learning rate will vary from person to person. Some people are fast learners whereas others take their time. A fast learner will have a higher learning rate whereas a slow learner will have a lower learning rate as depicted by k. You can change the value of k to adjust the function as per your learning abilities.

Learn more about the exponential function here-https://brainly.com/question/2456547

#SPJ4

Your question was incomplete, check for full content below-

Psychologists use an exponential model of the learning process, f(t)= c(1-e -kt) , where c is the total number of tasks to be learned, k is the rate of learning, t is time, and f(t) is the number of tasks learned.

a. Suppose you move to a new school, and you want to learn the names of 25 classmates in your homeroom. If your learning rate for new tasks is 20 % per day, how many complete names will you know after 2 days?

b. After 8 days?

c. Does this function seem to describe your own learning rate? If not, how could you adapt it to reflect your learning rate?

The simplified form of the expression (3[tex]x^{2}[/tex][tex]y^{-1}[/tex])([tex]2^3 x^{3}[/tex] y) is (24)([tex]x^{5}[/tex]).

An algebraic expression (or variable expression) is a term that has been combined with operations like addition, subtraction, multiplication, and division.

To simplify an algebraic expression, we simply combine like terms. As a result, variables that are similar will be combined. The same abilities will now be combined from the similar variables.

The given expression is (3[tex]x^{2}[/tex][tex]y^{-1}[/tex])([tex]2^3 x^{3}[/tex] y).

As we know [tex]x^{a}[/tex] + [tex]x^{b}[/tex] = [tex]x^{a+b}[/tex]

So, (3[tex]x^{2}[/tex][tex]y^{-1}[/tex])([tex]2^3 x^{3}[/tex] y) = (3×[tex]2^{3}[/tex])([tex]x^{2}[/tex]×[tex]x^{3}[/tex])([tex]y^{-1}[/tex]×y)

(3[tex]x^{2}[/tex][tex]y^{-1}[/tex])([tex]2^3 x^{3}[/tex] y) = (24)([tex]x^{5}[/tex])([tex]y^{0}[/tex])

(3[tex]x^{2}[/tex][tex]y^{-1}[/tex])([tex]2^3 x^{3}[/tex] y) = (24)([tex]x^{5}[/tex])

As a result, the abbreviated form of the expression (3[tex]x^{2}[/tex][tex]y^{-1}[/tex])([tex]2^3 x^{3}[/tex] y) is (24)([tex]x^{5}[/tex]).

To learn more abour algebraic expression visit:
https://brainly.com/question/953809

#SPJ9

Answer:

To get the Greates Common Factor (GCF) of 39375 and 779625 we need to factor each value first and then we choose all the copies of factors and multiply them:

39375:    3 3     5 5 5 5 7  

779625:    3 3 3 3 5 5 5   7 11

GCF:    3 3     5 5 5   7  

The Greates Common Factor (GCF) is:   3 x 3 x 5 x 5 x 5 x 7 = 7875

Step-by-step explanation:

Answer: 1.3

Step-by-step explanation:

Answer:

1.3

Step-by-step explanation:

9 is the hundredth and we round up with 8 so we’d round up 1 and we get 1.3

The step 2 should  be m∠p + m∠o  = 180 degrees(supplementary angles)

The external angle theorem  states that the measure of each exterior angle of a triangle is equal to the sum of the opposite and non-adjacent interior angles(remote interior angles) .

Therefore,

Step 1

m∠m + m∠n + m∠o = 180°(sum of angles of a triangle)

It's very correct

Step 2

m∠p - m∠o = 90 degrees(Alternate angles)

This is incorrect.

It should be m∠p + m∠o  = 180 degrees(supplementary angles)

The angles  m∠p  and  m∠o are supplementary angles. This simply implies the angles add up to 180 degrees.

learn more on angles in triangle here: https://brainly.com/question/25950519

#SPJ1

The measure of angle <3 is 105 degrees

The diagram that completes the question is added as an attachment

The angle is given as

<6 = 75

From the diagram, we have

<3 + <6 = 180 degrees

The above is true by the sum of internal angles between parallel lines

So, we have

<3 + 75 = 180

Subtract 75 from both sides of the equation

So, we have

<3 + 75 - 75 = 180 - 75

Evaluate the like terms

So, we have

<3 = 105

Hence, the measure of angle <3 is 105 degrees

Read more about angles at

brainly.com/question/7620723

#SPJ1

Using addition, Total length of wire used by the electrician is 76 feet.

Through addition, items are combined and counted as a single large group. The process of adding two or more numbers together is known as addition in mathematics. The terms addends and total both refer to the numbers that are added and the result of the operation.

One of the four fundamental operations of mathematics is addition, which is typically denoted by the plus sign (+). The other three are subtraction, multiplication, and division. The entire amount or sum of the two whole numbers is obtained by adding them.

We will use simple addition here,

Total length used by electrician is

(9 + 13 + 42 + 12) feet.

= 76 feet

To learn more about addition from given link

https://brainly.com/question/25421984

#SPJ9

The area of her garden where Riya is applying Mulch is 0.25m³.

To understand this answer, we will analyze the information in the question statement. So, we know that Riya is applying Mulch to her Garden. The application of Mulch is at the rate of 250 000 cm^3 for every m^2. Now to find the rate for every m^3, we will use the basic conversion formula for converting cm to m:
we know that,

100 cm = 1m

Now we can write this formula as follows,

1 cm = 1 / 100 m

1 cm = 0.01 m

We will use the same relation for the values given to us in the question:
250, 000 cm^3 = 250, 000 x 1 cm x 1cm x 1cm

1 cm^3 = 1 cm x 1cm x 1cm

250, 000 cm^3 = 250, 000 x 0.1 x 0.1 x 0.1

From, 1 cm = 0.01 m

250, 000 cm^3 = 250, 000 x 0.000001

250, 000  cm^3 = 0.25 m^3

Hence Riya is applying at 0.25 m^3 per m^2 (meter square).

A similar problem is solved in the link below:

https://brainly.com/question/18152233#

#SPJ4

The coordinate of the point R' after translation will be (0, - 4).

A spatial transformation is each mapping of feature space to itself and it maintains some spatial correlation between figures.

If ∆PQR is translated left 2 and down 6. Then the translation rule is given as,

(x', y') → (x - 2, y - 6)

From the graph, the coordinate of point R will be at (2, 2). Then the coordinate of the point R' after translation will be

(x', y') → (2 - 2, 2 - 6)

(x', y') → (0, - 4)

More about the transformation of a point link is given below.

https://brainly.com/question/27224339

#SPJ2

The questions tests on indices. Write 27 in form of its prime factors. Apply the power rule (a^m)^(1/n)=a^(m/n). In prime factor form 27 = 3×3×3

27 = 3^3

(27^3)^(1/3) = 3^(3×1/3) = 3

Find out more on indices at: brainly.com/question/28595092

#SPJ4

Based on the information, it should be noted that the appropriate fraction for 8.33 will be 8 1/3.

It should be noted that a decimal simply means the numbers that is represented as a whole number and a fraction.

In this case, it should be noted that the 8.33 consist of a whole number as well as a fraction.

Therefore, it should be noted that 8.33 will be:

= 8 + 1/3

It should be noted that 1/3 is a repeating decimal as it will always give 0.3333...

Therefore, the appropriate fraction for 8.33 will be 8 1/3.

Learn more about fractions on:

brainly.com/question/17220365

#SPJ1

The third term of the expansion is 6a^2b^2

The binomial term is given as

(a - b)^4

The r-th term of the expansion is calculated using

r-th term = C(n, r - 1) * x^(n - r + 1) * y^(r - 1)

So, we have

3rd term = C(4, 3 - 1) * (a)^(4 - 3 + 1) * (-b)^(3-1)

Evaluate the sum and the difference

3rd term = C(4, 2) * (a)^2 * (-b)^2

Evaluate the exponents

3rd term = C(4, 2) * a^2b^2

Evaluate the combination expression

3rd term = 6 * a^2b^2

Evaluate the product

3rd term = 6a^2b^2

Hence, the third term of the expansion is 6a^2b^2

Read more about binomial expansion at

https://brainly.com/question/13602562

#SPJ1

Based on the amount that Scott borrowed for the new TV and game system, and the interest paid, the simple interest rate is 15.7%

The simple interest rate can be found by the formula:

= Interest paid by Scott on the loan / Amount Scott borrowed x 100%

Solving for the simple interest rate gives:

= 155 / 985 x 100%

= 0.1573604060913705583756345177665 x 100%

= 0.157 x 100%

= 15.7%

This means that Scott paid 15.7% on the loan he borrowed.

In conclusion, Scott's simple interest rate is 15.7%.

Find out more on simple interest at https://brainly.com/question/25793394

#SPJ1

The required solution of the given expression is -2/5 as a simplified form.

An expression is a set of terms combined using the operations +, – , x or ÷. An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An expression is in simplest form when no terms can be combined

Given:

The given expression is

2/5÷(−5/5)

According to given question we have

The expression is

2/5÷(−5/5)

=2/5÷(-1)

=2*(-1)/5

=-2/5

Therefore, the required solution of the given expression is -2/5 as a simplified form.

Learn more details about expression  here:

https://brainly.com/question/14083225

#SPJ1

Answer:1 hour 30 minutes

Step-by-step explanation:8 kilometres are compete in an hour, plus another 4 kilometres (to make 12 total) is half of that, so adds another half an hour

The time it will take the man 1.5 hours to cover a distance of 12 km, travelling at the same speed.

Speed describes how accelerated something or somebody is moving. If you know the distance traveled and the time it took, we can calculate the average speed of an object.

The speed formula is speed = distance / time.

We are given that;

Distance = 12 km

Speed = 8 km/h

Now,

Plugging these values into the formula for time, you get:

time = 12 / 8

time = 1.5 hours

Therefore, by the given speed the answer will be 1.5 hours.

Learn more about speed here;

https://brainly.com/question/7359669

#SPJ2

l o o k    i t   u  p     o n    g a u t h m a t h      c o p y   u r    q e s t i o n   t h e r e

Step-by-step explanation: You're welcome

Answer:

Step-by-step explanation:

Answer:

x=82.7

Step-by-step explanation:

3x+6-6=248

3x=248

x=82.7

Answer:  f(x) = | x |

Step-by-step explanation:

when transforming and translating a function, you use the form a | x - h | + k  

a= vertical shrink/stretch factor

h = horizontal movement ( right or left)  

k = vertical movement ( up or down )

So a = 1/2  h = 0 and k =2

g(x) = 1/2 | x-0 | + 2

g(x) = 1/2 | x | + 2    [which means vert shrink of 1/2 and up 2 units ]

Answer to this question is:

Domain of given function is (-∞,0),{x|x<0}

Range of given function is (0,∞),{y|y>0}

Inverse of given function is -1/2x²

The domain is all values of x that make the expression defined.The entire range of independent variable values is the domain of a function.

This definition can be stated simply as follows: The domain is the collection of all x-values that can be used to make the function "work" and produce actual y-values.

When choosing the domain, keep in mind that a fraction's denominator (bottom) cannot be 0.

Interval Notation:(-∞,0)

Set-Builder Notation:{x|x<0}

The set of all valid y values constitutes the range.

Interval Notation:(0,∞)

Set-Builder Notation:{y|y>0}

For calculation of inverse:

∴Domain of given function is (-∞,0),{x|x<0}

Range of given function is (0,∞),{y|y>0}

Inverse of given function is -1/2x²

LEARN MORE ABOUT DOMAIN AND RANGE OF A FUNCTION HERE:https://brainly.com/question/2264373

#SPJ4

The sum in scientific notation will give:

7.76*10⁶

Here we want to find the sum between the numbers (7.3*10⁶) and (4.6*10⁵).

To sum these numbers, we need to have the same exponent in the "10", then we can rewrite:

7.3*10⁶ = 73*10⁵

Now the sum will be:

73*10⁵ + 4.6*10⁵

Taking a common factor we get:

73*10⁵ + 4.6*10⁵ = (73 + 4.6)*10⁵ = 77.6*10⁵

Now we want to go back to scientific notation, so we need to move the decimal point one time to the left, we will get:

77.6*10⁵ = 7.76*10⁶

That is the outcome of the sum.

If you want to learn more about scientific notation:

https://brainly.com/question/5756316

#SPJ1