Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .

If the matrix is said to be in reduced echelon form then it should satisfy the following conditions:

1. The pivot in any non-zero row is the only non-zero entry in its column.

2. The pivot in any non-zero row is positive.

What is an echelon form?

A matrix in reduced echelon form is also sometimes referred to as a row-reduced echelon form or simply a reduced row echelon form (RREF). To check if a matrix is in RREF, you need to verify if the matrix satisfies both the conditions for echelon form and the additional conditions for RREF.

1. A matrix is said to be in echelon form if it satisfies the following conditions:

2. All zero rows (if any) are at the bottom of the matrix.

3. The leading entry (the first non-zero entry) of each non-zero row occurs to the right of the leading entry of the previous row.

4. The leading entry in any non-zero row is 1, called a pivot.

A matrix is said to be in reduced echelon form if it is in echelon form and additionally satisfies the following conditions:

1. The pivot in any non-zero row is the only non-zero entry in its column.

2. The pivot in any non-zero row is positive.

Hence, if the matrix is said to be in reduced echelon form then it should satisfy the following conditions:

1. The pivot in any non-zero row is the only non-zero entry in its column.

2. The pivot in any non-zero row is positive.

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1) 3,500 rounded to the nearest ten thousand is 0.

2) 462,183.5062749 rounded to the nearest tenth is 462,183.5.

3) 6 + (-3) - 5 is equal to -2.

QUESTION 1:The given number is 3,500. To round it to the nearest ten thousand, we need to see which ten thousand is closest to the number. In this case, 3,500 is between 0 and 10,000. Since 0 is closer, we round down to 0. So, 3,500 rounded to the nearest ten thousand is 0.

QUESTION 2: To round the given number, 462,183.5062749, to the nearest tenth, we need to look at the digit in the hundredths place (the second digit after the decimal point), which is 0. Since 0 is less than 5, we round down the digit in the tenths place to 3.

Therefore, 462,183.5062749 rounded to the nearest tenth is 462,183.5.

QUESTION 3:We have to evaluate 8 to the 8th power. That means we have to multiply 8 by itself 8 times. Using a calculator, we can find that 8^8 is equal to 16,777,216.

QUESTION 4:When solving the expression 6 + (-3) - 5, we should follow the order of operations, which is: Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

Since there are no parentheses or exponents in this expression, we can simply perform addition and subtraction from left to right.

6 + (-3) = 3, then 3 - 5 = -2.

Therefore, 6 + (-3) - 5 is equal to -2.

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Answer:

Step-by-step explanation:

Complementary angles add to 90 degrees, so the measure of its complement is 90-88=2 degrees.

Supplementary angles add to 180 degrees, so the measure of its supplement is 180-88=92 degrees.

The equivalent of 0.85 hectogram (hg) is 850 decigram (dg)

The measure is given as:

0.85 hg

As a general rule:

1 hectogram (hg) = 1000 decigram (dg)

So, multiply both sides of the above equation by 0.85

So, we have:

0.85 * 1 hectogram (hg) = 0.85 * 1000 decigram (dg)

Evaluate the product

0.85 hectogram (hg) = 850 decigram (dg)

Hence, the equivalent of 0.85 hectogram (hg) is 850 decigram (dg)

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Answer:

$1.77 bro

Step-by-step explanation:

yb better

Answer:

$1.77

Step-by-step explanation:

You could set up the equation like this:

10 - (5.25 + 2.98)

If you buy a movie ticket for $5.25 and popcorn for $2.98, you would have to add these costs together first. Then, you can subtract that total from your $10 payment and get your answer of $1.77 change back.

Answer:

Step-by-step explanation:

1.

\([(5 + 2)3]5\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Calculate\:within\:parentheses}\:\left[\left(5+2\right)3\right]\::\quad 21\\\\=21\times\:5\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:21\times\:5\:\\:\quad 105\)

2.

\((9-2)10\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Calculate\:within\:parentheses}\:\left(9-2\right)\::\quad 7\\\\= 7\times 10\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:\\7\times\:10\::\quad 70\)

Answer: 5400

Step-by-step explanation:

For a cube V=lwh

Volume for the larger box = 4.5 x 5 x 3.75 =84.375 or 675/8

Volume for smaller box =.25 x .25 x .25 = .015625 or 1/64

divide the larger by smaller.

84.375/.015625=5400

or

\(\frac{675}{8} /\frac{1}{64}\)   keep change flip = \(\frac{675}{8} * \frac{64}{1}\) = 5400

B) Therefore, the polynomials among the given options are (i), (ii), (iv),  and (vii).

A polynomial is a mathematical expression made up of constants, variables, and non-negative integer exponents.

It can have no variable at all, one variable or multiple variables.

A polynomial can't have a negative exponent. It never has division by a variable. Based on this definition, options

(iii) 1- √5x

(v) (x-2)(x-4)/x

(vi) 1/x+1, and

(viii)1/2xa

are not polynomials because they have fractional exponents or negative exponents.

Therefore, the polynomials among the given options are (i), (ii), (iv), and (vii) because they do not have fractional or negatice exponent.

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An example of a pyramid and a prism that have the same base and volume is a triangular pyramid and a triangular prism with congruent bases and heights.

Let's consider a triangular pyramid and a triangular prism with congruent bases and heights. Both shapes have a triangular base, meaning their base area is the same. The volume of a pyramid is given by the formula V = (1/3) * base area * height, whereas the volume of a prism is calculated as V = base area * height.

Since the bases of the pyramid and prism are congruent, their base areas are equal. In order for the pyramid and prism to have the same volume, the height of the pyramid must be three times the height of the prism. This is because the volume of a pyramid is one-third of the volume of a prism with the same base and height.

By choosing a triangular pyramid and a triangular prism with congruent bases and heights, we ensure that the base area and the height are the same for both shapes. Therefore, their volumes will also be equal.

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Answer:

65 meters

Step-by-step explanation:

you add all the side/numbers together

Answer:

Yes, 6.

Step-by-step explanation:

it says it on the picture?

Anyways,

21-3=18

18+18=36

36÷6=6

Answer:  21 – 3 + 18 ÷ 6 = 6. Twenty-one minus 3 is 18, then add 18 to that to get 36. Then divide that by 6 to get the correct answer, 6

Step-by-step explanation:

Answer:

x = 18

Step-by-step explanation:

So, we know that triangle ABC is congruent to triangle DEC, therefore, each corresponding angle is congruent as well.

In other words:

angle A = angle D

angle B = angle E  and

angel C = angle C

If angle B = 40° and angle E = 2x + 4, and angle B = angle E then, 40 = 2x + 4

Now we can solve for x by using the equation 40 = 2x + 4

40 = 2x + 4 (You will want to separate x from the rest of the equation. Start by subtracting the 4, on the right side, by 4 to cancel it out, then subtract 4 by 40 to get 36)

36 = 2x (Now you will want to get rid of the 2. To get rid of it, divide 2 on both sides, like before.)

Now you are left with x = 18

I hope all of this made sense, and I hope it helped

Answer:

after 8 hours both candles will be burned down completely

Step-by-step explanation:

but blue candle will only need a little over an hour to burn completely

Answer:

Step-by-step explanation:

To convert 20 cm to meters, we divide by 100, because 1 meter = 100 centimeters.

So, 20 cm = 20/100 m = 0.2 m

To convert 0.2 m to meters in the lowest form, we divide by 15, because 1 meter = 15 units.

So, 0.2 m = 0.2/15 m = 0.013 m

So the final answer is 0.013 m.

To find the probability that a randomly selected worker has a retirement plan or health insurance, we need to add the probabilities of having a retirement plan and having health insurance and then subtract the probability of having both,

Since we don't want to count those workers twice. P(retirement plan or health insurance) = P(retirement plan) + P(health insurance) - P(both), P(retirement plan or health insurance) = 0.56 + 0.68 - 0.49, P(retirement plan or health insurance) = 0.75.

Therefore, the probability that a randomly selected worker has a retirement plan or health insurance is 0.75. we'll use the formula: P(A or B) = P(A) + P(B) - P(A and B), where A represents having a retirement plan, B represents having health insurance, and P(A and B) represents having both.

Given:
P(A) = 56% (retirement plan)
P(B) = 68% (health insurance)
P(A and B) = 49% (both)

Now we can plug these values into the formula: P(A or B) = 0.56 + 0.68 - 0.49 = 0.75, The probability that a randomly selected worker has a retirement plan or health insurance is 75%.

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Answer:

Answer: A

Step-by-step explanation:

X comes first then Y. so go right 2 since its positive, then go up 5 since its also a positive. then you get your answer

Step-by-step explanation:

A 2 (x horizontal line), 5 (y vertical line)

(a)The solution to \(y[n]\) with the given initial condition and input sequence is: \[y[n] = \{1, 1.5, 1.75, 1.875, \ldots\}\]

(b) The solution to \(y[n]\) with the given initial conditions and input sequence is: \[y[n] = \left\{\frac{1}{3}, -\frac{1}{18}, \frac{5}{54}, \ldots\right\}\]

(a) To find the solution to \(y[n]\) when \(y[-1]=1\) and \(x[n]=u[n]\), we can recursively apply the given system equation.

Given:

\[y[n] = 0.5y[n-1] + x[n]\]

\(y[-1] = 1\) (initial condition)

\(x[n] = u[n]\) (unit step input)

To solve for \(y[n]\), we can substitute the values and iterate through the equation:

For \(n = 0\):

\[y[0] = 0.5y[-1] + x[0] = 0.5 \cdot 1 + 1 = 1.5\]

For \(n = 1\):

\[y[1] = 0.5y[0] + x[1] = 0.5 \cdot 1.5 + 1 = 1.75\]

For \(n = 2\):

\[y[2] = 0.5y[1] + x[2] = 0.5 \cdot 1.75 + 1 = 1.875\]

And so on...

The solution to \(y[n]\) with the given initial condition and input sequence is:

\[y[n] = \{1, 1.5, 1.75, 1.875, \ldots\}\]

(b) To solve the difference equation \[y[n] = \frac{1}{3}x_1[n] - 0.5y[n-1] + 0.25y[n-2]\] with the given initial conditions \(y[-1]=0\) and \(y[-2]=1\) and the input sequence \(x_1[n]=\left(\frac{1}{3}\right)^n\), we can use a similar iterative approach.

For \(n = 0\):

\[y[0] = \frac{1}{3}x_1[0] - 0.5y[-1] + 0.25y[-2] = \frac{1}{3} - 0.5 \cdot 0 + 0.25 \cdot 1 = \frac{4}{12} = \frac{1}{3}\]

For \(n = 1\):

\[y[1] = \frac{1}{3}x_1[1] - 0.5y[0] + 0.25y[-1] = \frac{1}{3} \cdot \left(\frac{1}{3}\right)^1 - 0.5 \cdot \frac{1}{3} + 0.25 \cdot 0 = \frac{1}{9} - \frac{1}{6} = -\frac{1}{18}\]

For \(n = 2\):

\[y[2] = \frac{1}{3}x_1[2] - 0.5y[1] + 0.25y[0] = \frac{1}{3} \cdot \left(\frac{1}{3}\right)^2 - 0.5 \cdot \left(-\frac{1}{18}\right) + 0.25 \cdot \frac{1}{3} = \frac{1}{27} + \frac{1}{36} + \frac{1}{12} = \frac{5}{54}\]

And so on...

The solution to \(y[n]\) with the given initial conditions and input sequence is:

\[y[n] = \left\{\frac{1}{3}, -\frac{1}{18}, \frac{5}{54}, \ldots\right\}\]

The iteration process can be continued to find the values of \(y[n]\) for subsequent values of \(n\).

It's important to note that in part (b), the input sequence \(x_1[n] = \left(\frac{1}{3}\right)^n\) was used instead of \(x[n]\) to solve the difference equation.

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It is well known that utilizing a zip file is an effective method for reducing the size of the document in order to boost storage and sharing possibilities. A zipped folder may be smoothly moved from one place (the transmitter) to another without any issues (the receiver).

One or more files can be compressed and stored together in one location using the ubiquitous ZIP file format. As a result, the file size is less and is simpler to transport and store. After transmission, the receiver can use the files in their original form by unzipping (or extracting) her ZIP file.

In order to increase storage and sharing capabilities by lowering the size of the document, it is known that using a zip file is an efficient technique. A zipped folder may be effortlessly transferred without any hiccups from one location (the transmitter) to another (the receiver). Using Zip files has the primary benefit of reducing the time required to send large files over email. The document's quality is unaffected and is identical to the original file when it is compressed using a zip file.

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1. a) African American

2. c) Black people

During the war on drugs, the mandatory minimum sentencing laws for drugs, specifically the disparity between crack cocaine and powder cocaine, disproportionately affected marginalized groups, particularly African Americans. The law imposed the same minimum sentence for five grams of crack cocaine as it did for 500 grams of powder cocaine, despite the significant difference in quantities.

This had a greater impact on African American communities because crack cocaine was more commonly consumed within those communities, while powder cocaine was often associated with white and affluent individuals. The racial disparity in drug use patterns and the harsher sentencing for crack cocaine led to a disproportionate number of African Americans being affected by these laws, contributing to inequities within the criminal justice system.

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1. After-tax cash flows of the project are shown below.  Since the net present value (NPV) of the project is negative, it should not be pursued, which means that you should not take the project.

To determine if the project should be taken, we will calculate the project's net present value (NPV) using a 10% discount rate and comparing it to the initial capital investment of $50,000,000.Net present value (NPV) = Sum of discounted cash flows - Initial investment= $6,811,041 - $50,000,000= -$43,188,958Since the net present value of the project is negative, it should not be pursued, which means that you should not take the project.

Calculating the after-tax cash flows of the project are shown below:Year 1Year 2Year 3Year 4Year Net cash flows12,880,00012,796,00012,729,38712,680,50612,648,036The net present value (NPV) of the project will be calculated using a 10% discount rate and compared to the initial investment of $50,000,000. If the net present value (NPV) of the project is positive, the project should be pursued, but if it is negative, the project should not be pursued.Net present value (NPV) = Sum of discounted cash flows - Initial investment= $6,811,041 - $50,000,000= -$43,188,958. Since the net present value (NPV) of the project is negative, it should not be pursued, which means that you should not take the project.

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Answer: 17 players

Step-by-step explanation: 1780.50-1151.50=629, 629/37 = 17

The number of players the team can bring to the tournament is 17.

A straight line on the coordinate plane is represented by a linear function.

A linear function always has the same and constant slope.

The formula for a linear function is f(x) = ax + b, where a and b are real values.

As per the given,

Budget = $1780.50

Fixed cost (bus rent) = $1151.50

Variable cost = $37 per player.

For n number of players.

Total cost = 1151.50 + 37n

Total cost ≤ total budget

1151.50 + 37n ≤ $1780.50

37n ≤ 629

n ≤ 17

Hence "The number of players the team can bring to the tournament is 17".

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a. The area under the standard normal curve that lies between 2 -2.26 and Z= 0.28 is  0.5981

b. The area under the standard normal curve that lies outside the interval between 2 = -2.49 and z= -0.42 is 0.6601.

c. The area under the standard normal curve to the left of z = 0.33 is 0.6293.

d. The area under the standard normal curve to the right of z = 1.17 is 0.1210.

(a) To find the area under the standard normal curve between z=-2.26 and z=0.28, we can use the calculator to find the area to the left of each value and then subtract them:

\($P(-2.26 \leq Z \leq 0.28) = P(Z \leq 0.28) - P(Z \leq -2.26)$\)

Using the TI-84 calculator, we find:

P(Z ≤ 0.28) = 0.6103

P(Z ≤ -2.26) = 0.0122

Therefore, P(-2.26 ≤ Z ≤ 0.28) = 0.5981

(b) To find the area under the standard normal curve outside the interval between z=-2.49 and z=-0.42, we can find the area to the left of each value and then subtract them from 1 (the total area under the curve):

P(Z<-2.49) = 0.0063

P(Z<-0.42) = 0.3336

1 - P(Z<-2.49) - P(Z<-0.42) = 0.6601

Therefore, the area under the standard normal curve outside the interval between z=-2.49 and $z=-0.42 is approximately 0.6601.

(c) To find the area under the standard normal curve to the left of z=0.33, we can use the calculator to find P(Z ≤0.33):

P(Z ≤ 0.33) = 0.6293

Therefore, the area under the standard normal curve to the left of z=0.33 is approximately 0.6293.

(d) To find the area under the standard normal curve to the right of z=1.17, we can use the calculator to find P(Z > 1.17) and then subtract it from 1:

P(Z > 1.17) = 1 - P(Z ≤ 1.17) = 1 - 0.8790 = 0.1210

Therefore, the area under the standard normal curve to the right of z=1.17 is approximately 0.1210.

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Answer:

3

Step-by-step explanation:

Answer:

I think question is:

(x+4x+2)(2x^2+3x-4)

:(5x+2)(2x^2+3x-4)

5x(2x^2+3x-4)+2(2x^2+3x-4)

10x^3+15x^2-20x+4x^2+6x-8

10x^3+19x^2-14x-8

Answer:

-2 (20x - 25)

Step-by-step explanation:

Answer:

40x - 50

Step-by-step explanation:

10(4x)= 40x

10(-5)= - 50

40x - 50

Answer:

The triangles shown are proportional

Step-by-step explanation:

Two parallel lines are cut by a tranversal so the opposite and corresponding angles are congruent.

B = N

M = M

12 x 2 = 24 , So the sides of the triangle are proportional meaning they are parallel.

Side MN would be 12

Side MP would be 16

The common difference between successive terms in the sequence is -6.5

from the question, we have the following parameters that can be used in our computation:

9, 2.5,

The common difference is calculated as

Difference = Second term - First term

using the above as a guide, we have the following:

Difference = 2.5 - 9

Evaluate

Difference = -6.5

Hence, the common difference is -6.5

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The annual payment for the loan is $48,867.89.

To find how much is the annual payment for the loan, we must first find the total cost of the land and the loan amount.

The total cost of the land is $4,100 × 215 = $881,500.

The down payment is 25% of the total cost, so the down payment is $881,500 × 0.25 = $220,375.

The loan amount is the total cost minus the down payment, so the loan amount is $881,500 - $220,375 = $661,125.

To find the annual payment, we can use the formula A = P(1 + r)^n / [(1 + r)^n - 1], where A is the annual payment, P is the loan amount, r is the annual interest rate (APR), and n is the number of years.

Plugging in the values, we get:

A = $661,125(1 + 0.0675)^20 / [(1 + 0.0675)^20 - 1]

A = $661,125(1.0675)^20 / [(1.0675)^20 - 1]

A = $661,125(3.0878) / (3.0878 - 1)

A = $2,040,756.55 / 2.0878

A = $977,357.72

So the annual payment is $977,357.72 / 20 = $48,867.89.

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