an element in a ring is called an idempotent if . prove that the only idempotents in an integral domain are and . find a ring with a idempotent not equal to 0 or 1.

Speed is calculated by dividing distance by time. Here Sam is cycling at a speed of 15 km/h and Dwight at a speed of 12km/h. So Sam cycles faster.

Speed is the rate of change in distance. so it is calculated using distance/time. Here the distance is in km and time is in minutes. The unit of distance is either m/s or km/h. So we have to do conversions first.

Lets convert the minutes to hours.

Sam cycles for 20 minutes. So 20 min = 20/60 h = 0.33 h

Dwight cycles 30 minutes. So 30 min = 30/60 h = 0.5 h

Now lets calculate the speed.

Speed Sam cycles = 5 km/ 0.33 h = 15 km/h

Speed Dwight cycles = 6 km/0.5 h = 12 km/h.

So Sam is faster than Dwight.

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Answer: To solve the equation 2X = X + 5, we can start by isolating X on one side of the equation by subtracting X from both sides:

2X - X = X + 5 - X

X = 5

Therefore, X = 5 is the solution of the equation 2X = X + 5.

Step-by-step explanation:

The solution for x in the equation 2x = x + 5 is obtained by isolating the variable x, leading to the answer x = 5.

To solve for x in the equation 2x = x + 5, you need to isolate x. Start by subtracting x from both sides of the equation to get 2x - x = x + 5 - x which simplifies to x = 5.

The procedure used here is a standard method in algebra known as isolating the variable. This means the objective is to get the variable (x in this case) alone on one side of the equation.

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Answer:

1. 12x

2. 21x

3. 14y+6x

4. 28x+20y

Step-by-step explanation:

The diameter of a bowling ball that rolls 96 cm down the lane each time it turns once is 16.58 cm

the term called diameter is known as the length of the line through the center that touches two points on the edge of the circle.

Here we know that the ball rolls 96 cm down the lane each time it turns once.

According to the formula of circumference, the total circumference is calculated by using the formula,

C = 2πr

Where the value of r is 96, then

=> c = 2 x π x 96

=> C = 192 x 3.14

=> C = 602.88

Here we have consider that the lane is 10000 cm in length , then the diameter is calculated as,

=> 10000/602.88

=> 16.58

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The percentage of the slices that were eaten will be 30%.

The percentage simply has to do with the a value or ratio which can be stated as a fraction of 100. It should be noted that when we want to we calculate a percentage of a number, we simply divide it and then multiply the value that is gotten by 100.

From the information, it should be noted that each pizza is divided into 10 slices. The total amount of slices eaten will be:

= 1 + 6 + 2

= 9

Total slices = 30

The percentage of the slices that were eaten will be:

= 9 / 30 × 100

= 30%

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The value of K is 20

The LHS (Left Hand Side) reduces to 2 x 10^1005

2 x 10^1005  =k x 10^1004                    

k =[2 x10^1005] / [10^1004] = 2 x 10

k =20                                                    

A positive integer is defined as a whole number greater than zero. All counting numbers are included in the set of positive integers.

Positive numbers include: 1, 2, 88, 800, 9000, and so on. Positive numbers are whole numbers with the symbol (+) in front of the numerical value. Most of the time, the plus sign is simply represented without the symbol. Positive numbers outnumber negative numbers and zero. On the number line, positive numbers are represented to the right of zero

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Answer: v = 33.51 cm^3

Step-by-step explanation:

Plug in radius to equation

V = 4/3 * π * 2^3

V = 4/3 * 8 * π

v = 33.51

Triangle ABC is the preimage and triangle A'B'C' is the image. The equation for the line of reflection is x = 4.

Reflection is a type of geometric transformation where the figure is flipped. In other words, a figure when undergoes reflection becomes it's mirror image.

(A) Pre image is the figure before reflection is done.

So the pre image is triangle ABC.

(B) Image is the reflected figure.

So the image is triangle A'B'C'.

(C) Coordinates of the output are :

A'(8, 9), B'(12, 4) and C'(8, 4)

(D) The line of the reflection is the parallel line to Y axis passing through 4 on the X axis.

So the equation is x = 4.

Hence triangles ABC and A'B'C' are preimage and image respectively. The coordinates for the output are A'(8, 9), B'(12, 4) and C'(8, 4).

The equation of the line of reflection is x = 4.

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The proportion of variation that the regression line can account for is indicated by the coefficient of determination.

56.44% of the variation cannot be explained by the provided regression line. The correlation coefficient for the question is R = - 0.66.

From the provided R value, the Coefficient of determination, R2, can be calculated.

R2 = - 0.662 = 0.4356.

This implies that, the percentage of variation that can be explained is equal to (0.4356) x 100%, or 43.56%.

100% - 43.566% = 56.446% is the percentage of variation that cannot be explained.

As a result, 56.44% of the variation in y cannot be explained.

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Answer: The correct inequality that matches the graph is 6x + y < 3.

This inequality can be graphed by plotting the points (0,3) and (1,9) as the boundary of the solution set, and shading the area above the line. The graph will be a line with a negative slope that pass through the points (0,3) and (1,9) and the shaded area will be above the line, which match the graph you have described.

We can check this by plugging the points (0,3) and (1,9) into the inequality to see if they satisfy it:

6(0) + 3 < 3 => 3 < 3 which is true

6(1) + 9 < 3 => 6 + 9 < 3 which is false

This confirms that the inequality 6x + y < 3 matches the graph.

Step-by-step explanation:

Answer:

10;37°

Step-by-step explanation:

Pythagoras theorem will be used to find the length of EF and the knowledge of complementary angles will be used to solve for angle D

The slope of the linear line given by linear equation y= -x+20 is -1

and the slope of line perpendicular to it is 1.

what is a linear equation?

A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form of a linear equation in one variable is of the form

Ax + B = 0

e.g. x-10=0. Here, x is a variable, A is a coefficient and B is constant.

The standard form of a linear equation in two variables is of the form

Ax + By = C

e.g. 2x-4y=10. Here, x and y are variables, A and B are coefficients and C is a constant.

Now as equation of linear line is y=mx+c

where m=slope, c=constant

For y=-x+20

slope(m)= -1

also for perpendicular lines m1.m2=-1

-1.m2=-1

m=1 (slope of line perpendicular to it)

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The cubic function with the zeros x = -3, x = 0 and x = 1 is given as follows:

y = x³ + 2x² - 3x.

We are given the zeros of the function, hence the function is defined using the Factor Theorem, as a product of the linear factors of the function.

The zeros of the function are given as follows:

Then the linear factors are given as follows:

Considering a leading coefficient of 1, the function is defined as follows:

y = x(x + 3)(x - 1)

y = x(x² + 2x - 3)

y = x³ + 2x² - 3x.

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Using Linear equations, the two equations of the given data are $10 + $250x and $4x

Ax+By=C is the usual form for two-variable linear equations. A standard form linear equation is, for instance, 2x+3y=5. When an equation is given in this format, finding both intercepts is rather simple (x and y).

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."

Using linear Equations,

Let x be the miles covered,

Taxi company 1 charges = $10 + $250x

Taxi company 2 changes = $4x

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Each numbered angle has a measurement of 109°, 109°, and 71°, respectively.

Two rays that come together at a vertex or node, also known as a common point, to produce an angle for any figure.

Angles are frequently expressed in degrees or radians.

Think about triangle

A triangle's internal angles add up to 180°.

URS, UVT, and URT add up to 180°.

35° + 36° + ∠1 = 180°

∠1 = 180° - (35° + 36°)

∠1 = 180° - 71°

∠1 = 109°

The angles 1 and 2 are now vertically opposed. This makes them equal.

∠2 = 109°.

For triangle NQO once more

∠2 + ∠3 + 35° = 180°

36° + ∠3 + 35° = 180°

∠3 = 180° - (35° + 36°)

∠3 = 180° - 109°

∠3 = 71°

As a result, 1, 2, and 3 are 109, 109, and 71 degrees, respectively.

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The volume can be calculated by simply multiplying the base's area by its height. The prism's two sides should be measured using the same units. To get cubic feet, it is ideal to measure in feet.

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The height of the rectangular prism is 8 ft.

The base's area and height alone can be used to determine the volume. The two sides of the prism should be measured in the same units. It's best to measure in feet to get cubic feet.

The rectangular prism's volume is equal to the base's area times the height. Length x Width x Height, in cubic units, equals the volume of a rectangular prism.

The base's area and height alone can be used to determine the volume. The two sides of the prism should be measured in the same units. It's best to measure in feet to get cubic feet.

Given the volume rectangular prism = 220 ft²

(x - 5.5)(x + 3)(x) = 220 ft²

(x - 5.5)(x + 3)(x) = 220 ft²

x³ −2.5x² −16.5x = 220

x = 8

Thus, the height of the rectangular prism is 8 ft.

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The measure of angle P is 82°.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

125° and (109° + ∠N) are alternate angles.

Alternate angles are equal.

125 = 109 + ∠N

∠N = 125 - 109

∠N = 16

Now,

The sum of the triangle ABC is 180.

∠P + ∠M + ∠N = 180

Sides opposite to equal angles are equal.

∠P = ∠M

2∠P + 16 = 180

2∠P = 180 - 16

2∠P = 164

∠P = 164/2

∠P = 82

Thus,

∠P is 82°.

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The angle that is created from the wire and the ground is 39°

Now, According to the question:

The main beam to a circus tent is 75 feet tall and is supported by 120 foot wires that extend to the ground.

We have to find the angle that is created from the wire and the ground.

Based on the given condition:

Using the definition of the sine function, we have that

[tex]sin(a) = \frac{75}{120}[/tex]

then, we can take inverse sine in both sides of the equality to clear a

a = [tex]sin^-^1\frac{75}{120}[/tex]

a = 38.68218745

and rounding to the nearest degree, the answer will be 39 degrees.

a = 39°

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The answer to the question can be calculated by using the average formula.

The average of a set of numbers is calculated by adding all of the numbers together and dividing the sum by the number of numbers in the set. In this case, the five alepeople earned a total of $176,506, and when divided by 5, the average annual income comes to $35,516.

To calculate the fifth aleperson's income, we subtract the income of the first four alepeople from the total income earned, $176,506. Subtracting the income of the first four alepeople, $36,230 + $34,500 + $38,250 + $33,000, gives us a remaining total of $24,026. When we divide this remaining total by 1, the average annual income for the fifth aleperson comes to $24,026.

Therefore, the fifth aleperson earned an annual income of $24,026. This can be expressed using the formula (total income – (income of aleperson 1 + income of aleperson 2 + income of aleperson 3 + income of aleperson 4)) / number of alepeople = income of fifth aleperson. In this case, (176,506 – (36,230 + 34,500 + 38,250 + 33,000)) / 1 = 24,026.

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689,323,148 is 100,000 less than 689,423,148 in the given comparison.

Comparing the digit count is important. Indicating a larger number is the presence of additional digits. We should compare the highest place values, or the digit that is farthest to the left of the numbers, if the number of digits in both numbers is the same.

Compare the amount of digits. A higher number is indicated by more digits. The higher place values should be compared if the number of digits is the same. The next place value to the right should be compared if the digits at the highest place value are the same.          

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Option B is correct :- n ÷ 3

The given verbal expression is " the quotient of a number and 3."

We have to convert this verbal expression to algebraic expression.

The quotient of a number and 3, represents the division between an unknown number and the number 3.so the possible answer is n ÷ 3.

Here "Quotient" means "Division"

Let "n" be a number and it is divided by 3.

So,

we can write "the quotient of n and 3" as n÷3.

Algebraic expression

An algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations . Expressions are made up of terms.

Expression

An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation.

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[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\mathbb{R}50000\\ r=rate\to 0.5\%\to \frac{0.5}{100}\dotfill &0.005\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{per annum, thus once} \end{array}\dotfill &1\\ t=years\dotfill &20 \end{cases}[/tex]

[tex]A = 50000\left(1+\frac{0.005}{1}\right)^{1\cdot 20}\implies A=50000(1.005)^{20} \implies \boxed{A \approx 55244.78} \\\\\\ 55244.78~~ - ~~50000 ~~ \approx ~~ \stackrel{earned~interest}{\boxed{5244.78}}[/tex]

The greatest possible length of a side of a triangle whose perimeter is 1000 and all of whose sides have integral lengths is 400.

We have to determine the greatest possible length of a side of a triangle whose perimeter is 1000 and all of whose sides have integral lengths.

The sides of a triangle have lengths ratio 5:7:8.

The perimeter of triangle is the sum of all sides. So

5x + 7x + 8x = 1000

20x = 1000

Divide by 20 on side we get

x = 50

The length of all sides:

5x = 5 × 50 = 250

7x = 7 × 50 = 350

8x = 8 × 50 = 400

Hence, the greatest possible length of triangle is 400.

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The complete question is:

The sides of a triangle have lengths ratio 5:7:8. What is the greatest possible length of a side of a triangle whose perimeter is 1000 and all of whose sides have integral lengths?

The probability of not finding purple jar is 0.8.

Firstly we will find the probability of drawing purple marble. The formula to be used for this is -

Probability = number of favourable outcomes ÷ total number of outcomes

Number of favourable outcomes = number of purple marbles

Total number of outcomes = sum of the number of marbles

Total number of outcomes = 22 + 26 + 17 + 20

Performing addition

Total number of outcomes = 85

Probability = 20/85

Performing division

Probability = 0.2

Probability of not finding purple = 1 - probability of finding purple

Probability of not finding purple = 1 - 0.2

Performing subtraction

Probability of not finding purple = 0.8

Thus, the probability is 0.8.

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Answer:

B 3pi/2

Step-by-step explanation:

So half of a circle is pi therefore a quarter is pi/2.

So 15 mins is pi/2.

3 * pi/2 =45 mins

3pi/2 = 45 mins

If an equation isn't in the y is mx + b form, we can still find the intercepts by substituting 0 where necessary and solving for the remaining variable.

When y = 0, we solve the equation for x to determine the x-intercept. The line crosses the x-axis at y=0, explaining this. If an equation isn't in the y = mx + b form, we can still find the intercepts by substituting 0 where necessary and solving for the remaining variable.

With x = 0, solve for y to determine the y-intercept.

Utilizing the given points, determine the slope.

In the expression for the line, y = mx + c, include the slope's value.

Now solve the equation y = mx + c to determine the value of c using the values of any of the supplied locations.

Place y = 0 in y = mx + c to determine the x-intercept.

Place x = 0 in y = mx + c to determine the y-intercept.

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The exponential function that represents the table that is given will be A. f(x) = 6(2)^x.

When when x is 6, the value of the function will be A. 384.

It should be noted that in Mathematics, the function simply shows the relationship between the variables that are given.

Based on the table, the exponential function that represents the table that is given will be A. f(x) = 6(2)^x.

In this case, when x is 6, the value of the function will be:

= 6 × 2^x

= 6 × 2^6

= 6 × 64

= 384

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Helicopters would fit in either container is 1 and total weight is 4 pound.

What is Linear system of inequality?

At least two linear inequalities in the same variables make up a system of linear inequality in two variables. The graph of a linear inequality is the graph of all solutions to the system, and the solution of a linear inequality is the ordered pair that resolves all inequalities in the system.

With the exception of the inequality symbol, a linear inequality is nearly identical to a linear equation.

Three basic categories of economic disparity exist:

Let 'x' represent the number of helicopters per box.

3x+14=4x+13

We move all terms to the left:

3x+14-(4x+13)=0

We get rid of parentheses

3x-4x-13+14=0

We add all the numbers together, and all the variables

-1x+1=0

We move all terms containing x to the left, all other terms to the right

-x=-1

x=-1/-1

x=1

Hence, Helicopters would fit in either container is 1 and total weight is 4 pound.

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