Please help me, its to improve my grade

Kwan is utilizing 8% of the entire garden to plant radishes.

Kwan is planting a garden and he is utilizing 1/5 of the garden to plant vegetables. That implies that 1 out of 5 pieces of the garden is being utilized to grow vegetables.

He then, at that point, expresses that he utilizes 2/5 of that 1/5 region for radishes. That implies that 2/5 of the area utilized for vegetables is being utilized to grow radishes.

To find the fraction of the entire garden that is being utilized for radishes, we want to join the two fractions. We can do this by multiplying them together.

At the point when we multiply 1/5 by 2/5, we get 2/25. This fraction can likewise be communicated as a rate by multiplying it by 100.

2/25 * 100 = 8%

So, Kwan is utilizing 8% of the entire garden to plant radishes.

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Answer: 1/3 per friend.

Step-by-step explanation:1/3 1/6*4= 3/3 or 1 whole bag. to find the 1/6, 2/3 multiply by 1/4= 2/12 or 1/6 of popcorn per friend

The four inequalities are a + c ≤ 400, 10a + 5c ≥ 3000, a ≥ 0 and c ≥ 0. The club must sell 200 children tickets and 200 adult tickets.

What is an inequality?

In Algebra, an inequality is a mathematical statement that uses the inequality symbol to illustrate the relationship between two expressions. An inequality symbol has non-equal expressions on both sides. It indicates that the phrase on the left should be bigger or smaller than the expression on the right, or vice versa.

The value for one ticket is - $10

The value for one children's ticket is - $5

The total amount that need s to be earned is - $3000

The number of seats in the auditorium is - 400

Let the number of children be = c and the number of adults be = a.

Then the inequality will be -

a + c ≤ 400

10a + 5c ≥ 3000

a ≥ 0

c ≥ 0

The inequalities will have a straight line as (≤,≥) symbols are used in the inequalities.

Write the two inequalities in equation form -

a + c = 400....(1)

10a + 5c = 3000 or 2a + c = 600....(2)

Subtract equation (1) from (2) -

2a + c - (a + c) = 600 - 400

2a + c - a - c = 200

a = 200

a = 200

Substitute the value of a in equation (1) -

200 + c = 400

c = 400 - 200

c = 200

So, the intersection point is (200,200) and the number of children is 200 whereas the number of adults is 200.

Therefore, the graph is obtained.

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The school drama department is putting on a production and plans to charge $10 per ticket and $5 for a children's ticket. They need to earn at least $3,000 each night for cover the cost. The auditorium has a capacity for 400 people.

Write and graph a system of four inequalities that describe how many of each type of ticket the club must sell to meets its goal.

The expression 1/14 x³y + 8/14 xy² can be rewritten as one fourteenth xy (x² + 8y).

Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.

The given expression is [tex]\frac{1}{14}[/tex] x³y + [tex]\frac{8}{14}[/tex] xy².

We have to take the common factor of both the terms  [tex]\frac{1}{14}[/tex] x³y and [tex]\frac{8}{14}[/tex] xy² outside.

The common factor of both terms is  [tex]\frac{1}{14}[/tex] xy.

[tex]\frac{1}{14}[/tex] x³y + [tex]\frac{8}{14}[/tex] xy² =  [tex]\frac{1}{14}[/tex] xy (x² + 8y)

Hence the given expression can be rewritten as   [tex]\frac{1}{14}[/tex] xy (x² + 8y).

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The system that has the solution (-2, -2, -2) is the one in option C.

x + 2y = -6

y + 2z = -6

x - y - z = 2

We want to see which of the given systems has the solution (-2, -2, -2).

To check that, we only need to evaluate all the equations of the system on these values and see if all the equations are true.

If we look at the third system we will get:

x + 2y = -6

y + 2z = -6

x - y - z = 2

Replacing all the values of the point we get:

-2 + 2*(-2) = -6

-2 + 2*(-2) = -6

-2 + 2 + 2 = 2

All these equations are true, thus, the correct option is C.

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The missing value in the triangle is given as follows:

28.

The theorem used to solve this problem is given as follows:

A line parallel to one side of a triangle divides the other two proportionately.

As 28 - 16 = 12, the proportional relationship between the side lengths is given as follows:

12/21 = 16/x.

Applying cross multiplication, the value of x is obtained as follows:

12x = 21(16)

Simplifying by 4, we have that:

3x = 21(4)

Simplifying by 3, we have that:

x = 7 x 4

x = 28.

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If the dimensions of the rectangular fish tank are n , 6 and 18 , then the polynomial in the standard form for Volume of fish tank is  V = 108n .

The dimensions of the fish tank in shape of rectangular prism re :

length = n , width = 6 and height = 18 ;

the formula to be used to calculate the volume of rectangular fish tank is written as : Volume = length × Width × Height ;

substituting the values in the volume formula ,

we get ;

Volume of tank = n × 6 × 18 ;

= n × 108 ;

= 108n .

Therefore , the polynomial in the standard form can be written as V = 108n .

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The general solution of an exact differential equation can also be found by solving the associated homogenous equation and adding the particular solution obtained from the original equation.

1. Identify the exact differential equation.

2. Find the integrating factor by multiplying the equation by an expression of the form e^(f(x)).

3. Multiply the integrating factor with the equation to make it exact.

4. Integrate both sides of the equation to obtain the general solution.

5. Check the solution by differentiating it to confirm that it satisfies the original equation.

6. Add the particular solution obtained from the original equation to the homogenous solution to get the general solution.

The general solution of an exact differential equation can be found by using an integrating factor. An integrating factor is a function of the independent variable which can be multiplied with the equation in order to make it exact. Once the equation has been made exact, it can be solved using the standard integration techniques. In addition, the general solution can be found by solving the associated homogenous equation and then adding the particular solution obtained from the original equation.

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The age of Bryson today is 11 1/3 years

From the question, we have the following mathematical statements:

Bryson's dad age = 38

Bryson's dad age = 4 + 3 * Bryson's age

Represent Bryson's age with x

So, we have the following equation

Bryson's dad age = 38

Bryson's dad age = 4 + 3x

substitute the known values in the above equation, so, we have the following representation

4 + 3x = 38

Evaluatet the like terms

3x = 34

Divide by 3

x = 11 1/3 years

Hence, Bryson's age as per the mathematical statement is 11 1/3 years

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Answer:

So there are 11 mg of calcium in apples.

38 mg of calcium in oranges.

And 6 mg of calcium in bananas.

So if he ate 7 apples, that adds up to:

7 * 11 = 77 mg of calcium.

4 oranges adds up to:

4 * 38 = 152 mg of calcium

2 bananas adds up to:

2 * 6 = 12 mg of calcium.

In total:

77 + 152 + 12 = 241

Alen ate 241 mg of potassium

Step-by-step explanation:

Hope it helps! =D

The required two positive numbers are 11 and 14 which product is 154 and the sum is a minimum.

A number system is defined as a way to represent numbers on the number line using a set of symbols and approaches. These symbols, which are known as digits, are numbered 0 through 9.

The product is 154 and the sum is a minimum.

As per the question, the required solution would be as:

product           sum  

1 x 154         1 + 154 = 155

2 x 77          2 + 77 = 79

11 x 14          11 + 14 = 25

7 x 22         7 + 22 = 29

Here, we can arrange these numbers as:

25 < 29 < 79 < 155

This means the sum (11 + 14 = 25) is a minimum.

So the minimum value = 11

And the maximum value = 14

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When White Oak is 15 miles from River City and the scale is 1 in.=3 mi, the distance in the map is 5 inches.

The ratio that describes the relationship between the actual figure and its model is called the scale. It serves as a representation of the actual figures in smaller units on maps. A scale of 1:5, for instance, means that 1 on the map is equivalent to the size of 5 in the real world.

A scale of 1:5, for instance, means that the size of 1 unit in the drawing corresponds to the size of 5 units in the real world. A scale of 1:5 is evident, for instance, if a giraffe that stands 150 inches tall in real life is depicted on the drawing as 30 inches tall.

In this case, when White Oak is 15 miles from River City and the scale is 1 in.=3 mi, the distance in the map is:

= 15 / 3

= 5 inches.

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The output of a function is returned by the inverse function, which also returns the initial value. Consider the inverse relationship between the functions f and g: f(g(x)) is g(f(x)) is x.

Write the function y as a function of x, i.e., y = f(x), and then solve for x as a function of y, to determine the inverse of a function.

steps for determining a function's inverse.

In the equation expressing the function, swap out f(x) with y.

Swap out x and y. To put it another way, swap out every x for a y and vice versa.

Solve for y.

Change y to f-1 (x).

The output of a function is returned by the inverse function, which also returns the initial value. Consider the inverse relationship between the functions f and g: f(g(x)) = g(f(x)) = x.

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The distance travelled by the car during this time  by using single  appropriate trapezium is  26.25 and the answer provided is an underestimate

A) Using a single appropriate trapezium, the estimated distance travelled by the car during the 30 seconds is approximately 55 metres.

This is calculated by taking the area of the trapezium formed by the two points of the speed graph: 8m/s and 6m/s.

The area is calculated by taking the average of the two points, multiplied by the time duration:

Area = (8+6/2) * 30

Area = 7*30

Area = 210

The area of the trapezium is then divided by the speed of the car at the start of the journey (8m/s) to get the estimated distance travelled:

Distance = 210/8

Distance = 26.25

This is rounded up to give an estimated distance travelled of 55 metres.

B) The answer of 55 metres is an underestimate of the actual distance travelled by the car. This is because the trapezium method only takes into account the start and end points of the graph, and not any of the other points in between. The actual distance travelled by the car is likely to be higher as the speed of the car is likely to have been greater at points in between the start and end points.

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The function g(x) with a graph that is the reflection of the graph of f(x) = - square root 14x across the x-axis is given as follows:

[tex]g(x) = \sqrt{14x}[/tex]

The parent function f(x) is defined as follows:

[tex]f(x) = -\sqrt{14x}[/tex]

The rule for a reflection over the x-axis is given as follows:

g(x) = -f(x).

Meaning that only the signal of the function is changed.

Removing the negative signal, the function g(x) is then defined as follows:

[tex]g(x) = \sqrt{14x}[/tex]

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Figure ABCDE has vertices A(−3, 3), B(2, 3), C(5, −2), D(0, −3), and E(−3, −2) So the Area of figure = 36.5 sq units

To Find: Plot the points  

Decompose Figure ABCDE into rectangles and triangles.

lengths of Sides AB and AE.

area of Figure ABCDE

Plot ( x , y) ( x , y)

If x is positive, start right away from the origin. If it's negative, turn left.

If +ve, move y upward; if -ve, move y downward.

Plotted and labeled points

A(−3, 3), B(2, 3), (2, 3),

AB's length is five.

A(−3, 3) E(−3, −2).

AE length is 5

two triangles and one rectangle

area of a rectangle equal 5 * 5, or 25 square units.

The right angle triangle's area is equal to (1/2) * 5 * 3 = 7.5 square units.

another triangle's area is equal to (1/2) * 8 * 1 square units.

Figure's surface area is 25 + 7.5 + 4 = 36.5 sq units.

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Answer:

x+x+18+18=48inches

2x+36 = 48 inches

2x = (48-36) inches

2x = 12 inches

x = 6 inches

The area of square = 72.0 in The surface area of a shape is measured using the area.use square units for area when you can multiply the length to determine the area .

Option B is correct.

The quantity of square units required to completely fill a square is known as the area of a square. The region that lies inside the confines of a flat item or a two-dimensional figure is generally referred to as the area. The measurement is made using square units, with square metres serving as the standard unit (m²).

Area of square = Side ²

side=6√2

Area=?

Area of square = ( 6√2)²

                            72 .0 inches.

This is because the sum of two lengths is used to calculate an area. If those are, for instance, measured in meters, you would multiply some meters by others. Consequently, the expression for the area in square meters. Similar to volume: You divide three lengths by.

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Answer: Points: (0, -3), and (9, 0)

Step-by-step explanation:

In order to graph an equation, you find 2 pairs of points and then just connect them into a line. (The x intercepts and the y intercepts are helpful)

One pair: (x, y) = (0, -3)

Another pair: (x, y) = (9, 0)

Now just connect them to get the line :>

The total number of quarters James and his brother will be 5x

Addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.

James has x quarters while his brother has 4 times as many quarters as James.

So, for determining the value of the total number of quarters James's brother have we will multiply the value of the total number of quarter James have by 4.

So, the value of the total quarter James's brother has = 4*x = 4x

Now for determining the total number of quarters of James and his brother we will add both values.

The total number of quarters James and his brother will be= x+4x = 5x

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2880 ways are there to list the digits { 1, 2, 2, 3, 4, 5, 6 } so that identical digits are not in consecutive positions.

The list of the digits is: { 1, 2, 2, 3, 4, 5, 6 }

Here we have to determine how many ways are there to list the digits { 1, 2, 2, 3, 4, 5, 6 } so that identical digits are not in consecutive positions

We have one number in consecutive positions in this question

That is: (2, 2)

Number of ways that (2,2) are in consecutive positions = [tex]$\frac{6!}{2!}[/tex] = 360

The permutation of 1, (2, 2), 3, 4, 5, 6 = 6!

6! = 720

To get the total number of permutations

= [tex]$\frac{7!}{2!}[/tex]

= [tex]$\frac{5040}{2}[/tex]

= 2520

The number of ways that 2 identical digits are not consecutively positioned

= 2520 - 360 + 720

= 2880

There are 2880 ways to list the digits { 1, 2, 2, 3, 4, 5, 6 }.

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A value we can put in place of a variable (such as x) that makes the equation true and the answer is  13/-10

A number that is capable of taking on any one of a range of values.

A variable's symbolic representation.

Something which can change.

A variable that could alter in a scientific experiment.

A property that can be measured and given varied values is known as a variable.

Variables include things like height, age, income, province of birth, school grades, and kind of dwelling.

Independent, dependent, and controlled variables make up the three primary variables. A automobile driving down various surfaces is one example.

A variable in programming is a value that can change based on external factors or data that has been supplied to the program.

3x+5y

= 0x+5y

=-3x+y

=-3/5x + y

= 3/5 13x + 10y

=0x + 10y

=13x+y

=13/- 10

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The amount of chlorine in the tank as a function of time is:

C(t) = 0.05 * e^(-6/400*t)

Let C(t) be the concentration of chlorine in the tank at time t and V(t) be the volume of the tank at time t.

At t=0, we know that:

C(0) = 0.05 g/l

V(0) = 400 l

As fresh water is pumped in at a rate of 4 l/s and the mixture is pumped out at a rate of 10 l/s, the rate of change of the volume of the tank is:

dV/dt = 4 - 10 = -6 l/s

As the concentration of chlorine is being diluted by the addition of fresh water, the rate of change of the concentration is proportional to the rate of change of the volume. So we can write:

dC/dt = - k * C(t) * (dV/dt)

where k is a proportionality constant.

We can integrate the above equation with respect to time to find the concentration of chlorine in the tank as a function of time:

C(t) = C(0) * e^(-kt)

In order to find the value of k we can use the initial condition C(0) = 0.05 g/l and V(0) = 400l

0.05 = C(0) * e^(-k*0)

0.05 = C(0)

so we can substitute this value into the above equation and solving for k:

C(0) = 0.05 = 0.05 * e^(-k*0)

0.05 = 0.05

so k = -6/400

Finally, the amount of chlorine in the tank as a function of time is:

C(t) = 0.05 * e^(-6/400*t)

This equation expresses the amount of chlorine in the tank as a function of time t. As time goes on, the concentration of chlorine will decrease exponentially.

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The amount of money Rashon would need to invest is equal to $8,300.46.

Mathematically, the compound interest on an investment can be calculated by using this mathematical expression:

A(t) = P(1 + r/n)^{nt}

Where:

In this scenario, Rashon's investment is compounded quarterly at an interest rate of 6.9% as follows:

Quarterly interest rate = 0.069/4

Quarterly interest rate = 0.01725%

20,200 = P(1 + 0.01725)^{4 × 13}

20,200 = P(1.01725)^52

20,200 = 2.4336P

Principal, P = 20,200/2.4336

Principal, P = $8,300.46.

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Answer:

In this scenario, Rashon's investment is compounded quarterly at an interest rate of 6.9% as follows:

Quarterly interest rate = 0.069/4

Quarterly interest rate = 0.01725%

20,200 = P(1 + 0.01725)^{4 × 13}

20,200 = P(1.01725)^52

20,200 = 2.4336P

Principal, P = 20,200/2.4336

Principal, P = $8,300.46.

Using inequality, the minimum number of towels in the pack is t = 6.

We can start by using the inequality 2.85t > 22, where t is the number of towels in the pack.

To find the minimum number of towels, we can use the smallest possible value for t that satisfies the inequality. Since the hand towels were available in packs of 4, 5, 6, and 8, we can use t = 4 in the inequality:

2.85(4) > 22

Simplifying the left side of the inequality gives:

11.4 > 22

This is not true, so t = 4 does not satisfy the inequality.

Next, we can use t = 5:

2.85(5) > 22

Simplifying the left side of the inequality gives:

14.25 > 22

This is also not true, so t = 5 does not satisfy the inequality.

We can keep doing this for t = 6, and t = 8, we will find out t=6 is the minimum value of t that satisfies the inequality.

2.85(6) > 22

Simplifying the left side of the inequality gives:

17.1 > 22

This is true, so t = 6 is the minimum number of towels in the pack.

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deci nu știi să faci matematică?

Answer:

x = 14.83 (to the nearest hundredth)

Step-by-step explanation:

Following the Pythagoras' Theorem,

a² + b² = c²

x² + 6² = 16²

       x² = 220

     ∴ x = 14.83 (to the nearest hundredth)

The inequality for this problem is defined as follows:

The Cartesian plan representation of the inequality is given by the image presented at the end of the answer.

The two conditions for the inequality are given as follows:

These conditions are plotted as follows:

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Answer: The equation provided is already solved, on the left side of the equation it shows the step by step solution of the equation:

3(x-2)+x-1 = 3(x-2) + x - 1 = 5

3x - 6 + x - 1 = 5

Combining like terms

4x - 7 = 5

Adding 7 to both sides

4x = 12

Dividing both sides by 4

x = 3

So the value of x that makes the equation true is x = 3

Step-by-step explanation: