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Round 21245 to the nearest thousand

The Linear Equations that shows the given problem statement will be the ones given in option D.

i.e.

x + y = 50

2x + 3y = 120

What are linear equations?

A linear equation is one in which the variable's maximum power is always 1. A one-degree equation is another name for it. A linear equation in one variable has the conventional form Ax + B = 0. In this equation, x is a variable, A is a coefficient, and B is constant. A linear equation in two variables has the conventional form Ax + By = C. The variables x and y are variables, the coefficients A and B are coefficients, and the C is a constant.

e.g.

y = 8x - 9    -   Linear

y = x2 - 7    -   Non-Linear, the power of the variable x is 2

Now,

Let's let x = the number of Multiple choice problems and

y = the number of free response questions.

Therefore, the equation will be

x + y = 50

Since the multiple choice problems are worth 2 points and the free response questions are worth 3 points and the total number of points is 120, then, the equation will be

2x + 3y = 120

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Answer: The Linear Equations that shows the given problem statement will be the ones given in option D.i.e.x + y = 502x + 3y = 120What are linear equations?A linear equation is one in which the variable's maximum power is always 1. A one-degree equation is another name for it. A linear equation in one variable has the conventional form Ax + B = 0. In this equation, x is a variable, A is a coefficient, and B is constant. A linear equation in two variables has the conventional form Ax + By = C. The variables x and y are variables, the coefficients A and B are coefficients, and the C is a constant.e.g.y = 8x - 9    -   Lineary = x2 - 7    -   Non-Linear, the power of the variable x is 2Now,Let's let x = the number of Multiple choice problems andy = the number of free response questions.Therefore, the equation will bex + y = 50Since the multiple choice problems are worth 2 points and the free response questions are worth 3 points and the total number of points is 120, then, the equation will be2x + 3y = 120

Step-by-step explanation:hope this helps 0^0

Triangle Proportionality Theorem is defined by a line parallel to one side of a triangle divides the other two sides proportionally.

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

We know that;

Triangular Proportionality Theorem states that:

''If a line parallel to one side of a triangle intersects the other two sides, then it divides those sides proportionally.''

Therefore, Triangle Proportionality Theorem is defined by a line parallel to one side of a triangle divides the other two sides proportionally.

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Answer:

0.81

Step-by-step explanation:

No, the flag pole does not form a 90° angle with the ground.

We can use the Pythagorean theorem to find the length of the flag pole, which states that in a right triangle, the sum of the squares of the two shorter sides equals the square of the longest side (the hypotenuse).

Let x be the length of the flag pole. Then, we have:

x² = (20 - x)² + 28.9²

Expanding and solving for x, we get x = 30.8.

Therefore, the length of the flag pole is 30.8 feet, which is greater than the height of 21 feet. This means that the angle between the flag pole and the ground is not 90°, but rather less than 90°.

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Step-by-step explanation:

61 pounds for 8 acres

1 pound for 8/61 = 0.131147541... ≈ 0.13 acres

6 pounds for $4

$1 for 6/4 = 3/2 = 1.5 pounds

Answer:

H(x) = (x - 5) * (1 - 0.25) = x - 5 - 0.25x = 0.75x - 5

Answer:

The function H(x) that represents how much you would pay if you use the mall coupon followed by applying the discount from the store would be:

H(x) = (x - 5) * 0.75

Step-by-step explanation:

First, we apply the mall coupon by subtracting $5 from the original cost of the jeans represented by x. This gives us the function f(x) = x - 5.

Next, we apply the store discount of 25% by multiplying the result of f(x) by 0.75. This is because 25% expressed as a decimal is 0.25, and to apply a discount, we multiply by the decimal form of the percentage (1 - decimal form).

So, the final function H(x) represents the cost of the jeans after both the mall coupon and store discount have been applied, and is equal to (x - 5) * 0.75.

The equation of the tangent line at any point on the curve is y = f'(x)x + c. For the line to be horizontal, its slope has to be zero, meaning that f'(x) = 0. Therefore, the coordinates of all points on the curve with a horizontal tangent line are those points (x, f(x)) such that f'(x) = 0.

The equation for any line tangent to a curve at a given point (x, f(x)) is given by the equation y = f'(x)x + c, where c is a constant. This equation is derived from the definition of the derivative, which is the instantaneous rate of change of a function at a given point. The slope of this line is equal to the derivative of the curve at the given point, or f'(x). A line is horizontal when its slope is equal to zero, meaning that f'(x) = 0. Therefore, the coordinates of all points on the curve at which the line tangent to the curve at that point is horizontal are all points (x, f(x)) such that f'(x) = 0. This is because a line with a slope of zero is always horizontal, regardless of the value of the constant c. So, in order to find the coordinates of all points on the curve at which the line tangent to the curve at that point is horizontal, we must find all points (x, f(x)) such that f'(x) = 0.

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Answer:

the teacher does not have enough paint and he needs 1351.5-1324.8 = 26.7 square cm more paint.

Step-by-step explanation:

The canvas each student has is 5.3 cm wide and 8.5 cm tall. The area of the canvas is (5.3 cm)(8.5 cm) = 45.05 square cm.

The art teacher has 6 bottles of paint, each bottle covers 220.8 square cm of canvas. So he has 6220.8 = 1324.8 square cm of paint.

There are 30 students in the class and each student has a canvas of 45.05 square cm. So in total the students have 30*45.05 = 1351.5 square cm of canvas.

The teacher has 1324.8 square cm of paint and the students have 1351.5 square cm of canvas.

Therefore the teacher does not have enough paint and he needs 1351.5-1324.8 = 26.7 square cm more paint.

There is no solution when the lines that make up a system are parallel since the two lines do not share any points.

A linear equation with two variables has the for [tex]ax + by + c = 0[/tex], where variables are belongs to R. An A system of linear equations that cannot be solved is a pair of inconsistent linear equations. We can determine whether a system of linear equations has no solution by comparing the coefficients of the equations in the system.

Take into account the pair of linear equations in x and y:

[tex]a1x + b1y + c1 = 0\\a2x + b2y + c2 = 0[/tex]

There won't be a solution if [tex]\frac{a_1}{a_2}= \frac{b_1}{b_2}=\frac{c_1}{c_2}[/tex].

An inconsistent pair of linear equations is the name given to this kind of equational system. The system of equations cannot be solved if the graph's lines are parallel.

So here, both equations are called no solution line.

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The ants there are more blue whales  with the marging of 1.06 * 10^13 in  ants there are then blue whales in scientific notation.

The concept that will be used here is division. A division is the action of dividing a sum into equal pieces. For instance, we may split a group of 20 people into four groups of 5, five groups of 4, and so on.

The number of the blue whales from the figure is 4.7*10^3

The number of the blue ants from the figure is 5*10^16

Then the nuber of the more ants

= 5*10^16 / 4.7*10^3

= 1.06 * 10^13.

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Yes, this confidence interval provides evidence that the average battery life of this ipad is not 10 hours, since the interval does not contain 10 hours.

Yes, this confidence interval provides evidence that the average battery life of this ipad is not 10 hours. The 99% confidence interval for the mean battery life of this ipad is (8.45, 10.05) hours. This means that 99% of the time, the true mean battery life of the ipad will be between 8.45 and 10.05 hours. Since the interval does not contain 10 hours, it is evidence that this ipad does not have an average battery life of 10 hours. This is because the interval suggests that there is only a 1% chance that the true mean battery life is 10 hours, which is not enough evidence to support the claim that the latest ipad has an average battery life of 10 hours.

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The corners of the square touch the circular plot at points W, X, Y, Z. The distance from point W to Y is equal to diameter of the circular plot, that is 14.

A square sand box is in a circular plot of grass so that the corners of the square sandbox  touch the edge of circular the plot. The vertices are W, X, Y, and Z. This situation can be depicted in the attached picture.

The distance from point W to Y is equal to the diameter of the circle.

WY = d = 2r

( d = diameter, r = radius)

The formula for the area of a circle is given by:

A = πr²

49π = πr²

49 = r²

r = ±√49 =  ± 7

Since radius is always a positive number, hence,

r = 7

Therefore,

WY = 2r = 2 x 7 = 14

Your question is incomplete, most likely your question was:

In a certain playground, a square sand box rests in a circular plot of grass so that the corners of the sandbox just touch the edge of the plot of grass at points W, X, Y and Z, as shown. What is the distance from point W to point Y. The area of the circular plot is 49π

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The three consecutive integers are 137 , 138 and 139

Given that

Numbers that follow each other continuously in the order from smallest to largest are called consecutive numbers.

Consecutive Even Numbers:

Even numbers are numbers that end with 0, 2, 4, 6 or 8. The examples of consecutive even numbers are:0, 2, 4, 6, 8, 10, 12, …

Consecutive Odd Numbers:

Odd numbers are numbers that end with 1, 3, 5, 7 or 9. The examples of consecutive odd numbers are:1, 3, 5, 7, 9, 11, 13, 15, ….

there are three consecutive integers

let's assume that consecutive integers are x, x+1 and x+ 2

given that  the sum of the first and the third number is two hundred and seventy-six

x + (x+2) = 276

2x + 2 = 276

2x = 276 - 2

2x = 274

x = 137

The three consecutive integers are 137 , 138 and 139

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Three circles of radius s are drawn in the first quadrant of the xy-plane.

[tex]$r/s$\\[/tex] =9/1 =9

Set [tex]$s$[/tex] =1 so that we only have to find [tex]$r$[/tex].

Draw the segment between the center of the third circle and the large circle; this has length [tex]$r+1$[/tex]. We then draw the radius of the large circle that is perpendicular to the x-axis, and draw the perpendicular from this radius to the center of the third circle.

This gives us a right triangle with legs [tex]$r-3,r-1$[/tex]and hypotenuse [tex]$r+1$.[/tex]

The Pythagorean Theorem yields:

[tex]$(r-3)^2 + (r-1)^2 = (r+1)^2$$r^2 - 10r + 9 = 0$$r = 1, 9$Quite obviously $r > 1$, so $r = 9 \boxed{(D)}$.[/tex]

Three circles of radius s are drawn in the first quadrant of the x y -plane.

[tex]$r/s$\\[/tex] =9/1 =9

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Answer:

A = 18π cm²

Step-by-step explanation:

the area (A) of the shaded sector is calculated as

A = area of circle × fraction of circle

  = πr² × [tex]\frac{80}{360}[/tex] ( r is the radius , here r = 9 )

 = π × 9² × [tex]\frac{8}{36}[/tex]

 = 81π × [tex]\frac{2}{9}[/tex]

= 9π × 2

= 18π cm²

We must first calculate the area of a single tile in order to figure how many floor tiles are required to cover a space that is 1080 square meters.

Since the area of a parallelogram is equal to its base times its height, the tile's area is 24 x 10 cm, or 240 [tex]cm^{2}[/tex].

Since one square meter equals 10,000 square centimeters, we divide by 10,000 to convert this area to square meters: 240 [tex]cm^{2}[/tex] / 10,000 = 0.024 c[tex]m^{2}[/tex]

Thus, a single tile has a surface area of 0.024 square meters.

We divide a room's 1080 square meters by a tile's area to determine how many tiles are required to completely cover the space:

1080 [tex]m^{2}[/tex] / 0.024 [tex]m^{2}[/tex]= 45,000

 Therefore ,45,000 floor tiles would be required to cover a space that is 1080 square meters in size.

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Answer:

272 units^2

Step-by-step explanation:

1) Find area of whole figure which is a trapezoid.

Area of trapezoid = ((18+34)/2)*16 We are adding the bases, dividing by 2 and multiplying by height. This is the formula to find the area of a trapezoid.

So Area of trapezoid = 416 units^2

2) Find area of non-shaded figure which is a triangle.

Base= 18, Height= 16

Area of triangle = (16*18)/2 We are multiplying the base and height which is the formula to find the area of a triangle.

So Area of triangle = 144 units^2

3) Subtract non-shaded figure from whole figure to get shaded figure.

416-144 = 272 units^2

Hope this helps :)

The required sum of the coordinate of T is given as 9.

Coordinate, is represented as the values on the x-axis and y-axis of the graph. while the coordinate x is called abscissa and the coordinate the y is called ordinate.

Here,
The coordinates of the endpoints of RS are R(4, -8) and S(25, -1).
Ratio ST / RT = 4 / 3 = n/m

Coordinates of the point are given by section formula,
x = mx₁ + nx₂ / m  + n ; y =  my₁ + ny₂ / m  + n

Substitute the values,
x = 3 × 4  + 25 × 4 / 4 + 3 ; y = 3 × -8  + 25 × -1 / 4 + 3
x = 16                               ; -7

Coordinates of T = (x ,y) = (16, -7)

Sum of the coordinate of T = 16 + {-7} = 9

Thus, the required sum of the coordinate of T is given as 9.

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The product of the value of the area of square ABCD and the value of the perimeter of square ABCD is 500 cm^3.

According to the provided data, as each dot is 1 cm from its nearest horizontal and vertical neighbors and the square is located on the 5 by 5 square grid, the length of each side of square is 5 cm. The formula for the area of square is given by:

Area = s^2 where s is the side of a square

When s = 5 cm

Area = 5^2 = 25 cm^2

The formula for the perimeter of square is given by:

Perimeter = 4s

Perimeter = 4(5) = 20 cm

Hence, the product of the area and perimeter = 25cm^2*20cm = 500 cm^3.

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The value of the line integral ∫Cxe^{yz}ds is approximately  8.645×10⁻⁵.

Given the line integral ∫Cxe^{yz}ds, where C is the curve r(t) = (t, 2t, -4t) for 1 ≤ t ≤ 2.

To convert this line integral to an ordinary integral with respect to the parameter, we need to express the integrand xe^{yz} in terms of the parameter t. We can do this by substituting r(t) into the integrand, giving us

te^{(2t)(-4t)}

= te^{-8t²}

Next, we can use the change of variable formula: ∫Cxe^{yz}ds = ∫[1,2]xe^{yz}||r'(t)||dt

We know that r'(t) = (1, 2, -4), so

||r'(t)|| = √(1² + 2² + (-4)²)

= √(17)

So the new integral becomes ∫[1,2] √(17)te^{-8t²} dt

On calculating ∫[1,2] √(17)te^{-8t²} dt ≈ 8.645×10⁻⁵

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The system of equations that represents Elliott's situation is:

[tex]\begin{cases} 2h = 2h \\ s = 2h \\h + s = 202020 \end{cases}[/tex]

The system of equations for Elliott's situation can be represented as follows:

Let h be the number of hats Elliott makes and s be the number of scarves she makes.

We know that 2 kilograms of yarn are needed for each hat and 1 kilograms of yarn are needed for each scarf.

Therefore, the equation to represent the total amount of yarn used for hats is:

h * 2 = 2h

And the equation to represent the total amount of yarn used for scarves is:

s * 1 = s

Now, we know that Elliott wants to use twice as much yarn for scarves as for hats. This can be represented as:

s = 2h

Finally, we know that Elliott wants to make a total of 202020 items. This can be represented as:

h + s = 202020

Combining all of the equations, we get:

[tex]\begin{cases} 2h = 2h \\ s = 2h \\h + s = 202020 \end{cases}[/tex]

Therefore, the system of equations that represents Elliott's situation is:

[tex]\begin{cases} 2h = 2h \\ s = 2h \\h + s = 202020 \end{cases}[/tex]

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We can use algebra to set up and solve a system of equations to determine the size of a rectangle given the given information.

Step 1: Assign the rectangle's width and length the letters "w" and "l," respectively. We can determine the rectangle's 24 cm perimeter from the problem. The formula P = 2l + 2w = 24 cm can be used to draw up an equation since the perimeter of a rectangle is equal to the total of its four sides.

 Step 2: Using the additional knowledge that the length is 3 cm longer than the width, we can construct a second equation as follows: l = w + 3 cm.

Step 3: We can change the variable "l" in the first equation to read "w + 3," making P = 2(w + 3) + 2w = 24 cm. As a result, we can calculate 2w + 2(w + 3) = 24 cm.

Step 4: Finding the value of w: 24 cm = 2w + 2w + 6.

Step 5: Condensing the formula: 4w = 18 cm.

Sixth step: multiply both sides by 4 to get w = 4.5 cm.

Step 7: Using the second equation, we can get the length now that we know the width: l = w + 3 cm = 4.5 + 3 = 7.5 cm.

  Therefore the answer is option c , width is 4.5 and length is 7.5 .

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Answer:

x^3(4+5x^3)cuberoot(x)

Step-by-step explanation:

In order to add the two problems, you need to make sure the radical is the same. Since the cube root of 8x is 2 cuberoot(x) and the cube root of x^10 is x^3 cuberoot(x) this allows the radical to be the same so we can add them.

Now whenever you take out something from within the radical, you multiply it to whatever it is already next to it. So, you would get 4(x^3) cuberoot(x) + 5x^3(x^3) cuberoot(x) From here you get 4(x^3) cuberoot(x) + 5x^6 cuberoot(x).

To finally simplify it, you can put the addition (because the x exponent outside of the cube root isnt the same, you can't add the 4 and 5) so you can get (We can put the x^3 outside of the parenthesis because both numbers have x^3)  x^3(4+5x^3)cuberoot(x)

Answer:

153.958 [tex]cm^{2}[/tex]

Step-by-step explanation:

a = [tex]\pi r^{2}[/tex]

a = 3.142([tex]7^{2}[/tex])     The radius is half of the diameter 14/2 = 7

a = 3.142(49)

a = 153.958

Answer:

[tex]\frac{12}{25}[/tex]

Step-by-step explanation:

[tex]\frac{12}{(2+3)^{2} }[/tex]

[tex]\frac{12}{5^{2} }[/tex]

[tex]\frac{12}{25}[/tex]

Answer:

w = 3

v = 8

Step-by-step explanation:

v + w = 11 can be written

v = 11-w  substitute this for v

2v - w = 16

2(11 -w) - w = 16   Distribute the 2

22 - 2w = 16  Subtract 22 from both sides

22 - 22 -2w = 16 - 22

-2w = -6  Divide both sides by -2

[tex]\frac{-2w}{-2}[/tex] = [tex]\frac{-6}{-2}[/tex]

w = 3

v = 11 - w

v = 11 -3

v =8

Check:

v + w = 11

8 + 3 = 11

11 = 11   Checks

2v - w = 16

2(8) - 3 = 16

19 - 3 = 16

16 = 16  checks

Answer:

Slope of a parallel line :      [tex]\boxed{-\frac{7}{5}}[/tex]

Slope of a perpendicular line:      [tex]\boxed{\frac{5}{7}}[/tex]

Step-by-step explanation:

Parallel lines have same slope

Perpendicular line will have a slope which is the negative of the reciprocal of the line. In other words, the product of the two slopes should be - 1

[tex]\textrm{First convert the line equation to slope-intercept form } y = mx + b\\\\-7x - 5y = -1\\\\\textrm{Add 7x to both sides }\\\\-5y = 7x -1\\\\\textrm{Divide both sides by -5}\\\\y = -\dfrac{7}{5} x+ \dfrac{1}{5}\\\\[/tex]

The slope of this line is
[tex]-\dfrac{7}{5}[/tex]
which is the coefficient of x

A parallel line will also have the same slope of
[tex]-\dfrac{7}{5}[/tex]  
ANSWER 1

A perpendicular line will have slope
[tex]- \dfrac{1}{-\dfrac{7}{5}} = \dfrac{5}{7}[/tex]
ANSWER 2

Check by multiply both slopes to see if it results in  - 1

[tex]-\dfrac{7}{5} \times \dfrac{5}{7} = -1[/tex]

Step-by-step explanation:

always bring the equation into the form

y = ...

in that case the slope is simply the factor of x.

-7x - 5y = -1

-5y = 7x - 1

y = (-7/5)x + 1/5

so, the slope is -7/5.

a parallel line must have the same slope : -7/5.

a perpendicular slope turns the original y/x slope upside-down and flips the sign :

5/7

Using a Venn diagram we find that there are 400 people who have a TV and a pet but not a car.

A Venn diagram is an illustration that uses circles to show the relationships among things or finite groups of things.

Given, Total of 6500 people, in which,

5100 had car

5420 had a television set

4800 had a TV and a car

1500 had a TV and a pet

1250 had a car and a Pet

1100 had a TV, a car and a pet

Therefore, no of people having a TV and a pet but not car

= n(TV & Pet)-n(TV, car & pet)

= 1500 - 1100

= 400

Hence, there are 400 people who have a TV and a pet but not a car.

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