Homework Progress
15/40 Marks
Enlarge the line by scale factor -3, with point (9, 9) as the centre of enlargement.
Mark the ends of your lines with crosses using the cross-drawing tool ().
у
12
11
10
9-
8-
7-
6
5
4-
3-
2
1-
O
34%
→X
1 2 3 4 5 6 7 8 9 10 11 12

Answer:

26

Step-by-step explanation:

The number that has a greatest common factor of 2 and is greater than 18 and less than 30 is 26.

a) To find the company's revenue and costs if it sells 2000 shirts, we can substitute 2000 for x in the given revenue and cost functions:

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

Revenue: r(x) = 10x, so r(2000) = 10(2000) = $20,000

Costs: c(x) = 3x + 9000, so c(2000) = 3(2000) + 9000 = $15,000

b) The profit function, p(x), is the difference between the revenue function and the cost function. So, the profit function for this company is:

p(x) = r(x) - c(x) = 10x - (3x + 9000) = 7x - 9000

c) To find the company's profit in 2012, when it sold 5000 shirts, we substitute 5000 for x in the profit function:

p(5000) = 7(5000) - 9000 = $20,000

So, the company had a profit of $20,000 in 2012 when it sold 5000 shirts.

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In a system of equations, a solution is a set of values for the variables that make all of the equations in the system true.

For example, consider the system of equations:

3x + 2y = 6

4x - y = 5

A solution to this system would be a set of values for x and y that, when substituted into both equations, make the left side equal the right side. So, for example, one solution could be x = 1, y = 1. If we substitute these values into the equations, we get:

3(1) + 2(1) = 6 and 4(1) - (1) = 5, which is true.

A system of equations can have one unique solution, infinitely many solutions, or no solution.

A system of equations has one unique solution when there is one specific set of values that makes all equations true.

A system of equations has infinitely many solutions when there are infinitely many sets of values that make all equations true. This means that there is a family of solutions, represented by a line or a plane in the case of systems of 2 or 3 equations with 2 or 3 variables.

A system of equations has no solution when there are no values that can be assigned to the variables that make all equations true. This means that the equations are inconsistent.

It's worth noting that a system of equations can be represented in different ways. The solution is the same but the way of finding the solution can change depending on the representation of the system.

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The square root of negative x undefined is undefined for the set of Real numbers.

We know that the square root of a number is nothing but the factor/value that we can multiply by itself to get that number.

Finding a square root of number is an inverse method of squaring a number.

A radical symbol '√' used to represent the square root of number.

If m is the square root of n, then it is represented as m = [tex]\sqrt{n}[/tex],

We can write above relation as, m² = n

We know that square of any real number is positive.

For example, 3² = (3 × 3) = 9

(-3)² = (-3) × (-3) = 9

i.e., the square root of 9 is 3 and -3

Thus the square root of number is not defined for negative real number.

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The complete question is:

Why is the square root of negative x undefined?.

A triangle having two equal sides and angles is known as an isosceles triangle. Its equal sides are 6 cm long and make a 75o angle with one another.

A triangle having two equal sides and angles is known as an isosceles triangle. The procedures listed below can be used to build an isosceles triangle with a length of 6 cm and an angle of 75o between the two equal sides:

1. Mark the midway of each of the two 6 cm-long equal lines.

2. Draw a line between the two mid points to create the triangle's base.

3. Beginning at one of the base line's ends, use a compass to draw a 75-degree arc.

4. Create a new arc of Starting from the other end of the base line, measure 75o with a compass.

5. The third corner of the triangle will be formed by the intersection of these arcs.

6. To finish the triangle, connect its three corners with straight lines.

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Their age now are 13 years old for Jerry and 18 years old for Tom.

As per data given, Tom age now = 5 + Jerry age now. After time = 2 year, Tom age : Jerry age = 4 : 3. We can determine their age now by substitute methods as follow:

After 2 years = Tom age  : Jerry age = 4 : 3

Tom age now + 2 : Jerry age + 2 = 4 : 3

Substitute Tom age now to jerry age now from first formula, so:

Tom age now + 2 : Jerry age now + 2 = 4 : 3

5 + Jerry age now + 2 : Jerry age now + 2 = 4 : 3

3 ( 5 + Jerry age now + 2)  = 4 (Jerry age now + 2)

21 + 3 Jerry age now = 4 Jerry age now + 8

Jerry age now = 21 - 8

Jerry age now = 13 years old

Find the tom age from first formula

Tom age now = 5 + Jerry age now

Tom age now = 5 + 13

Tom age now = 18 years old

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Answer:

1 d.p to c 7m

Step-by-step explanation:

you should use phythagoras theorem to caculate the leght of BF ang that is my answer

The answers to each part is below..

Given is a graph as shown in the image.

Therefore, the answers to each part is given above.

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Using trigonometric identities to simplify the expression, we have sec²(π/2 - x) (sin²(x)-sin⁴(x)) = cos²x

Trigonometric identities are equations that contain the trigonometric ratios.

Since we have the trigonometric expression sec²(π/2 - x) (sin²(x)-sin⁴(x))

We desire to simplify it as follows.

sec²(π/2 - x) (sin²(x)-sin⁴(x))

Using the trigonometric identity sec²(π/2 - x) = 1/cos²(π/2 - x), we have that

sec²(π/2 - x) (sin²(x)-sin⁴(x)) = 1/cos²(π/2 - x) × (sin²(x)-sin⁴(x))

Also, using the fact that cos²(π/2 - x) = sinx, we have that

1/cos²(π/2 - x) × (sin²(x)-sin⁴(x)) = (sin²(x) - sin⁴(x))/sin²x

Factorizing out sin²x, we have that

(sin²(x) - sin⁴(x))/sin²x = (sin²(x)(1 - sin²(x))/sin²x

= 1 - sin²x

= cos²x

So, sec²(π/2 - x) (sin²(x)-sin⁴(x)) = cos²x

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The graph of f(x) = 2x + 3 is a linear function and its y-intercept is y = 2x + 3.

Any function is referred to as linear if it represents a straight line on the coordinate plane. For instance, the linear function represented by the equation y = 3x – 2 looks like a straight line on a coordinate plane. Due to the fact that f(x) can substitute for y, this function can be written as f(x) = 3x - 2.

First find the slope of the line

y - y₁ = m(x - x₁)

0 - 3 = m(-1.5 - 0)

m = 2

From the graph, we can take any of the two points i.e.(0, 3) and put it in slope formula

y - y₁ = m(x - x₁)

So,

y - 3 = 2(x - 0)

y = 2x + 3 (y-intercept)

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Full question:

Graph each function determine which of the functions are linear. find the y-intercept of each function and the slope.

f(x) = 2x + 3

In linear equation, $33.93 would her total in dollars and cents be, after the discount and before tax, if the total cost of all the items she wants to buy is $39.

What in mathematics is a linear equation?

A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept. Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables. Equations with variables of power 1 are referred to be linear equations. One example with only one variable is where ax+b = 0, where a and b are real values and x is the variable.

Item she wants to buy is priced at $39

After the discount, and before tax, the price is $33.93.

39.00 x .13 = 5.07

39.00 - 5.07 = $33.93

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The length of TW is given as follows:

TW = 17.4 units.

The length TW is the hypotenuse of a right triangle of sides WU and UT.

The Pythagorean Theorem states that for a right triangle, the length of the hypotenuse squared is equals to the sum of the squared lengths of the sides of the triangle.

The side lengths are given as follows:

Hence the length TW is obtained as follows:

(TW)² = 12.6² + 12²

[tex]TW = \sqrt{12.6^2 + 12^2}[/tex]

TW = 17.4 units.

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When you substitute a number for each variable and simplify it is called a Substitution method.

I will demonstrate how the substitution method works. Suppose we have the following systems of linear equations with two variables:

Equation 1:  3x + 2y = 11

Equation 2:  -x + y = 3

By solving these two equations we get x=1 and y=4.

The substitution method is a quick and easy way to algebraically solve a set of linear equations and determine the variables' solutions. According to what the name implies, this method entails determining the value of the x-variable in terms of the y-variable from the first equation and then substituting or replacing the value of the x-variable in the second equation. We can solve and determine the value of the y-variable in this method. Finally, we may use any of the above equations to obtain x by substituting the value of y. This procedure can also be switched around so that we first solve for x before solving for y.

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Product rule example is f(x) = (3x - 2x2)(5 + 4x).

Following the Product rule we have

f ' (x) = (3x - 2x2)(0 + 4) + (5 + 4x) (3 - 4x)

       = 12x - 8x2 + 15 + 12x - 20x - 16x2

       = - 24x2 +4x + 15

Simply put, a product is the outcome of multiplying two functions. This rule, which was developed by Gottfried Leibniz, enables us to compute derivatives that we don't want (or are unable to) multiply quickly. In other words, by combining our understanding of the power rule with the sum and difference rule for derivatives, we can use the product rule to obtain the derivative of two differentiable functions that are being multiplied together.

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When there is no solution to a system called an inconsistent system of equations.

A linear equation in two variables is in the form ax + by + c = 0 where a, b, c ∈ R, a, and b ≠ 0. An inconsistent pair of linear equations is named a linear equation system with no solution. When we think of a system of linear equations, we are able to compare the coefficients of the equations and find whether it is a system of equations with no solution.

Assume the pair of linear equations in two variables, x and y.

a₁x + b₁y + c₁ = 0

a₂x + b₂y + c₂ = 0

Where a₁, b₁, c₁, a₂, b₂, c₂ stand real numbers.

Note that, a₁² + b₁² ≠ 0, a₂² + b₂² ≠ 0

If (a₁/a₂) = (b₁/b₂) ≠ (c₁/c₂), then there will be no solution.

--The given question is incorrect; the correct question is

"When there is no solution of a system called _____ system of equations."--

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Answer: 6

Step-by-step explanation:

When solving this problem, it is important to remember the rules for when we add a negative and subtract a negative. When we add a negative (+ -), we are essentially going to keep the sign attached to the number. In this case, we would still subtract. When subtracting a negative (- -), the signs cancel out, so will add the number instead. With that in mind, we can rewrite the equation and solve it as follows:

13 - 12 + 5

1 + 5

6

Hope this helps!

The value of cos 5pi/12 is found to be 0.2588.

The given trigonometric ratio is-

= cos (5π/12)

The value of π in degrees is 180, substitute it.

= cos (5*180/12)

= cos (900/12)

= cos (75)

Using calculator

≈ 0.2588

Thus, the value of cos 5pi/12 is found to be 0.2588.

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Answer:

A to B:  Scale of 3, and (10,6)

B to A:  Scale of (1/3) and (10,6)

Step-by-step explanation:

See attached worksheet.

By trigonometric formulas and algebra properties, the trigonometric equation [cos² (90° + β) · sin(90° - β)] / [cos (360° + β) · sin (360° - β) · cos (180° - β)] is equivalent to - 2.

In this question we find a trigonometric equation, that is, an equation involving trigonometric functions, that must be simplified by trigonometric formulas and algebra properties. First, write the entire trigonometric formulas:

[cos² (90° + β) · sin(90° - β)] / [cos (360° + β) · sin (360° - β) · cos (180° - β)]

Second, eliminate the cosine squared of the equation by trigonometric formula:

[[1 + cos (180° + 2 · β)] · sin(90° - β)] / [cos (360° + β) · sin (360° - β) · sin (180° - β)]

[sin (90° - β) + cos (180° + 2 · β) · sin(90° - β)] / [cos (360° + β) · sin (360° - β) · sin (180° - β)]

Third, simplify the trigonometric functions for angle additions and subtractions:

[sin (90° - β) + cos (180° + 2 · β) · sin(90° - β)] / [cos (360° + β) · sin (360° - β) · cos (180° - β)]

[cos β - cos 2β · cos β] / [cos β · sin (- β) · sin β]

- (cos β - cos 2β · cos β) / (cos β · sin β · sin β)

Fourth, simplify the expression by algebra properties:

- (1 - cos 2β) / sin² β

(cos 2β - 1) / sin² β

Fifth, eliminate the double angle by trigonometric formulas:

(cos² β - sin² β - sin² β - cos² β) / sin² β

Sixth, simplify the expression by algebra properties:

- 2 · sin² β / sin ² β

- 2 · 1

- 2

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Answer:

Look at my image:

Left 4, down 2

The probability of at least two people bringing the same item is 0.19.

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true.

Given that, The organizer of a potluck dinner sends 6 people a list of 10 different recipes and asks each person to bring one of the items on the list.

The probability of two people bringing the same item can be calculated using the formula P(A∩B) = P(A) × P(B).

In this case, P(A) and P(B) are both 1/10, because each person has the same chance of choosing any one of the 10 items on the list.

Therefore, the probability of two people bringing the same item is 1/100. To calculate the probability of at least two people bringing the same item, we can use the formula P(A∪B) = P(A) + P(B) - P(A∩B).

In this case, P(A∪B) = 1/10 + 1/10 - 1/100 = 0.19.

Hence, the probability of at least two people bringing the same item is 0.19.

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The four parts of a quadrant are upper right, upper left, lower right, lower left.

The upper right quadrant of the coordinate plane, sometimes known as quadrant 1, has only positive coordinates (QI). Quadrant two is the upper left-fourth of the coordinate plane (QII). Quadrant three is at the bottom left (QIII). Located in the bottom right corner is quadrant number four (QIV). In quadrant I, the x- and y-coordinates are both positive. In quadrant II, the x-coordinate is negative while the y-coordinate is positive. In quadrant III, the x- and y-coordinates are positive. In quadrant IV, the x-coordinate is positive while the y-coordinate is negative. The area enclosed by the x and y axes is referred to as a quadrant in a coordinate system. The quadrants are formed by the 90-degree intersection of the x- and y-axes.

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Answer:

10.25x+17y ≥ 50

Step-by-step explanation:

10.25x is how much shirts you can buy

17y is how much pants you can buy

50 is the total money you can spend

HOPE THIS HELPED!

The inequality that represents the situation is 10.25x + 17y ≤ 50.

In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to each other. To solve the inequality, you may multiply or divide each side by the same positive number, add the same amount to each side, take the same amount away from each side, and more. You must flip the inequality sign if you multiply or divide either side by a negative number.

Given:

You go to a store to buy clothes.

The shirt cost 10.25$ each and the pants cost $17 each.

Let x equal the number of shirts and y equal the number of pants you buy. you can only spend up to $50 at the store.

That means,

10.25x + 17y ≤ 50

Therefore, the inequality is 10.25x + 17y ≤ 50.

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O₂ is two moles.

The molecular mass of an element is described as the sum of the masses of all the atoms present in the molecule.

Molecular mass is acquired by adding the atomic masses of all atoms with the number of atoms in the molecule.

O₂ has two atoms, so a mole of O₂ would have 1 mole of O₂ molecules, and when broken down into atoms, 2 moles of atoms.

Think about it like pairs of shoes. If you have 6 pairs of shoes, you have 12 pairs of shoes.

CO₂ has 3 atoms, 2N₂0 has 3 atoms, and there are already 2 moles, so that would be 6 moles of atoms; 2NaCl has 2 atoms but again, that 2 indicates that you'd have 4 moles of atoms, and H₂SO₄ has 7 atoms.

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Using the distributive property we will find the equivalent expression:

8*(a + 4) = 8a + 32

Remember that the distributive property for the multiplication says that:

A*(B + C) = A*B + A*C

So we distributed the product along the addition.

Here we want to rewrite the expression:

8*(a + 4)

Using the distrubitive property, we can rewrite this as:

8*(a + 4) = 8*a + 8*4

              = 8a + 32

That is the equivalent expression.

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Answer: D.

x^2/8 + (y-2)^2/4 = 1

Step-by-step explanation:

Hope this helps.

Function f(14) = 11 shows that the outcome of a function at x = 14 the value of the function is 11.

Function is a mathematical phrase, rule, or law that establishes the link between an independent variable and a dependent variable (the dependent variable). In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences. The German mathematician Peter Dirichlet initially offered the contemporary definition of function in 1837:

To specify what the function f (14) = 11 means.

Here,

f( 14 ) = 11

f( 14 ) = f( x )

x = 14

f( x ) = 11

Implies that,

f(x) = y is function, when x = 14 the function gives y = 11 ,,means that for x = 14 the outcome of the function is 14.

Therefore, function f(14) = 11 implies that the outcome of a function at x = 14 the value of the function is 11.

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The number of necklaces at the break-even point will be 10.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

Kurt is beginning a business selling high-quality neckbands. He has chosen to contribute an underlying measure of $20 for publicizing, and materials cost $7 for every accessory he makes. Kurt can sell his manifestations for $9 per piece of jewelry.

Let 'x' be the number of necklaces. Then the equations are given as,

Cost = 7x + 20

Sell = 9x

The number of necklaces at the break-even point is calculated as,

Sell = Cost

9x = 7x + 20

2x = 20

x = 10

The number of necklaces at the break-even point will be 10.

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60° triangle can be calculated in radians as π/3 radians.

60 degree angle is an acute angle in geometry and is expressed as π/3 in radians. Each angle in an equilateral triangle is equal to 60 degrees.

A 60-degree angle is an acute angle since angles less than 90 degrees are considered acute. In the case of a geometric angle, the arc is confined by the sides and is centered at the vertex. When rotated, the arc is centered in the center of rotation and is limited to any other point and its image.

Thus, 60° triangle can be calculated in radians as π/3 radians.

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An equation in slope-intercept form that models this situation :

y = 5x + 3

An equation is a formula in mathematics that expresses equality by connecting two expressions with the equal sign =.

In algebra, an equation is defined as a formula that states that two formulas are equal.

For instance, 3x + 5 = 14 is an equation in which the terms 3x + 5 and 14 are separated by an equal sign.

A mathematical expression used to express the relationship between two terms on opposite sides of a letter.

Like a symbol, there is usually only one variable.

For instance, 2x4 = 2.

A mathematical statement consisting of two expressions joined by an equal sign is known as an equation.

3x - 5 = 16 is an example of an equation.

Solving this equation yields x=7 as the value of the variable x.

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