Pleas help if possible :)

The only true statement among the options given is C, The total cost of your books depends on how many books you buy.

What is the direct proportion?

Direct proportion, also known as direct variation, is a relationship between two variables in which the ratio of the variables is always constant. This means that if one variable increases, the other variable will also increase, and if one variable decreases, the other variable will also decrease.

According to the information given, all books are $1.50 each, so the price does not depend on what kind of book you buy. The statement A is false.

Also, the kind of book you buy does not depend on the price, so statement B is false.

The number of books you buy does depend on the total cost, so statement C is true.

Therefore, the only true statement among the options given is C, The total cost of your books depends on how many books you buy.

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Answer: 64 miles per hour

Step-by-step explanation: 192 divided by 3= 64

The linear equation to represent the value of the car in terms of the year will be c = 64000 - 5000y

An equation simply has to do with the statement that illustrates the variables given. In this case, it is vital to note that two or more components are considered in order to be able to describe the scenario.

In this situation, the upfront cost of a Porsche is 64K and at the end of 12 Years, the car is worth only $4000.

The difference in amount will be:

= $64000 - $4000

= $60000

Number of years = 12

Amount in depreciation per year = $60000 / 12

= $5000 per year

The linear equation to represent the value of the car in terms of the year will be:

c = 64000 - 5000y

where c = value

y = number of years

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The second coordinate in a two-dimensional coordinate system is the y-coordinate, which indicates the vertical distance from the origin point (0, 0).

Coordinate is a pair of numbers used to identify the position of a point in a plane or in space. It is mostly used in mathematics, science, and engineering. Coordinates are used to define locations on maps, to plot graphs, and to identify points on a two-dimensional plane. By knowing the coordinates of two points, one can calculate the distance between them.

The y-coordinate can be either positive, negative, or zero. The y-coordinate is also referred to as the “ordinate” or the “vertical coordinate”. The second coordinate is usually written as the number located at the top of the y-axis on a graph.

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The value of expression 9x for x= 2 is 18.

what are expressions?

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between. The mathematical operators can be of addition, subtraction, multiplication, or division. For example, x + y is an expression, where x and y are terms having an addition operator in between. In math, there are two types of expressions, numerical expressions - that contain only numbers; and algebraic expressions- that contain both numbers and variables.

e.g. A number is 6 more than half the other number, and the other number is x. This statement is written as x/2 + 6 in a mathematical expression. Mathematical expressions are used to solve complicated puzzles.

Now,

Given expression = 9x

For x=2

Value of expression=9*2

=18

Hence,

          After evaluating 9x for x=2 value will be 18.

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Answer:

Step-by-step explanation:

Isosceles triangle (Same angle) means both sides are the same length, triangle is also right meaning you can plug values into Pythagorean theorem ([tex]a^2 + b^2 = c^2[/tex])

[tex]x^2+x^2 = 1^2\\2x^2=1\\x = \sqrt{\frac{1}{2} }\\x = 0.707...\\x=0.7[/tex]

Assuming all my math is right, this is your answer

Answer:x=35/2 or 17.5

Step-by-step explanation:

x + .2x = 21

1.2x = 21

1.2x/1.2 = 21/1.2

x = 17.5

answer a i just did it

Step-by-step explanation:

Every coordinate point of the original triangle has its scale factor doubled by one-half if the scale factor is one. multiply by half after dilation with a scale factor of two.

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Every coordinate point of the original triangle has its scale factor doubled by one-half if the scale factor is one. multiply by half after dilation with a scale factor of two.

We locate the dilation's center point and measure the distances between it and other points on the preimage and the image in order to get the scale factor for the dilation. As correctly stated by Math Bits Notebook, the scale factor is determined by the ratio of these distances.

Keep in mind that each coordinate must be multiplied by the scale factor in order to enlarge an object in the coordinate plane. The mapping will be (x, y) (1.5 x, 1.5 y) with this dilation. The original is represented by the blue quadrilateral in the graph above, while the dilatation is shown by the red picture. Connect the image's vertices to the center of dilation by drawing straight lines.

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The shifted coordinates for each of the following are (20,-11) and (6,2).

Coordinates are a pair of integers (Cartesian coordinates), or sporadically a letter and a number, that identify a certain place on a grid, also referred to as a coordinate plane. The x axis (horizontal) and y axis are the two axes that make up a coordinate plane (vertical).

Given, (x,y) → (x + 10, y - 6)

a)  when the input is (10,-5) -

10 + 10 = 20

- 5 - 6 = - 11

(20,-11)

b) when the input is (-4,8) -

-4 + 10 = 6

8 - 6 = 2

(6,2)

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The cost price of large pizza is $12 and that of toppings is 0.75.

An equation is a mathematical statement with an 'equal to' symbol between two expressions that have equal values. For example, 3x + 5 = 15. There are different types of equations like linear, quadratic, cubic, etc.

In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

Let the cost of large pizza be x and that of toppings be y.

x + 2y = 13.50

x = 13.50 - 2y    - (1)

x + 5y = 15.75   - (2)

substitute equation (1) in equation (2),

13.50 - 2y + 5y = 15.75

3y = 15.75 - 13.50

3y = 2.25

y = 2.25 / 3

y = 0.75

now, put the value of y = 0.75 in equation (1),

x = 13.50 - 2 × 0.75

x = 13.50 - 1.5

x = 12

Therefore, the cost price of large pizza is $12 and that of toppings is 0.75.

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Yes, the mentioned sides of triangle will be right angles triangle because they follow Pythagoras theorem.

A right angled triangle is characterized by presence of hypotenuse, perpendicular and base. The sides of right angled triangle are related through Pythagoras theorem, which is -

Perpendicular² = Base² + Hypotenuse²

As we know that hypotenuse is the longest side of triangle, hence, will be the 13 cm.

So, keeping the values in formula -

13² = 5² + 12²

Taking square on both the sides of equation

169 = 25 + 144

Performing addition on Right Hand Side of the equation

169 = 169

Since, LHS is equal to RHS, hence, it is right angled triangle.

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Answer:

2/3

Step-by-step explanation:

Choose any of the similar sides and set up the ratio, then reduce to the simplest fraction:

12/18 = 4/6 = 2/3

8/12 = 4/6 = 2/3

10/5 = 2/3

The math word problems with the given words is A has 52 marbles, B has 105 marbles, find the difference between the number of marbles between A and B.

A math word problem is a question that is written as one or more sentences and asks students to use their mathematical understanding to solve an issue from "real world."

1. A has 52 marbles, B has 105 marbles, find the difference between the number of marbles between A and B.

2. The temperature of city A is 35 degrees, on the second day the temperature decreased to 15 degrees. How much did the dropped (temp)?

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The difference between the y coordinates  and the difference between the x coordinates then divide them

Gradient is a differential operator used in mathematics to transform a three-dimensional vector-valued function into a vector whose three elements are the partial derivatives of the function with respect to its three variables. The gradient sign is  ∇

As a result, f = ifx + jfy + kfz, where fx, fy, and fz are the first partial derivatives of f and I j, and k are the unit vectors of the vector space, is the gradient of a function, also known as grad f or f. f is the direction of the heat-flow vector in a temperature field, where f is a temperature field in physics that indicates the temperature at every point in a space.

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The first step in solving the quadratic equation is subtracting 8 from both sides.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 4 = 9 is an equation.

We have,

5x² + 8 = 133

Subtract 8 into both sides.

5x² = 133 - 8

5x² = 125

Divide both sides by 5.

x² = 125/5

x² = 25

x = √25

x = 5

Thus,

The root of the equation is 5.

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The measurement of angle BCD is 30°

A cyclic quadrilateral is a four sided shape that can be inscribed into a circle. Each vertex of the quadrilateral lies on the circumference of the circle and is connected by four chords. The opposite angles of a cyclic quadrilateral have a total of 180°.

Given that, ABDE is a cyclic quadrilateral. ABC and EDC are straight lines. Angle DBC = 60°

According to the figure, BD║ AE

Therefore,

∠ DBC ≅ ∠ EAB (definition of corresponding angles)

∠ EAB = 60°

Since, ∠ EAB : ∠ BCD = 2:1

Therefore, ∠ BCD = 60 × 1/2 = 30°

Hence, the measurement of angle BCD is 30°

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Answer: We can write a system of equations to model this scenario using the information given.

Let x represent the number of children who played minigolf that day, and let y represent the number of adults who played minigolf that day.

The first equation represents the total number of customers, which is the sum of the number of children and the number of adults.

x + y = 320

The second equation represents the total amount of money earned, which is the product of the number of children playing and the cost per child's game plus the product of the number of adults playing and the cost per adult's game.

7x + 10y = 2900

So the system of equations that models this scenario is:

x + y = 320

7x + 10y = 2900

We can use this system of equations to find the number of children and adults who played minigolf that day, given the total number of customers and total amount of money earned. By solving this system of equations we can find the values for x and y.

Step-by-step explanation:

Answer:

Please provide more information. Since you don't provide the original amount of walnuts used, we can't solve the problem.

The amount of money each of them spends on​ the wire will be $23.76 and $35.64, respectively.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

Challenge Emily and Andy to each go to a home improvement shop to purchase wire. The table shows the expense y in dollars for x of the wire they need.

y = kx

9 = 100k

k = 0.09

Then the question is given as,

y = 0.09 · x

Emily needs 22 feet of wire. Then the cost is given as,

y = 0.09 · (22 × 12)

y = $23.76

Andy needs 11 yards of the wire. Then the cost is given as,

y = 0.09 · (11 × 3 × 12)

y = $35.64

The amount of money each of them spends on​ the wire will be $23.76 and $35.64, respectively.

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The complete question is given below.

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is the imaginary unit, which satisfies the equation i2 = -1.

What is complex number?
The number a is the real part of the complex number and b is the imaginary part. A complex number is said to be a sum of a real number and an imaginary number. Complex numbers are used in many branches of mathematics, including calculus, linear algebra, quantum mechanics, and electrical engineering.

They are also used in engineering, physics, chemistry, and other scientific fields. Complex numbers are useful in many real-world applications, such as finding the roots of a polynomial equation or solving systems of linear equations. Complex numbers can also be used to represent points in the plane and can be used to model phenomena in the physical world, such as electrical circuits and waveforms.

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The average cost per passenger - mile of driving is $0.503 per mile.

Average cost is calculated by dividing the total cost by the total output quantity.

There are two options for Daniel and Elizabeth, either by driving car or by plane.

We have to calculate the average cost per passenger - mile of driving in car.

Cost of gas = $60

Food bill for a day for two of them = $25

Food bill for a day for one = 25 / 2 = $12.5

Food bill for one passenger for 4 days = $12.5 × 4 = $50

Cost of room for 1 night = $48

Cost of room for 4 nights = $192

Total cost for 1 passenger = $60 + $50 + $192 = $302

Average cost per passenger - mile of driving = 302 / 600 = $0.503 per mile.

Hence the average cost per mile per passenger is $0.503 per mile.

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So, on solving the question we can say that  equation p= 126-6m ; p = 2 = -124 = -6m => m = 20.6666666667

An equation is a mathematical formula that connects two assertions using the equal sign (=) to denote equivalence. In algebra, an equation is a mathematical statement that establishes the equivalence of two mathematical expressions. For instance, an equal sign separates the components 3x + 5 and 14 in the equation 3x + 5 = 14. A mathematical formula is used to explain the connection between two sentences on either side of a letter. Frequently, there is just one variable, which is also the symbol. for example, 2x - 4 = 2.

the equation is p= 126-6m

p = 2

-124 = -6m

m = 20.6666666667

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Answer:

A- NQ,

B- 24,

C- 14+10=24

Based on the definition of supplementary angles, the measures of the angles are:

Angle x = 122.5°

Angle y = 57.5°

When two angles gives a sum of 180 degrees when they are added together, then the two angles are referred to as supplementary angles.

For example, if angle x and angle y are supplementary angles, it means that:

Measure of angle x + measure of angle y = 180 degrees.'

Given the following:

The measure of angle x = x degrees

The measure of angle y = x - 65 degrees.

Therefore, we have:

x + x - 65 = 180

2x - 65 = 180

2x = 180 + 65

2x = 245

2x/2 = 245/2

x = 122.5

Thus:

Measure of angle x = 122.5°

Measure of angle y = 180 - 122.5 = 57.5°

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Answer:

A

Step-by-step explanation:

Answer:

79%

Step-by-step explanation:

imma human calculator and no one can stop me

Answer:

36

Step-by-step explanation:

4 x 4 = 16

2 x 10 = 20

You would have to separate the square and the rectangle.

The way you do this is by cut of the number and subtracting them, like 6 and 2 to get the square.

The right triangle in marked question number 3 have the value of u = 2 and v = √2 using the trigonometric ratio of sine and cosine of the angle 45°.

The trigonometric ratios involves the relationship of an angle of a right-angled triangle to ratios of two side lengths. Basic trigonometric ratios includes; sine cosine and tangent.

Considering the angle 45° for the right triangle, recall that sin 45° and cos 45° are generally both equal to √2/2

sin 45° = √2/u {opposite/hypotenuse}

√2/2 = √2/u

u = √2/√2 × 2 {cross multiplication}

u = 2

cos 45° = v/u {adjacent/hypotenuse}

√2/2 = v/2

v = 2/2 × √2

v = √2

Therefore, the value of u = 2 and that of n = 10, using the trigonometric ratio of sine and cosine of the angle 45° for the right triangle.

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The base of the triangle 7 can be divided in half by a line of symmetry of the isosceles triangle, which will bisect the vertex angle. This creates two right triangles: Each with a base of 3.5 and a hypotenuse of 5.

What is meant by isosceles triangle?

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The base of triangle 7 can be bisected by the line of symmetry of the isosceles triangle that bisects the apex angle. This creates two right triangles.

Each has a base of 3.5 and a hypotenuse of 5.

A triangle with two equal sides is called an isosceles triangle in geometry.

Both exactly 2 equal sides and at least 2 equal sides are permissible specifications, with the exception of equilateral triangles in the latter version. The bipyramid, the golden triangle, the isosceles right triangle, and the face of the Catalan solid are examples of isosceles triangles.

Isosceles triangles have been studied mathematically since Babylonian and Egyptian times.

Used as an ornament since the dawn of time, isosceles triangles are widely used in architecture and design, including in the construction of pediments and pediments.

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We have plotted the point (2/3) on a number line and attached and explained it below.

A number line is one of the methods of visually representing any point that is a real number on a graduated straight line. This is made by marking graduations on a simple normal line and then marking whatever point we need on it.

The point (2/3) has been given in the problem which we need o plot on the number line. Since this point is a fraction, we need to divide/solve it first and then see where it will fit. On dividing the fraction, we find that the point is 0.66. Now, we find the graduations 0 and 1 since it lies between them. The image for this has been attached below.

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By solving these equations, Cole is currently 27 years old, and Anya is 30 years old.

A person's date of birth is compared to the date on which their age needs to be calculated as part of the age calculation process. The person's age is determined by deducting the person's birthdate from the given date. Age equals Given Date - Birthdate

Let x stand in for Anya's current age and y for Cole's present age.

Cole's older brother, Anya, is three years older. Hence:

x = y + 3

x - y = 3 (1) (1)

The total of their ages will be 79 in 11 years. Hence:

(x + 11) + (y + 11) = 79

x + y = 57 (2) (2)

Equations 1 and 2 are simultaneously solved to produce:

x = 30, y = 27

Cole is currently 27 years old, and Anya is 30 years old.

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