maya earns £3672 each month before tax is taken out . this amount is then split into three parts:She doesnt pay tax on £972 of it. she pays 20% tax on £2665 of it. she pays 40% tax on the rest of it. How much of mayas monthly earnings are left after tax has been taken out? please help

Answer:

The solution is B. (6x+8y)(6x-8y)

Step-by-step explanation:

(6x+8y)(6x-8y)

= 36x²-48xy+48xy-64y²

= 36x²-64y²

Or, we can use the formula (a-b)(a+b) = a²-b²

(6x+8y)(6x-8y)

= (6x)²-(8y)²

= 36x²-64y²

So, the answer is B

The solution of the expression 36x² - 64y² will be (6x - 8y)(6x + 8y).

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that the expression is 36x² - 64y². The expression will be solved as below,

E = 36x² - 64y²

E = (6x)² - (8y)²

E = ( 6x + 8y )( 6x - 8y)

The solution of the expression is E = ( 6x + 8y )( 6x - 8y).

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The evaluation of the expression is 1198.4.

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.

Given;

Expression;  52 × (7.2 + 16) − 8

Now,

=52*23.2-8

=1206.4-8

=1198.4

Therefore, the algebra will give 1198.4.

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The final solution to the given simultaneous equation is (0, -6)

A finite set of equations for which common solutions are sought is referred to as a set of simultaneous equations, often known as a system of equations or an equation system.

Given the set of equations below:

y = -x-6

x + 3y = -18

Using the substitution method;

Substitute equation 1 into 2 to have:

x + 3(-x - 6) = -18
x - 3x - 18  =-18
-2x = 0

x = 0

Since y = -x- 6

y = -0 - 6

y = -6

Hence the solution to the system of equation is (0, -6)

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Answer:

x > 50

Step-by-step explanation:

[tex]\frac{x}{10}[/tex] > 5 ( multiply both sides by 10 to clear the fraction )

x > 50

Los intervalos numéricos en la recta numérica para x=2, en donde x ∈R y x>2 y x<7, son: (2, 7).

En la recta numérica, los intervalos se definen utilizando dos números, uno inferior y uno superior. Por ejemplo, el intervalo (2, 7) representa todos los números entre 2 y 7, incluyéndolos. Esto significa que el intervalo (2, 7) incluiría 2, 3, 4, 5, 6 y 7. Además, los intervalos numéricos pueden incluir o excluir los números de los extremos. Por ejemplo, el intervalo (2, 7) representa todos los números entre 2 y 7, incluyéndolos, mientras que el intervalo (2, 7] sólo incluiría 3, 4, 5, 6 y 7.

The number intervals on the number line for x=2, where x ∈R and x>2 and x<7, are: (2, 7).

On the number line, intervals are defined using two numbers, one lower and one upper. For example, the interval (2, 7) represents all numbers between 2 and 7, including them. This means that the interval (2, 7) would include 2, 3, 4, 5, 6 and 7. In addition, numerical intervals can include or exclude the numbers at the ends. For example, the interval (2, 7) represents all numbers between 2 and 7, including them, while the interval (2, 7] would only include 3, 4, 5, 5, 6 and 7.

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The definition of the f, h, and g functions, indicates the possible damains, range and composite functions are as follows;

(a) The domain of f is the set of real numbers except x = 5

The range is the set of all real numbers except f(x) = 0

(b) (f○g)(x) = 1/(3·x + 1)

(f○h)(x) = 1/(cos(x + 1) - 5)

(g○f)(x) = (6·x - 27)/(x - 5)

(c) g⁻¹(x) = (x - 6)/3

(d) The domain is; x ∈ R, and x ≠ 5

The domain of a function is the set of the possible input values of the function.

The specified functions are;

f(x) = 1/(x - 5), g(x) = 3·x + 6, h(x) = cos(x + 1)

(a) The domain of f is the set of numbers such that the rational polynomial, 1/(x - 5) is defined

The polynomial, f(x) = 1/(x - 5) is defined when x - 5 ≠ 0, therefore;

x - 5 + 5 ≠ 0 + 5 = 5

x - 0 ≠ 5

x ≠ 5

The polynomial, f(x) = 1/(x - 5) is difined where x ≠ 5

The domain is the set of all real numbers, such that x ≠ 5

The range of the function, is the set of the possible output values, such that as (x - 5) ≠ 0, f(x) ≠ 0

The range is therefore; -∞ < f(x) < ∞, f(x) ≠ 0

(b) The composite functions (f○g)(x) = f(g(x))

Therefore; (f○g)(x) = f(g(x)) = f(3·x + 6)

Plugging in x = (3·x + 6) in the function, f(x) = 1/(x - 5), we get;

f(g(x) = 1/((3·x + 6) - 5) = 1/(3·x + 1)

f(g(x) = 1/(3·x + 1)

(f○h)(x) = f(h(x))

h(x) = cos(x + 1), therefore; (f○h)(x) = f(cos(x + 1))

Plugging in x = cos(x + 1) in f(x) = 1/(x - 5), we get;

(f○h)(x) = f(cos(x + 1)) = 1/((cos(x + 1)) - 5)

(g○f)(x) = g(f(x))

g(f(x)) = g(1/(x - 5)) = 3/(x - 5) + 6 = (6·x - 27)/(x - 5)

(c) g⁻¹(x)

g⁻¹(x) is the inverse of the function, g(x), which can be foiund as follows;

Plugging in; y = g(x) = 3·x + 6

y = 3·x + 6

y - 6  = 3·x

x = (y - 6)/3

Therefore;

(d) (f + g)(x) = f(x) + g(x)

f(x) + g(x) = 1/(x - 5) + 3·x + 6

The use of a graphing calculator indicates that we get;

1/(x - 5) + 3·x + 6 = (3·x² - 9·x - 29)/(x - 5)

Therefore; (f + g)(x) = (3·x² - 9·x - 29)/(x - 5)

The domain is therefore, the possible values of x at which the denominator is not zero, that is x ≠ 5

The domain is the set real numbers except x = 5, which is; x ∈ R, x ≠ 5

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Based on the information provided, it can be concluded the sum is $11,000.

To know what is the sum, let's calculate the difference in the interest rate:

13% - 12% = 1%

This means the difference between the two interest rates presented is 1%. Based on this, let's calculate the 1% of the sums given:

Based on the above, the correct sum is $11,000 because only in this one 1%  is equivalent to $110.

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The trigonometric ratio for sin Z is 3/5 in the given right triangle.

Trigonometric functions are defined as the functions which show the relationship between the angle and sides of a right-angled triangle.

The right triangle is given in the question, as shown.

As we know the cosine ratio, is as follows:

cos Z = base/hypotenuse

cos Z = YZ/XZ

cos Z = 32/40

cos Z = 4/5

Now, as we know the sine ratio, is as follows:

sin Z = √(1 - cos² Z)

sin Z = √(1 - (4/5)²)

sin Z = √(1 - 16/25)

sin Z = √(9/25)

sin Z = 3/5

Thus, the trigonometric ratio for sin Z is 3/5.

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By AA similarity Triangle ABC and DEF are similar.

Two triangles are similar if they have the same ratio of corresponding sides and equal pair of corresponding angles. Similar figures are described as items with the same shape but varying sizes, such as two or more figures.

Given:

First in Triangle ABC

using Angle Sum Property

<C= 180 - <A - <B

<C = 180 - 77 - 48

<C = 55 degree

and, In Triangle DEF

using Angle Sum Property

ND= 180- <E- <F

<D = 180- 55 - 48

<D = 77

As, In both Triangle ABC and DEF all angles triangles are Equal.

<A = <D= 77

<B = <E = 48

<C = <F= 55

So, by AA similarity Triangle  ABC and DEF are similar.

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Answer:

-x + y = 2

Step-by-step explanation:

Graphing a shape means all the points in the shape will give you a true answer when you put the x and y back in the equation used to graph that shape.

Let's pick a point (0,2)

x = 1

0 = 1

This is not true, so the first option is wrong.

-x + y = 2

0 + 2 = 2

2 = 2

The second option is true.

x - y = 2

0 - 2 = 2

-2 = 2

This is not true, so the thrid option is wrong.

2x + y = 3

2(0) + 2 = 3

2 = 3

This is no true, so the fourth option is wrong.

The value of the equation is  A = 81

The power to which a number must be increased in order to obtain another number is known as the logarithm. A power is the opposite of a logarithm. In other words, if we subtract an exponentiation from a number by taking its logarithm

The properties of Logarithm are :

log A + log B = log AB

log A − log B = log A/B

log Aⁿ = n log A

Given data ,

Let the logarithmic equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

A = 4 ^ ( log₂ ( 9 ) )   be equation (1)

On simplifying the equation , we get

log₂ ( 9 ) = 2 log₂ ( 3 )

So , on further simplification , we get

A = 2² ^ ( 2 log₂ ( 3 ) )

A = ( 2⁴ )^log₂ ( 3 )

From the logarithmic rule , a^logₐ ( b ) = b

Substituting the values in the equation , we get

A = 2 ^ ( log₂(3) )4

A = 3⁴

A = 81

Hence , the equation is A = 81

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Answer:

201 eighth graders and 201 + 54 = 255 seventh graders at the middle school.

Step-by-step explanation:

The system of equations representing the situation is:

x + 54 = 456 - x

2x + 54 = 456

2x = 402

x = 201

where x represents the number of eighth graders. So, there are 201 eighth graders and 201 + 54 = 255 seventh graders at the middle school.

So Reena has ran a distance of 5 kilometers while only covering one-sixth of the distance.

In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign. A mathematical phrase with two equal sides separated by an equal sign is called an equation. An example of an equation is 4 + 6 = 10.

Here,

If Reena has completed one sixth of the 30 km run,

30 km / 6 = 5 km.

So, Reena has run a distance of 5 km so far when she had run one sixth of the distance.

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The area of quadrilateral EFGH is closest to 29 square units.

The area of a shape simply means the total space that is taken by the shape. It simply expresses the extent of the region on a particular plane as well as a curved surface.

Based on the values or the sides, and the slopes given, the area will be:

= 1 + 4 + 8 + 8 + 2 + 4 + 2

= 29 units.

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The diagonals of the parallelogram intersect at the center. Then the value of the variable 'x' is 38.

It is a polygon with four sides. The total interior angle is 360 degrees. A parallelogram's opposite sides are parallel and equal. Its diagonals intersect in the center.

Given parallelogram A B C D below, DE = 31 If EB = x - 7.

By the definition, then the equation is given as,

EB = DE

x - 7 = 31

Simplify the equation, then we have

x - 7 = 31

x = 31 + 7

x = 38

The value of the variable 'x' is 38.

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Answer:

density of apple juice

1.034-1.051g.cm‐³

Answer:

-4x + 5g

Step-by-step explanation:

4x + 7g - 2g - 8x

Combine the variable g with variable g and variable x with variable x

-4x + 5g

P should stand for the population in a certain year. P = 97*(0.875) is the function to model the population change (year-2021).

P should stand for the population in a certain year. To simulate how the animal population changes over time, we can utilise a function. The 12.5% annual reduction rate will be considered by the function. This can be stated mathematically as P = 97*(0.875), which is how it will appear in the equation (year-2021). In this equation, the number 97 stands in for the population in 2021, and the number 0.875 denotes the 12.5% annual decline rate. The exponent (year 2021) represents the number of years that have passed since 2021, allowing the equation to take the population decline over a number of years into consideration. As a result, the equation can be used to determine the animal species' population at the start of a particular year.

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The minimum number of rotations required for a 3500 km race is 52,800 rotations.

This is calculated by dividing the total distance of the race, 3500 km, by the circumference of the wheel, which is 2πr, where r is the radius of the wheel. The radius of the wheel must be between 27.5 cm (half of 55 cm) and 37.5 cm (half of 75 cm). So, the minimum number of rotations is given by 3500/(23.14r), where r is the minimum radius of the wheel. Substituting in r = 27.5 cm, we get the minimum number of rotations required for a 3500 km race as 52,800.

To arrive at this result, we must first calculate the circumference of the wheel, which is given by 2πr, where r is the radius of the wheel. Since the diameter of the wheel must be between 55 cm and 75 cm, the radius of the wheel must be between 27.5 cm (half of 55 cm) and 37.5 cm (half of 75 cm).

We then divide the total distance of the race, 3500 km, by the circumference of the wheel, which is given by 2πr. Substituting in the minimum radius of the wheel, 27.5 cm, we get the minimum number of rotations required for a 3500 km race as 52,800.

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Answer: 3x + 7

Step-by-step explanation: ??? I think you mean 3x + 7, yes? If I'm mistaken, please correct me :)))))

The base of the ladder must be placed 3 ft from the base of the building. The total length of the ladder is 15 ft.

1. The ladder must reach 12 ft up the wall, so we need to calculate the distance from the base of the building to 12 ft.

2. The total length of the ladder is 15 ft.

3. Subtract the length of the ladder (15 ft) fromthe desired height (12 ft) to get the distance from the base of the building.

4. 12 ft - 15 ft = -3 ft

5. Since the distance cannot be negative, the base of the ladder must be placed 3 ft away from the base of the building.

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Given that x, y, z are different and satisfy the equations:

x^3 + x^2 - x = 0

y^3 + y^2 - y = 0

z^3 + z^2 - z = 0

We can multiply the first equation by y, the second by z, and the third by x to obtain:

x^3y + x^2y - xy = 0

y^3z + y^2z - yz = 0

z^3x + z^2x - zx = 0

Adding these three equations together, we get:

x^3y + x^2y - xy + y^3z + y^2z - yz + z^3x + z^2x - zx = 0

Expanding and simplifying, we find that:

x^2y + xy^2 + y^2z + yz^2 + z^2x + zx^2 - xy - yz - zx = 0

Now, we use the fact that x, y, and z are roots of the equations given above to simplify the expression further:

x^2 - x + y^2 - y + z^2 - z = 0

We can also write this as:

(x - 1)(x + 1) + (y - 1)(y + 1) + (z - 1)(z + 1) = 0

This expression can be factorized as:

(x - 1)(x + 1)(y - 1)(y + 1)(z - 1)(z + 1) = 0

Since x, y, and z are all different, we have that:

(x - 1)(x + 1) ≠ 0

(y - 1)(y + 1) ≠ 0

(z - 1)(z + 1) ≠ 0

Therefore, we have:

(x - 1)(x + 1)(y - 1)(y + 1)(z - 1)(z + 1) = (x - 1)(x + 1)(y - 1)(y + 1)(z - 1)(z + 1) = 0

So, we can conclude that:

xyz = -1

And,

1 + xyz = 0

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Answer:

the answer is 60990

Step-by-step explanation:

114×535

=60990

In the triangles ABC and ADC the measure of ∠DAC = 25° and the length of AB is 12 cm.

What are triangles?

Triangles are a particular sort of polygon in geometry that have three sides and three vertices. Three straight sides make up the two-dimensional figure shown here. An example of a 3-sided polygon is a triangle. The total of a triangle's three angles equals 180 degrees. One plane completely encloses the triangle.

The triangle ABC and ADC follow the AAS theorem.

Here ∠C = ∠C, ∠A = ∠A and CD = CB

The line segment AC is the bisection of angle A, hence -

The missing angle is ∠A = ∠A.

Therefore, the missing angle measure is of 25°.

The missing side length is AB = AD.

Therefore, the missing side length is of 12 cm.

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Numbers that summarize a sample of data are called "sample statistics," and numbers that summarize populations are called "population parameters."

A sample statistic is a single value that describes a characteristic of a sample, such as the mean, median, or standard deviation. Sample statistics are used to make inferences about the population from which the sample was drawn.

A population parameter, on the other hand, is a single value that describes a characteristic of an entire population, such as the population mean, population standard deviation, or population proportion. Population parameters are usually not known and must be estimated from a sample.

For example, if you have a sample of 100 students' heights, the mean height of the sample (a sample statistic) can be calculated and used to make inferences about the mean height of the population of all students.

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Answer:

Moore's Law states that the number of transistors on a microchip will double approximately every two years. So, if a microchip in a given year could hold 922,200 transistors, 19 years later, it could hold approximately 922,200 * 2^(19/2) = 922,200 * 2^9.5 = 922,200 * 15,564,224 = 14,225,067,008,000 transistors.

Answer:

  4% and 8%

Step-by-step explanation:

You want to know the interest rates that yield $168 on investments of $2200 at one rate and $1000 at a rate 4% higher.

Let r represent the lower interest rate. Then x+0.04 is the higher rate, and the total interest earned is ...

  2200r +1000(r +0.04) = 168

Simplifying the equation, we have ...

  3200r +40 = 168

  3200r = 128 . . . . . . . . subtract 40

  r = 128/3200 = 0.04 = 4% . . . . . divide by the coefficient of r

The rates of interest on Lindays's investments were 4% and 8%.

the lunch cost, including tax and tip 67.31$.

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to compute a percentage of a number, we should divide it by its whole and then multiply it by 100. The proportion, therefore, refers to a component per hundred. Per 100 is what the term percent signifies. The letter "%" stands for it.

Given, the Patterson family went to eat lunch at a new restaurant. They spent $52.30 on their meal. The restaurant will add a 7 1/4% tax to the cost of the meal.

total cost after the tax = 52.30*(1 + 7 1/4)%

total cost after the tax = 52.30* 7.25/100 + 52.30

total cost after the tax = 3.79 + 52.30

total cost after the tax = 56.09

Since,

Mr Patterson was very happy with the food and service so he gave a 20% tip to the waitress.

Thus,

Total cost after the tip = 56.09(1 +20/100)

Total cost after the tip = 56.09 * 1.2

Total cost after the tip =  67.308

Therefore, the lunch cost, including tax and tip 67.31$.

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The constant of proportionality is, 12

Yes, The graph of equation is a straight line.

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

Mark is planning a birthday party at the local skating rink.

And, The table shows the rates that are charged for parties at the skating rink.

Let two points on table are (5, 60) and (10, 120)

Now, The equation of line is,

⇒ y - 60 = (120 - 60) / (10 - 5) (x - 5)

⇒ y - 60 = 60/5 (x - 5)

⇒ y - 60 = 12(x - 5)

⇒ y - 60 = 12x - 60

⇒ y = 12x

Thus, The number of guests proportional to the cost.

And, Constant of proportionality = 12

And, The graph of y = 12x is a straight line.

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Complete question is shown in figure.