What is the inverse of f(x)=2x+9?

The trigonometric equation is 5sin²x + 3sinx - 1 = 0.

What is a trigonometric equation?

A trigonometric equation is one that incorporates a variable-based trigonometric function. One illustration of a trigonometric equation is sin x + 2 = 1. This equation or one that is more complicated, such as sin2 x - 2 cos x - 2 = 0, can be used in the equations.

Here, we have

Given: (5/2)cos2x - 1/2 = 3sinx

We know that

cos2x = 1 - 2sin²x

Then our equation become

(5/2) (1 - 2sin²x) - 1/2 = 3sinx

5/2 - 5sin²x - 1/2 = 3sinx

2 - 5sin²x = 3sinx

-5sin²x + 2 - 3sinx = 0

5sin²x + 3sinx - 1 = 0

Hence, the trigonometric equation is 5sin²x + 3sinx - 1 = 0.

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The true statements are:-

( 1 ) The square root of a positive number cannot be negative.

( 2 ) √49 = 7 because 7(7) = 49.

( 3 ) √25 = 5 because 5²= 25.

Algebra is one of the many branches of mathematics. Algebra, in broad terms, is the study of mathematical symbols and the rules for manipulating these symbols in formulas; it is a thread that runs through almost all of mathematics.

The right statements are:-

( 1 )The square root of a positive number cannot be negative.

Example, √100 = 10

(2) √49 = √ ( 7 x 7 ) = 7

(3) √25 = √ ( 5 x 5 ) = 5

Hence, the correct statements are options A, D and E.

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Using division and multiplication, the values of the operation are 5/4, 203/6, 1/3 and 32/21 respectively

Division of numbers is the process of breaking down a number into definite proportions of value. In dividing a number, we are reducing it's size by a specific factor. The number to be divided is the dividend. The number by which we divide is the divisor.

In the question given, we have several division operations to carry out.

A) 5/11 ÷ 4/11

Since this are fractions, when we take the inverse of one of the values, we change the sign to multiplication.

5/11 * 11 / 4

This becomes 5/4

B) 29 ÷ 6 / 7

We can also do the same thing we did above by simply taking the inverse of the divisor and then change the sign to multiplication.

29 × 7 / 6 = 203/6

C) 5/9 ÷ 1 2/3

We have to first convert the mixed fraction into an improper fraction and the take the inverse of it and multiply.

5/9 ÷ 5/3

5/9 × 3/5 = 3/ 9 = 1/3

D) 5 3/5 ÷ 3 1/2

We also change the mixed fraction into improper fraction and then take inverse before multiplying.

16/3 ÷ 7/2

16/3 × 2/ 7 = 32/21

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The domain and the solution of the equation log₄²(1+x²)=0.25  are x = ±1

From the question, we have the following parameters that can be used in our computation:

log₄²(1+x²)=0.25

In this case, the domain of the expression and the solution are the same

So, we start by taking the square root of both sides

log₄(1+x²) = 0.5

Next, we apply the change of base law of logarithm

So, we have

1 + x² = 4⁰°⁵

Evaluate the exponent

1 + x² = 2

Evaluate the like terms

x² = 1

Take the square root of both sides

x = ±1

Hence, the domain and the solution are x = ±1

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Answer:

79.25

Step-by-step explanation:

What is the quotient of 3,487 divided by 44?

3,487/44 = 79.25

To produce the graph of y = (x+5)^2−2 from y=x , you should translate the graph left by 5 units, then downward by 2 units.

In mathematics, a graph is a visual representation or diagram that shows facts or values in an ordered way. The relationships between two or more items are frequently represented by the points on a graph. To develop a graph is to make a diagram that depicts the relationship between two or more objects. Make a sequence of bars on graph paper as an example of a graph. In discrete mathematics, a graph is made up of vertices—a collection of points—and edges—the lines connecting those vertices. In addition to linked and disconnected graphs, weighted graphs, bipartite graphs, directed and undirected graphs, and simple graphs, there are many other forms of graphs.

Here,

Translate the graph left by 5 units, then downward by 2 units, to create the graph of y = (x+5)^2-2 starting from y=x.

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Answer: 11/12

Step-by-step explanation:

it is a rise over run so the slope would be 11/12

Answer:

m² + 7m - 9

Step-by-step explanation:

[tex]\frac{m^3+16m^2+54m-81}{m+9}[/tex]

setting up the synthetic division

- 9 | 1   16   54   - 81

       ↓  - 9   - 63   81

      -------------------------

        1   7    - 9        0 ← remainder

quotient is m² + 7m - 9

since the remainder is zero then (m + 9) is a factor of the polynomial

The given sequence  48, 12, 3, .... written in the explicit formula is as follows:

aₙ = 48·(1/4)^(n-1)

The formal equations for L-functions in mathematics are Riemann's zeta function and links between sums over an L-complex function's number zeroes and sums over prime powers.

An arithmetic sequence has the explicit formula aₙ = a + (n - 1)d, and each term of the sequence may be computed without knowing the values of the previous terms.

The nth term of arithmetic, geometric, or harmonic series is usually the explicit formula.

So, the sequence we have is as follows:

48, 12, 3, ....

The common ratio of the terms is 1/4, and the first term is 48.

The universal equation for a geometric sequence's n-th term is:
aₙ = a1·r^(n-1)

This is true when r = 1/4 and a1 = 48:

aₙ = 48·(1/4)^(n-1)

Therefore, the given sequence  48, 12, 3, .... written in the explicit formula is as follows:

aₙ = 48·(1/4)^(n-1)

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The amount in the account after 2½ years is $3231.85 and the interest is $231.85

The amount in the account after 4 years is $3379.47and the interest is $379.47

The amount after 2½ years

The given variables can be represented as:

Deposit amount P = $3,000

Rate of interest, R = 3%

Time, t = 2½ years

The amount from compound interest formula can be calculated as:

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

Also from the question, we have

n = 2 i.e. compounded semi-annually.

Solving further, we replace the variables with their values in the above equation

A = 3000 * (1 + (3%/2))^(2*2.5)

Evaluate

A = 3231.85

The interest is

I = 3231.85 - 3000

I = 231.85

The amount after 4 years

Here, we have

Time, t = 4 years

The amount from compound interest formula can be calculated as:

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

Solving further, we replace the variables with their values in the above equation

A = 3000 * (1 + (3%/2))^(2*4)

Evaluate

A = 3379.47

The interest is

I = 3379.47 - 3000

I = 379.47

So, the interest is 379.47

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The equation is n(n+1) = n + n+1 +29. The two consecutive integers are 6, 7 or -5, -4

A word problem is a mathematical exercise where significant background information on the problem is presented in ordinary language rather than in mathematical notation

Given that: the product of two consecutive integers is 29 more than their sum.

Let the first integer and second  integer be n and n+1 respectively

We can write the equation as:

n(n+1) = n + n+1 +29

n² + n = 2n + 30

n² + n - 2n - 30 = 0

n² + - n - 30 = 0

(n - 6) (n + 5) = 0

n - 6 = 0 or n + 5 = 0

n = 6 or n = -5

Thus, n+1 = 7 or n+1 = -4

Therefore, the two  integers are 6, 7 or -5, -4

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Answer:

24.4 km

Step-by-step explanation:

[tex]\sqrt{14^2 + 20^2} = \sqrt{196 + 400} = \sqrt{596}[/tex] = 24.413111 = 24.4 km

Using the concept of Pythagorean theorem, the distance between Closside and Farlisle is 24.4km

The Pythagorean theorem is a fundamental principle in geometry that relates the lengths of the sides of a right triangle. It states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

Mathematically, the Pythagorean theorem can be expressed as:

c² = a² + b²

In this problem, we can substitute the values and solve the distance;

c² = 14² + 20²

c² = 596

c = 2√149

c = 24.4km

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The total cost of all the remaining tickets for the show will be equal to $1564.

The four basic mathematical operations are the addition, subtraction, multiplication, and division of two or even more integers. Among them is the examination of integers, particularly the order of actions, which is crucial for all other mathematical topics, including algebra, data organization, and geometry.

As per the given data in the question,

Total tickets left = 46

Price of each ticket = $34

Then, the price of 46 tickets will be,

46 × 34

= $1564

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Answer:

0.4, 14%, 70%

Step-by-step explanation:

0.4= 0.4%

14= 14%

70= 70%

Answer: It will take Stephanie 20 minutes to run 2 miles.

Step-by-step explanation:

Since 3 miles is equal to 30 minutes, let us find the number of minutes run per mile

divide 30 by 3

10-It takes 10 minutes to run 1 mile

multiply 10 by the number of miles, which is 2

2x10=20

20 minutes

Answer:

its A

Step-by-step explanation:

cause 2.5 x 3 is 7.5 and 3500+7.5% is 3762.50

Answer: [tex]x=4\sqrt{2}[/tex]

Step-by-step explanation:

Using the properties of a 45-45-90 triangle, the hypotenuse is [tex]\sqrt{2}[/tex] times the length of a leg.

Therefore, [tex]x=4\sqrt{2}[/tex].

The measure for the exterior angle to the angle X of the triangle XYZ is 112.55°

In any triangle, an exterior angle is equal the sum of its two opposite interior angles is equals.

For the triangle XYZ, the exterior angle to the angle X is equal to the sum of the two opposite interior angles Y and Z

angle Y = 38.25° and angle Z = 74.3°

exterior angle to X = 38.25° + 74.3°

exterior angle to X = 112.55°

This implies that the angle X = 180° - 112.55° = 67.45°

and 67.45° + 38.25° + 74.3° = 180° which is true for the sum of interior angles of a triangle.

Thus, exterior angle to the angle X that is derived to be 112.55° is true for the triangle XYZ.

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Answer:

112.55

Step-by-step explanation:

i got it right

a) Probability that the calls  last between 3.8 and 4.5 minutes is;

0.3413

b)  The probability that calls last more than 4.5 minutes is;

0.1587

c) Probability that the calls  last between 4.5 and 5.5 minutes is;

0.1511

d) Probability that the calls  last between 4.5 and 5.5 minutes is; 0.6607

The formula for z-score is;

z = (x' - μ)/σ

a) Probability that the calls  last between 3.8 and 4.5 minutes is;

P(3.8 < x' < 4.5)

z1 = (3.8 - 3.8)/0.7

z1 = 0

z2 = (4.5 - 3.8)/0.7

z2 = 1

The p-value between the two z-scores is; p-value = 0.3413

b)  The probability that calls last more than 4.5 minutes is;

P(x' > 4.5)

z =  (4.5 - 3.8)/0.7

z = 1

P(x > Z) = 0.1587

c) Probability that the calls  last between 4.5 and 5.5 minutes is;

P(4.5 < x' < 5.5)

z1 = (5.5 - 3.8)/0.7

z1 = 2.43

z2 = (4.5 - 3.8)/0.7

z2 = 1

The p-value between the two z-scores is; p-value = 0.1511

d) Probability that the calls  last between 4.5 and 5.5 minutes is;

P(3.5 < x' < 5.5)

z1 = (3.5 - 3.8)/0.7

z1 = -0.43

z2 = (5.5 - 3.8)/0.7

z2 = 2.53

The p-value between the two z-scores is; p-value = 0.6607

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As a result of it being so accessible, we became incredibly lax over the years.

The Complete Question.

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Answer:

17 dollars

Step-by-step explanation:

100 - 15 = 85

85 percent of 20 = 17

The equation of the polynomial on the given graph is: C. f(x) = x³ + 2x² - 5x - 6

On the graph we can see a polynomial, let's analyze some key features so we can identify it. First, we can see that when x = 0 (at the y-axis) the graph intercepts the axis at y = -6. So the constant term is -6.

Then we can discard the first and fourth options. The remaining options are:f(x) = x³ - 2x² - 5x - 6f(x) = x³ + 2x² - 5x - 6

Also on the graph, you can notice that when x = -1 the function becomes zero, so let's evaluate these two options in x = -1

The first one gives:f(-1) =  (-1)³ - 2*(-1)² - 5*-1 - 6f(-1) = -1 - 2 + 5  -6 = -4

So this option is not correct. The other function gives:f(x) = (-1)³ + 2*(-1)² - 5*(-1) - 6     = -1 + 2 + 5  -6 = 0

So we conclude that the correct option is the third one.f(x) = x³ + 2x² - 5x - 6

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Answer:

Definition of an isosceles triangle

For a parallelogram, g° = 36° and f° = 144°. and for pentagon, a° = 108° and h° = 36°.

What is a measurement of an angle?

Angles are measured in degrees (°) using a protractor. A protractor is a measuring device that is used to calculate or draw angles in terms of degrees.

In the first figure, adjacent angles of a parallelogram are supplementary.

so

         f° + 36° = 180°

Solving this we get f° = 144°

Opposite angles of the parallelogram are equal

so g° = 36°

Now in figure 2,

A regular pentagon has all the interior angles of 108°.

a° = 105°

and exterior angles of 72°

So we can find h°

72° + 72° + h = 180°

h = 180° - 144°

h = 36°

Hence, for a parallelogram, g° = 36° and f° = 144°. and for pentagon, a° = 108° and h° = 36°.

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(a) February 4 and November 3 of the year have about 9 h of daylight.

(b) 271 days with more than 9 hours of daylight.

What is a function?

A function, according to a technical definition, is a relationship between a set of inputs and a set of potential outputs, where each input is connected to precisely one output.

Here, we have

Given

(a) L(t) = 11+ 2.86 sin(2π/365 (t-80))

L(t) = 9

9 = 11+ 2.86 sin(2π/365 (t-80))

-2 = 2.86 sin(2π/365 (t-80))

-2/2.86 = sin(2π/365 (t-80))

-2/2.86 = -0.6993

Sin function is negative on [π, 3π/2] and [3π/2, 2π]

sin⁻¹(-0.6993) = 2π/365 (t-80)

2π/365 (t-80) = 3.9160 or 5.5087

t = 80 + 365/2π(3.9160 or 5.5087)

t = 35 or 307

After January 31 days and February 4 days

For t = 35 days =  February 4

For t =307days = November 3

Hence, February 4 and November 3 of the year have about 9 h of daylight.

(b) There are 35 + (365-307) = 35 + 58 = 94 days with 9 hours or less

Hence, 365 - 94 = 271 days with more than 9 hours of daylight.

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Since the normal distribution is symmetric, the response is 50%.

The Latin term "per centum," which signifies "by the hundredth," was the source of the English word "percentage." Segments with a denominator of 100 are considered percentages. In other words, it is a relationship where the worth of the entire is always considered 100.

As per the given information in the question,

According to the Empirical Rule, if a random variable is regularly distributed:

One standard deviation from the mean is found for 68% of the measurements.

The mean is within two standard deviations for 95% of the measurements.

99.7% of the measurements are found within three standard deviations of the mean.

Additionally, because of the symmetry of the normal distribution, 50% of the measurements fall below the mean, and 50% fall above.

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The number of songs that both companies will charge the same amount is 100. And to pay the least amount of money we need to choose Company B.

The mathematical expressions that we used to find unknown numbers are called Linear Equations. These can be formed by variables and constant terms according to given conditions. Here we use variables like x, y, z, etc to represent unknown variables.

Here we have,

Music company A charges a $ 15 membership fee and a $ 0.75 for each downloaded song

Music company B charges $ 0.90 for each downloaded song without the membership fee

Given question

a. For what number of songs will both companies charge the same amount?  

Let for x songs both companies will charge the same amount

Cost to download x songs from Company A

=> 15 + 0.75x

Cost to download x songs from Company B

=>  0.90x

As we assumed both costs are the same

=> 15 + 0.75x = 0.90x

=> 0.90x - 0.75 = 15

=> 0.15x = 15

-> x = 100

Therefore,

The number of songs that both companies will charge the same amount is 100.

b) You anticipate that you will download 150 songs. Which company should you choose if you want to spend the least amount of money?  

Cost of 150 that charges company A =  15 + 150(0.75)  

= 15 + 150(0.75)  = 15 + 112.5 = 127.5  

Therefore,

Company A will charge $ 127.5 for 150 songs

Cost of 150 songs that charges company B = 150(0.90)

= $ 135  

Company B will charge $ 135 for 150 songs

Therefore,

Company B will charge $ 135 for 150 songs

Thus,

To pay the least amount of money we need to choose Company B.

Therefore,

The number of songs that both companies will charge the same amount is 100. And to pay the least amount of money we need to choose Company B.

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The statements true is :

The standard equation of a circle is expressed as:

x²+y²+2gx+2fy+C = 0

Centre is (-g, -f)

radius = √g²+f²-C

Given a circle whose equation is x²+y² - 2x- 8 = 0

Get the center of the circle

2gx = -2x

2g = -2

g = -1

Similarly, 2fy = 0

f = 0

Centre = (-(-1), 0) = (1, 0)

This shows that the center of the circle lies on the x-axis

r = radius = √g²+f²-C

radius = √1²+0²-(-8)

radius =√9 = 3 units

The radius of the circle is 3 units.

For the circle x² + y² = 9, the radius is expressed as:

r² = 9

r = 3 units

Hence the radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

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The equation for the total cost is y = 22.5x, and the total cost of four more students joining the group is $292.50.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation, we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

Given:

Mrs. Jameson paid $202.50 for a group of 9 students to visit an amusement park.

Each student cost = 202.50/9 = $22.5

Total cost equation (y):

y = 22.5x

Here x is the number of students.

Plug x = 4 in the equation y = 22.5x

⇒ y = 22.5 (4)

y = $90

Total cost = 90 + 202.50 = $292.50

Hence, the equation for the total cost is y = 22.5x, and the total cost of four more students joining the group is $292.50.

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According to the combination technique,

A) 3 from A and 1 from B = 16320

B) 2 from A and 2 from B = 29070

C) All from A = 3060

D) 4 people regardless of department = 73815

E) at least 3 from department A = 19380

In math combination technique is used to determines the number of possible arrangements in a collection of items where the order of the selection does not matter.

Here we have given that 4-person grievance committee is to be selected out of 2 how many ways can the following committees be selected

And we need to find the following

Here we know that  4-person grievance committee is to be selected out of 2 departments, A and B, with 18 and 20 people.

In this one we have to find the number ways can the following committees be selected.

A) While the first condition is to 3 from A and 1 from B

Here the term "and" means to multiply

Then it can be written as

=> (18 people choose 3) x (20 people choose 1)

=> (18C3)(20C1) = (816)(20) = 16320

B) And then the next condition is 2 from A and 2 from B

In this one is written as,

=> (18 people choose 2) x (20 people choose 2)

=> (18C2)(20C2) = (153)(190) = 29070

C) All from A

which is equal to the following,

=> 18 people choose 4 = 18C4 = 3060

D) Next, we have to do the calculation for 4 people regardless of department

=> 18+20 or 38 people choose 4 = 38C4 = 73815

E) Finally, at least 3 from department A.

'In other words, it can be written as choose 3 from department A and choose 1 from department B or  Choose 4 all from department A

Where "And" means to multiply and "or" means to add.

Therefore, the condition is written as,

=> [(18 people choose 3) times (20 people choose 1)] plus  (18 people choose 4)

=> (18C3)(20C1) + (18C4) = (816)(20) + 3060 = 19380

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