ayuda porfa está demasiado difícil:'(​

Answer:

7.5%

Step-by-step explanation:

A percentage is a ratio or a number expressed in the form of a fraction of 100. Percentages are often used to express a part of a total.

In order to express 150 mL as a percentage of 2 liters (2000 mL), you need to divide 150 by 2000 and then multiply the result by 100 to get the percentage.

Therefore, 150 mL is 7.5% of 2 liters.

Answer:

17:85

Step-by-step explanation:

The system of equations created from the statements is 3m + 2l = 7 and 4m + l = 6

Let's define the variables:

Using these variables, we can create the following system of equations to represent the given information:

Equation 1: 3m + 2l = 7

Muffy ordered 3 muffins and 2 lattes for $7.

Equation 2: 4m + l = 6

Sammy ordered 4 muffins and a latte for $6.

Hence, the system is 3m + 2l = 7 and 4m + l = 6

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Answer:

x=2

Step-by-step explanation:

2(4x - 1) = -10(x - 3) + 4

First, we distribute the 2 on the left side and -10 on the right side using the distributive property of equality:

8x - 2 = -10x + 30 + 4

Next, we combine like terms on the right side:

8x - 2 = -10x + 34

We add 10x to both sides using the addition property of equality:

8x - 2 + 10x = -10x + 34 + 10x

Simplifying:

18x - 2 = 34

We add 2 to both sides:

18x - 2 + 2 = 34 + 2

Simplifying:

18x = 36

Finally, we divide both sides by 18:

18x / 18 = 36 / 18

Simplifying:

x = 2

In each step, we used a different property of equality:

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Answer:

see below

Step-by-step explanation:

350=[tex]\frac{4}{3}[/tex][tex]\pi[/tex]r[tex]2^{2}[/tex]

^ is this correct. i will edit my answer to be the solution.

Answer:

  8.65 g/cm³

Step-by-step explanation:

You want the density of a bronze statue with a volume of 36 cm³ and a mass of 311.4 g.

Density is the ratio of mass to volume:

  ρ = mass/volume = (311.4 g)/(36 cm³) ≈ 8.65 g/cm³

The density of the statue is about 8.65 g/cm³.

The equation x/√16+x² can be rewritten by using x= 4 tan θ as x/4.

The given expression is x/√16+x^2 and we need to rewrite it by using x= 4 tan θ.

We know that 1 + tan2θ = sec2θ ⇒ 1 = sec2θ − tan2θ ... (1)

x = 4tanθ⇒ x/4 = tanθ ... (2)

Let's substitute (2) in (1) and get:

sec2θ − tan2θ = sec2θ − x²/16 ... (3)

Now, let's simplify the denominator and numerator of x/√16+x² using trigonometry.

We have:

x/√16+x²= x/[4sec2θ]

Using (2), we know that x = 4 tanθ, so substituting this in (3) we get:

sec2θ − x²/16 = sec2θ − (4tanθ)2/16= sec2θ − tan2θ= 1 (from equation (1))

Therefore,

x/√16+x²= x/[4sec2θ] = x/[4√(sec2θ − tan2θ)] (from equation (3))= x/[4√1]= x/4

Hence, x= 4 tan as x/4 can be used to rewrite x/16+x².

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The distance on the map where the scale is 1 inch to 40 miles is 1.75 inches.

First we know that the cities are at 2.8 inches apart on a map whose scale is 1 inch to 25 miles, then the real distance between the two cities is:

[tex]D = (2.8)\times25\text{mi}= 70 \ \text{mi}[/tex]

Now we move to a map where each inch is 40 miles, to find the distance in inches, we can take the quotient between the real distance and the scale, it gives:

[tex]D = (\dfrac{70\text{mi}}{40\text{mi}} ) \ \text{inches}[/tex]

[tex]D = 1.75 \ \text{inches}[/tex]

The distance on the other map is 1.75 inches.

In response to the query, we can state that Hence, P"s coordinates are coordinates  (3, 4).

When locating points or other geometrical objects precisely on a manifold, such as Euclidean space, a coordinate system is a technique that uses one or more integers or coordinates. Locating a point or item on a two-dimensional plane requires the use of coordinates, which are pairs of integers. Two numbers called the x and y coordinates are used to describe a point's location on a 2D plane. a collection of integers that represent specific locations. The figure often has two numbers. The first number denotes the front-to-back measurement, while the second number denotes the top-to-bottom measurement. For example, in (12.5), there are 12 units below and 5 above.

A point's y-coordinate changes sign when it is reflected across the x-axis, but its x-coordinate stays the same.

Hence, we must modify the sign of the y-coordinate while leaving the x-coordinate unaffected in order to reflect point P(3,-4) across the x-axis. The reflected point P' will therefore have coordinates (3, 4).

Hence, P"s coordinates are (3, 4).

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The inequality 5.5+37.93d ≤ 300  should be used to calculate the number of days.

The relationship between two non-equal expressions, denoted by a symbol such as 'not equal to, 'greater than' or 'less than' is known as inequality.

She drives 50 miles and per mile, it costs $0.11.

So, for 50 miles, cost = 50 x $0.11 = $5.5

and per day cost = $37.93

Thus, the inequality that must be used to calculate the number of days is

5.5+37.93d ≤ 300 .

the complete question is-

A rental car company charges $37.93 per day to rent a car and $0.11 for every mile driven. Taylor wants to rent a car, knowing that:

She plans to drive 50 miles.

She has at most $300 to spend.

Which inequality can be used to determine dd, the maximum number of days Taylor can afford to rent for while staying within her budget?

5.5d + 37.93 ≥ 300

5.5 + 37.93d ≤300

5.5 + 37.93d ≥ 300

5.5d + 37.93 ≤ 300

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a. If Kayla runs on the inside she would run for about 400.96 meters

b. If Emi runs on the outer edge, in one lap, she would run for about 463.76 meters

c. The difference = 62.80 m

This is = 200 + (2π * 42 / 2) + (2π * 42 / 2)

= 200 + 84 π

= 200 + 84 * 3.14

= 463.76 meters

Next we have to solve for the perimeter of the inside edge

200 + (2 π * 32 / 2) +  (2 π * 32 / 2)

= 200 + 64π

= 400.96

The difference is given as 463.76 - 400.96

= 62.80 m

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The change in the amount of shore after 7 years and 4 months is -5.4975 feet.

First, let us convert the values into the same quantities

7 1/3 years = 7 + 1/3 years = 7.33 years

The change in shore after 7 years and 4 months can be calculated as

Change in amount of shore = (average change per year) x (number of years)

Change in amount of shore = (-3/4 foot/year) x (7.33 years)

Change in amount of shore = -5.4975 feet.

Therefore, the change in the amount of shore after 7 years and 4 months is approximately -5.4975 feet.

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The initial number of cups in Box B at first is given as follows:

810 cups.

The initial number of cups in box B is obtained solving a system of equations, for which the variables A, B and C represents the amounts of each box.

A shop owner had three boxes, containing a total of 1500 plastic cups. The number of plastic cups in Box A to the total number of plastic cups was 3:10, hence the initial amount of Box A is given as follows:

0.3 x 1500 = 450 cups.

Then:

B + C = 1500 - 450

B + C = 1050.

He sold 330 plastic cups from Box B and sold 1/3 of the plastic cups in  = Box C. The number of plastic cups left in Box B to the number of plastic cups left in Box C was 3:1, hence:

(B - 330)/(2C/3) = 3

B - 330 = 2C

C = 0.5B - 165

Replacing into B + C = 1050, the value of B is given as follows:

B + 0.5B - 165 = 1050

B = 1215/1.5

B = 810.

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In response to the question, we may say that  Therefore, the inverse of the given matrix is: [ 0.0 1.5 -1.0 ], [ 1.0 -2.0 2.0 ] and [-1.0 1.5 -2.0 ]

An arrangement of integers in rows and columns is known as a matrix. learns about matrices' components and dimensions and first presents them. A matrix is a rectangular grid with integers arranged in rows and columns. For example, Matrix A contains two rows and three columns. The origin of its moniker is due to its single row and 1 n row matrix arrangement. For example, a row matrix of order 1 by 4 is A = [1 2 4 5]. The row matrix P = [-4 -21 -17] of order 1-by-cubic is another example.

Let's begin by calculating the determinant of the matrix:

[tex]det(A) = 1(41 - 30) - 2(40 - 20) + 3(10 - 21)\\det(A) = 4 - 0 - 6\\det(A) = -2\\[/tex]

Since the determinant is not zero, an inverse exists. Let's find the adjugate matrix:

[tex]adj(A) = [dof(A)]^T\\[/tex]

where dof(A) is the matrix of cofactors of A.

[tex]dof(A) = [(-1)^(1+1)0, (-1)^(1+2)2, (-1)^(1+3)(-2),\\(-1)^(2+1)(-3), (-1)^(2+2)4, (-1)^(2+3)(-3),\\(-1)^(3+1)2, (-1)^(3+2)(-4), (-1)^(3+3)*4]\\dof(A) = [0, -2, 2, 3, 4, -3, 2, -4, 4]\\[/tex]

Therefore,

[tex]adj(A) = [0 -3 2; -2 4 -4; 2 -3 4]\\[/tex]

Finally, we can find the inverse matrix by multiplying the adjugate matrix by the reciprocal of the determinant:

[tex]A^(-1) = (1/det(A)) * adj(A)\\A^(-1) = (-1/2) * [0 -3 2; -2 4 -4; 2 -3 4]\\A^(-1) = [0.0 1.5 -1.0; 1.0 -2.0 2.0; -1.0 1.5 -2.0]\\[/tex]

Therefore, the inverse of the given matrix is:

[ 0.0 1.5 -1.0 ]

[ 1.0 -2.0 2.0 ]

[-1.0 1.5 -2.0 ]

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Answer

[ 1.25   -0.75

-0.5      0.5 ]

Step-by-step explanation:

The data collected by the ministry of health denotes C) Observational Study

The degree of movement along or opposite that may occur in one of the data values when another data value is increased or lowered, respectively, is shown by the correlation of two pairs of data values. An observational study selects participants from a sample of the community, but the independent variable is not controlled due to moral considerations, outside influence, and occasionally, restrictions.

To gather data on office employment and worker health concerns, the health ministry only provides questionnaires to employees every five years. They are only keeping an eye on the employees, and the survey enables them to evaluate and draw a connection between working in an office and health issues among employees. This makes the study an observational one.

Complete Question:

The ministry of health was interested in the relationship between the office habits of workers and health issues. Each year, they distributed a survey to all workers in the public sector that contained various questions on work habits as well as a standard health questionnaire. After 5 years they gathered and analyzed the entire data.

A) Sample study

B)Experiment

C) Observational Study

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A system of inequalities to represent the constraints of this problem are x ≥ 0 and y ≥ 0.

A graph of the system of inequalities is shown on the coordinate plane below.

In order to write a system of linear inequalities to describe this situation, we would assign variables to the number of HD Big View television produced in one day and number of Mega Tele box television produced in one day respectively, and then translate the word problem into algebraic equation as follows:

Since the HD Big View television takes 2 person-hours to make and the Mega TeleBox television takes 3 person-hours to make, a linear equation to describe this situation is given by:

2x + 3y = 192.

Additionally, TVs4U’s total manufacturing capacity is 72 televisions per day;

x + y = 72

For the constraints, we have the following system of linear inequalities:

x ≥ 0.

y ≥ 0.

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Answer:

Given:

Initial velocity, u = 0 (since the car is stopped)

Final velocity, v = 80 m/s

Time taken, t = 5 s

Required:

Acceleration, a

Equation:

We can use the following equation to calculate the acceleration:

a = (v - u) / t

where u is the initial velocity, v is the final velocity, and t is the time taken.

Solution:

Substituting the given values, we get:

a = (80 - 0) / 5

a = 16 m/s²

Answer:

The acceleration of the car is 16 m/s².

(^2 is just another version of ²)

Hope this helped! Sorry if it didn't. If you need more help, ask me! :]

Answer:

We need to find the value of f(g(10)) when k = 3, where f(x) = 6x - 2 and g(x) = 5x - kx + 15.

First, we need to evaluate g(10) when k = 3:

g(x) = 5x - kx + 15

g(10) = 5(10) - 3(10) + 15

g(10) = 50 - 30 + 15

g(10) = 35

Now that we know g(10) = 35, we can evaluate f(g(10)):

f(x) = 6x - 2

f(g(10)) = 6(35) - 2

f(g(10)) = 208

Therefore, when k = 3, f(g(10)) = 208.

Step-by-step explanation:

Every-other-month for two years ( 24 months)  is  12 deductions

12 * $ 160 = $ 1920

The spread of Carter's social media post is f(x) = 3(3)x. On Day 3, Ben's post will be received 8 shares and Carter's post will be received 27 shares. On Day 10, Ben's post will be received 524 shares and Carter's post will be received 729 shares.

Amber's new function of f(x) = 3(4)x + 45 will produce a graph with a steeper slope than the original graph of Amber's photo share.  Carter's post travels the fastest, as his equation form has the highest exponential rate. Depending on the goal of the post, one might prefer a post with fewer friends initially but more shares, such as Amber, or more friends initially but fewer shares, such as Ben.

Exponential function is a mathematical function that increases or decreases exponentially. It is an equation of the form y = ax^b, where a is the base and b is the exponent, and x is the independent variable.

1. The exponential function to represent the spread of Ben’s social media post is f(x) = 3(2)x.

2. The exponential function to represent the spread of Carter’s social media post is f(x) = 3(3)x.

3. The graph of Ben’s post will have a curve that increases exponentially as the x-values increase, while the graph of Carter’s post will have a curve that increases exponentially faster than Ben’s as the x-values increase. Three points that can be used to graph each curve are (0, 3), (1, 9), and (2, 27) for Ben’s post and (0, 3), (1, 9), and (2, 27) for Carter’s post.

4. On Day 3, Ben’s post will have 81 shares (f(3) = 3(2^3) = 81), and Carter’s post will have 243 shares (f(3) = 3(3^3) = 243). On Day 10, Ben’s post will have 59049 shares (f(10) = 3(2^10) = 59049), and Carter’s post will have 59049 shares (f(10) = 3(3^10) = 59049). This is shown in the equation form of the functions because each function is in the form of a(b^x). For Ben’s post, a = 3, b = 2, and for Carter’s post, a = 3, b = 3. As the x-values increase, the value of b increases exponentially and so the total number of shares increases exponentially.

5. Amber’s new function representing her photo shares is f(x) = 3(4)x + 45. The graph of this function will be different from the original graph of Amber’s photo share because it is no longer an exponential function - it is a linear function. The graph will have a constant rate of increase as the x-values increase, reflecting that the number of shares is increasing by a constant number with each additional day.

6. Based on the results, Carter’s post travels the fastest. This is shown in the equation form of the functions because Carter’s post has a larger value of b (3) than Ben’s post (2), indicating that Carter’s post is increasing exponentially faster than Ben’s post.

7. It would depend on the situation, but generally speaking it would be preferable to have more friends initially and fewer shares, like Amber. This is because if a post has few friends initially and more shares, the post will spread faster, but there is no guarantee that the post will continue to spread after it reaches its peak. If a post has more friends initially and fewer shares, the post will spread more slowly, but it is more likely to continue to spread for a longer period of time.

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Hence, in response to the provided question, we can say that As a result,  arithmetic progression the usual difference is d = -30.

The difference between subsequent terms in a string will never vary, and this is referred like an arithmetic progression. The sequences 5, 7, 9, 11, 13, through 15 are examples of arithmetic progressions with a tolerance of 2. Arithmetic progression (A.P.) is a progression that has a set tolerance between any 2 consecutive values. Numerical progression may fall into one of two main types: finite-length arithmetic series A finite geometry progression is a series with just a fixed number of terms. The series' terms can be used to calculate the early, late, leniency, and number of term.

A) The sequence is, indeed, arithmetic.

We can find the common difference by subtracting any two consecutive terms:

109 - 9 = 100

209 - 109 = 100

309 - 209 = 100

As a result, the typical difference is d = 100.

A) The sequence is, indeed, arithmetic.

We can find the common difference by subtracting any two consecutive terms:

-32 - (-2) = -30 \s-62 - (-32) = -30 \s-92 - (-62) = -30

As a result, the usual difference is d = -30.

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A system of equations can be used to determine whether the paths of the boats cross include the following:

A. y = -1/9(x - 1)² + 10.

    y = 1/8x² - 7

Based on the information provided about the first boat, the x-coordinate of the vertex can be determined as follows;

x = -b/2a

1 = -b/2a

b = -2a

Additionally, the standard form of the equation of a parabola (quadratic function) is given by;

y = a(x - h)² + k.

y = ax² - 2ax + c.

Therefore, the y-coordinate of the vertex is given by:

y = ax² - 2ax + c

10 = a(1)² - 2a(1) + c  

c - a = 10   .......equation 1.

Since the parabola passes through the point (-8, 1), we have:

y = ax² - 2ax + c

1 = a(-8)² - 2a(-8) + c  

80a + c = 1     .......equation 1.

Solving equations 1 and 2 simultaneously, we have:

81a = -9

a = -9/81 = -1/9

b = -2a = -2(-1/9) = 2/9

c = 10 + a = 10 - 1/9 = 89/9

Rewriting the equation for the first boat, we have:

y = -1/9x² + 2/9x + 89/9

y = -1/9(x - 1)² + 10.

For the second boat, the x-coordinate of the vertex can be determined as follows:

y = ax² + bx + c

x = -b/2a

0 = -b/2a

b = 0

Additionally, the y-coordinate of the vertex is given by:

y = ax² + c

-7 = a(0)² + c  

c = -7

Since the parabola passes through the point (-8, 1), we have:

y = ax² + c

1 = a(-8)² - 7

a = -1/8

b = 0

c = -7

Rewriting the equation for the second boat, we have:

y = ax² + c

y = 1/8x² - 7

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Answer: A

Step-by-step explanation:

edge 2023

Answer:

6

Step-by-step explanation:

.

Answer:

6

Step-by-step explanation:

look above

Answer:

Starting with the expression n² - 2 - (n - 2)², we can simplify it by expanding the second term using the formula for the square of a binomial:

n² - 2 - (n - 2)² = n² - 2 - (n² - 4n + 4)

Next, we can combine like terms:

n² - 2 - (n² - 4n + 4) = n² - n² + 4n - 6

Simplifying further, we get:

n² - 2 - (n - 2)² = 4n - 6

To prove that this expression is always even, we can show that it can be written in the form 2k, where k is an integer.

So, let's rewrite the expression as:

4n - 6 = 2(2n - 3)

Since 2n - 3 is an integer (because n is an integer greater than 1), we have shown that 4n - 6 can be written in the form 2k, where k is an integer.

Therefore, we have proved algebraically that n² - 2 - (n - 2)² is always an even number.

By answering the above question, we may state that As a result, there equation were 108 scouts who attended the jamboree.

A math equation is a mechanism for connecting two claims by using the equals sign (=) to indicate equivalence. A mathematical statement that establishes the equivalence of two mathematical expressions is known as an equation in algebra. The equal symbol, for example, splits the numbers 3x + 5 and 14. A mathematical formula can be used to describe the relationship between two phrases written on opposite sides of a letter. The logo and programme are frequently the same. 2x - 4 Equals 2, for example.  

Because each tin is divided by four scouts, the number of fruit tins necessary will be one-fourth of the number of scouts. As a result, the quantity of tins of fruit required is x/4.

The total number of tins opened, according to the query, is 117. Based on the preceding data, we can construct the following equation:

x/2 + x/3 + x/4 = 117

To remove the denominators, multiply both sides by 12 (the LCM of 2, 3, and 4).

6x + 4x + 3x = 1404

When we simplify, we get:

13x = 1404

By multiplying both sides by 13, we get:

x = 108

As a result, there were 108 scouts who attended the jamboree.

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well, Not from tips that'd be 100% - 9% = 91%, so 91% of $7000.

[tex]\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{91\% of 7000}}{\left( \cfrac{91}{100} \right)7000}\implies \text{\LARGE 6370}[/tex]

The area of the entire rectangle is 20x^2 - 10x - 30

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

Height = 5

Width = 4x^2 - 2x - 6

Using the above as a guide, we have the following:

The area of a rectangle is the product of its dimension

So, we have

Area = Height * Width

Substitute the known values in the above equation, so, we have the following representation

Area = 5 * (4x^2 - 2x - 6)

Evaluate

Area = 20x^2 - 10x - 30

Hence, the area is 20x^2 - 10x - 30

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Therefore , the solution of the given problem of area comes out to be section has a size of about 164.07 square centimetres.

Calculating how much space would be needed to fully cover the outside will reveal its overall size. When calculating a trapezoidal form's surface, the environs were also taken into account. The surface area of something determines its overall measurements. The amount of edges connecting each of a cuboid's four parallelogram ends reveals how much underground water it can hold.

Here,

The following algorithm determines a sector's area:

=> A = (θ/360°) * π * r²

where is the mathematical constant pi, r is the radius, and is the centre angle (approximately 3.14).

If we substitute the numbers provided, we get:

=> A = (30/360) * 3.14 * (12.5)^2

By condensing and computing, we arrive at:

=> A ≈ 164.06

To the closest hundredth, we have the following:

=> A ≈ 164.06 ≈ 164.07

Consequently, the section has a size of about 164.07 square centimetres.

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