please help i will give brianliest to whoever is correct!!

The cost of the skirt and blouse after the discount would be -

$52.8 and $56.1 respectively.

Given is that Laura has bought a skirt and a blouse for 66 euros, both had the same price but they have given her a 20% discount on the skirt and only 15% on the blouse.

The cost skirt would be -

${x} = 66 - {20% of 66}

${x} = 66 - {20/100 x 66}

${x} = 66 - {66/5}

${x} = 66 - 13.2

${x} = 52.8

The cost of blouse would be -

${y} = 66 - {15% of 66}

${y} = 66 - {15/100 x 66}

${y} = 66 - {3/20 x 66}

${y} = 66 - 9.9

${y} = 56.1

Therefore, the cost of the skirt and blouse after the discount would be -

$52.8 and $56.1 respectively.

To solve more questions on equation modelling, visit the link below-

https://brainly.com/question/2037734

#SPJ1

{Question in english -

Laura has bought a skirt and a blouse for 66 euros, both had the same price but they have given her a 20% discount on the skirt and only 15% on the blouse. How much did each item cost??

Answer:

x = 9

Step-by-step explanation:

5(x+2) = 5x+1

Our main goal is to get our variables on one side and our numbers on the other. Then we can find solve the variable. If we follow PEMDAS (parenthesis, exponents, multiplication, division, addition, and subtraction) we can follow the steps to solve it correctly.

First, we examine our parenthesis, but since we can't do anything, we move on to multiplication, since no exponents are present.

5(x+2) = 5x+10

5x+10 = 5x+1

Now we solve our addition, we move our numbers on one side and our variables on the other. To do this, we instead subtract our numbers from each other, since they are all positive.

10-1 = 9

5x+9 = 5x

5x-5x = x

9 = x

Regards!

Answer: 1st circle 0.42n

Step-by-step explanation:

Answer:

p=0.42n

Step-by-step explanation:

Im not sure but if you do 2.52 divided by 6 you get 0.42 so my answer is A (p=0.42n)

A chart or graph that presents grouped data with rectangular bars with lengths proportional to the values that they represent is known as a bar graph.

A bar graph is a way to visually represent data using rectangular bars with lengths proportional to the values that they represent.

The bars can be either vertical or horizontal, depending on the orientation of the graph. The vertical bars are known as a column graph, while the horizontal bars are known as a bar chart.

The purpose of a bar graph is to provide a clear and concise representation of data that is easy to understand and interpret. Bar graphs are commonly used to compare different sets of data or to track changes in data over time.

They can be used to show how a particular variable changes over time or to compare the values of different variables in a single graph.

Bar graphs are easy to read and interpret, making them a popular choice for both simple and complex data sets.

They are widely used in business, science, and education, among other fields, to present information in a clear and concise manner.

To learn more about : graph

https://brainly.com/question/19040584

#SPJ8

Answer:

Yes it is congruent

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

I did the test

Hope this helps :)

The area of two petals of the polar curve r = 10 sin(3θ) is:  ∫[0 to π/3] (100 sin^2(3θ)) dθ.

To find the area of the region for two petals of the polar curve r = 10 sin(3θ), follow these steps:

1. Identify the range of θ for one petal: Since the graph is symmetric about the polar axis, one petal will be covered in the range from 0 to π/3. Thus, we will integrate from 0 to π/3 and then multiply the result by 2 to find the area of two petals.
2. Set up the integral: The area of a polar curve is given by the formula (1/2)∫r^2 dθ. In this case, r = 10 sin(3θ), so the integral becomes:
(1/2)∫(10 sin(3θ))^2 dθ
3. Simplify the integral: The integral becomes:
(1/2)∫(100 sin^2(3θ)) dθ
4. Evaluate the integral from 0 to π/3: To find the area of one petal, integrate the simplified expression over the range [0, π/3]:
(1/2) ∫[0 to π/3] (100 sin^2(3θ)) dθ
5. Multiply by 2 to find the area of two petals: After finding the area of one petal, multiply by 2 to get the area of two petals:
2 * (1/2) ∫[0 to π/3] (100 sin^2(3θ)) dθ

6. The final answer for the area of two petals of the polar curve r = 10 sin(3θ) is:
∫[0 to π/3] (100 sin^2(3θ)) dθ.

Learn more about area

brainly.com/question/27683633

#SPJ11

Answer:

Step-by-step explanation:

Answer:

Y=32

Step-by-step explanation:

Answer:

1,256 flower

Step-by-step explanation:

First, we need to calculate the circumference of the circle. The formula for the circumference of the circle is:

C

=

2

π

r

If we substitute

100

ft

for

r

and use

3.14

to approximate

π

we get a circumference of:

C

=

2

⋅

3.14

⋅

100

ft

C

=

6.28

⋅

100

ft

C

=

628

ft

We can now convert the circumference in feet to inches;

628

ft

×

12

in

1

ft

⇒

628

ft

×

12

in

1

ft

⇒

628

×

12

in

⇒

7536

in

To find how many flowers we need we can divide the circumference in inches by the 6 inches between flowers giving:

7536

in

×

1

flower

6

in

⇒

7536

in

×

1

flower

6

in

⇒

7536

×

1

flower

6

⇒

7536

flower

6

⇒

1256

flower

You would require 1,256 flowers

The union of two sets is to avoid counting the same elements twice.

The mathematical logic subfield of set theory investigates sets, which can be loosely defined as collections of objects. Although any object can be combined into a set, set theory, as a mathematical discipline, focuses primarily on those that are relevant to mathematics as a whole.

Given union of set

(A ∪ B),

The set of all objects that are members of either A or B, or both, is the union of the sets A ∪ B.

let us take example,

A = { 1, 2, 3, 4}

B = {3, 4, 5, 6, 7}

(A ∪ B) = { 1, 2, 3, 4} ∪  {3, 4, 5, 6, 7}

we can simply write all of A and B's elements in a single set to avoid duplicates to find A U B.

(A ∪ B) = {1, 2, 3, 4, 5, 6, 7}

Hence the  union of two sets is a set that contains all the elements of both set and avoid duplicates.

Learn more about set;

https://brainly.com/question/28492445

#SPJ12

Answer: 9

Step-by-step explanation: on a number line -9 is before 0 9 is after 0 , and any number to the right of a number is greater.

The value of an depends on the exponents and the pattern of the series. By identifying the conditions that satisfy the equation, we can determine the specific values of an. The function represented by the series is an alternating series based on the pattern observed.

To determine the value of an that satisfies the equation ∑[n=1 to ∞] an xn-1 + ∑[n=0 to ∞] an xn = 0, we need to analyze the coefficients and exponents of the series.

By examining the terms in the equation, we can identify a pattern that allows us to find a solution for an. The function represented by the series ∑[n=0 to ∞] an xn can then be determined based on the values of an and the corresponding exponents.

The equation can be rewritten as ∑[n=1 to ∞] an xn-1 + an xn = 0. Notice that the terms involving xn-1 and xn have a common factor of an. Factoring out an, we get an(xn-1 + xn) = 0. For this equation to hold true for all values of x, either an = 0 or xn-1 + xn = 0.

If an = 0, then it does not contribute to the series. However, if xn-1 + xn = 0, we can solve for xn-1 = -xn. This suggests that the function represented by the series is an alternating series, where the terms alternate between positive and negative values.

In summary, the value of an depends on the exponents and the pattern of the series. By identifying the conditions that satisfy the equation, we can determine the specific values of an. The function represented by the series is an alternating series based on the pattern observed.

Learn more about function here: brainly.com/question/30721594

#SPJ11

The function fg(x) seems to be the product of f and g, whereas the function fog(x) is the composition of f and g.

A function whose values are discovered by applying another function to an independent variable and then applying that second function to the result, and whose domain consists of those possible values for which the result yielded by the first function lies inside the domain of both the second.

A composite function is one that is dependent on another. When one function is swapped for another, a composite function is formed. For example, f(g(x)) is the composite function created when g(x) is replaced for x in f. (x). f(g(x)) can be translated as "f of g of x."

To know more about composite functions visit:

https://brainly.com/question/20379727

#SPJ9

Answer:

d + c ≤ 15

6*d + 7.50*c≥ 75

Step-by-step explanation:

  Mathematical inequality is that proposition that relates two algebraic expressions whose values ​​are different. It is a proposition of relation between two different elements, either by greater, lesser, greater or equal inequality, or less or equal.

In other words, an inequality is obtained by writing two numerical or algebraic expressions related to any of the symbols>, <, ≥ or ≤.

You know Tom's mom said that he can't work more than 15 hours to make sure he keeps up with his homework. That is, the number of hours walking the neighbor's dog added to the car wash should not exceed 15 hours, that is, it must be less than or equal to that amount. If d represents the number of hours walking your neighbor's dog and c represents the number of hours washing cars, then it is possible to represent this by the following inequality:

d + c ≤ 15 Inequality (A)

On the other hand, you know that Tom needs to earn at least $ 75 to cover the expenses of this weekend's prom. In other words, the money earned by walking dogs added to that earned by washing cars must be equal to or greater than $ 75. If Tom will walk his neighbor's dog for $ 6 an hour and wash cars for $ 7.50 an hour, then $ 6*d is the money earned walking dogs and $ 7.50*c is the money earned from washing cars. So this is represented by the inequality:

6*d + 7.50*c≥ 75 Inequality (B)

Then the system of inequalities that represents this situation is given by the Inequation (A) and the Inequation (B)

The derivative of the function 3x/cos(x) is (3cos(x) + 3xsin(x))/cos^2(x).

The function 3x/cos(x) using the terms you've mentioned.

1. First, recognize that the function is a quotient of two functions: f(x) = 3x and g(x) = cos(x).

2. Apply the Quotient Rule for differentiation, which states that if h(x) = f(x)/g(x), then h'(x) = (f'(x)g(x) - f(x)g'(x))/g^2(x).

3. Find the derivatives of the functions f(x) and g(x). For f(x) = 3x, the derivative f'(x) is 3. For g(x) = cos(x), the derivative g'(x) is -sin(x).

4. Now, apply the Quotient Rule using the derivatives you found: h'(x) = (3cos(x) - 3x(-sin(x)))/cos^2(x).

5. Simplify the expression: h'(x) = (3cos(x) + 3xsin(x))/cos^2(x).

So, the derivative of the function 3x/cos(x) is (3cos(x) + 3xsin(x))/cos^2(x).

To know more about Quotient Rule refer to

https://brainly.com/question/30278964

#SPJ11

The values of the expressions for the given set of scores are:

a. εX = 0

b. εx^2 = 50

c. ε(x+3) = 15

To find the value of each expression for the given set of scores, let's calculate them one by one:

Set of scores: X = 6, -1, 0, -3, -2

a. εX (sum of scores):

εX = 6 + (-1) + 0 + (-3) + (-2) = 0

b. εx^2 (sum of squared scores):

εx^2 = 6^2 + (-1)^2 + 0^2 + (-3)^2 + (-2)^2 = 36 + 1 + 0 + 9 + 4 = 50

c. ε(x+3) (sum of scores plus 3):

ε(x+3) = (6+3) + (-1+3) + (0+3) + (-3+3) + (-2+3) = 9 + 2 + 3 + 0 + 1 = 15

Therefore, the values of the expressions are:

a. εX = 0

b. εx^2 = 50

c. ε(x+3) = 15

To learn more about expressions visit : https://brainly.com/question/1859113

#SPJ11

\(\\ \sf\dashrightarrow 4(x-1)+1=6x-2(4+x)\)

\(\\ \sf\dashrightarrow 4x-4+1=6x-8-2x\)

\(\\ \sf\dashrightarrow 4x-3=4x-8\)

\(\\ \sf\dashrightarrow 4x-4x=-8+3\)

\(\\ \sf\dashrightarrow 0=-5\)

Answer:

64 square inches

Step-by-step explanation:

im not 100% sure but i think its right

Should there be a global effort to sharply reduce the cutting and burning of old-growth forests?

Yes, there should be a global effort to sharply reduce the cutting and burning of old-growth forests. Old-growth forests are vital ecosystems that provide numerous environmental, social, and economic benefits. They are home to diverse species, including endangered ones, and play a crucial role in carbon sequestration, mitigating climate change, and preserving biodiversity.

Cutting and burning old-growth forests contribute to deforestation, habitat loss, and greenhouse gas emissions. It disrupts ecosystems, threatens species survival, and exacerbates climate change. Protecting old-growth forests is essential for maintaining ecological balance and promoting sustainable development.

Numerous references and scientific studies support the importance of preserving old-growth forests. Some relevant sources include:

"The Importance of Old-Growth Forests" by the World Wildlife Fund (WWF): https://www.worldwildlife.org/initiatives/old-growth-forests

"Old-growth forest protection: A key tool in fighting climate change" by The Nature Conservancy: https://www.nature.org/en-us/what-we-do/our-insights/perspectives/old-growth-forest-protection-fighting-climate-change/

"Old-Growth Forests: Function, Fate and Value" by the United Nations Environment Programme (UNEP): https://www.unep-wcmc.org/resources-and-data/old-growth-forests-function-fate-and-value

These resources provide comprehensive information on the importance of old-growth forest conservation and the need for global efforts to reduce cutting and burning practices.

The question provided seems incomplete and unclear. It mentions a relationship between letters of the alphabet and percentages but does not provide any context or options to choose from. Please provide more information or clarify the question, and I'll be glad to assist you further.

The number of moles of hydrogen that are needed to produce 136 g of ammonia is 12.00 moles H2.

We need to use the balanced chemical equation for the synthesis of ammonia, which is:

N2 + 3H2 → 2NH3

From this equation, we can see that 3 moles of hydrogen are needed to produce 2 moles of ammonia. We can use this ratio to find out how many moles of hydrogen are needed to produce a certain amount of ammonia.

First, we need to convert the given mass of ammonia (136 g) to moles:

136 g NH3 / 17.03 g/mol = 7.99 mol NH3

Next, we can use the ratio from the balanced chemical equation to find the moles of hydrogen:

3 mol H2 / 2 mol NH3 = x mol H2 / 7.99 mol NH3

Cross-multiplying and solving for x, we get:

x = (3/2) * 7.99 mol H2 / 1 mol NH3

= 11.99 mol H2

= 12 mol H2 (Approximately)

Therefore, approximately 12 moles of hydrogen are needed to produce 136 g of ammonia.

Learn more about number of moles of hydrogen here:https://brainly.com/question/7698993

#SPJ1

Answer:

I think is 6

hope this answer be right

Answer:

6

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

you would put -142 in the x place

-0.2(-142+223)

-0.2(81)=-16.2

Answer:

83 1/4 sq ft

Step-by-step explanation:

let x = length or width of two identical unknown sides

2(9) + 2x = 36 1/2

18 + 2x = 36 1/2

2x = 18 1/2

x = 37/2 ÷ 2 = 37/4 or 9 1/4

therefore, multiply 9 by 9 1/4

Area is:  9/1 x 37/4 = 333/4 = 83 1/4

-185/100 = -1.85

a) -1.08 this number id greater than -1.85

b) 190/100 = 1.9 this number is greater than -1.85

c) -35/20 = -1.75 this number is greater than -1.85

All these numbers are greater than -185/100

Ordered pair (3, 1) and (3, 2) causes the relation to not be a function; The same x-value has different y-values.

How do you find out if a set of ordered pairs is a function or not?

For a set of ordered pairs to be a function, there must not be any two points that have the same first elements. This means that, the

x-coordinates must not repeat for any two given points.

According to the given question:

Given ordered pairs of a relation are

(0, 0.5), (0.5, 1), (3, 1), (1, 6), (3, 2)

Domain set of the relation= {0, 0.5, 1, 3}

Co-Domain set of the relation = {0.5, 1, 2, 6}

Clearly the image of the x-coordinate 3 is not unique.

Hence, (3, 1) and (3, 2); The same x-value has different y-values.

To know more about graph and ordered pairs visit

https://brainly.com/question/12716270

#SPJ1

True. the interpretation of the slope is different in a multiple linear regression model as compared to a simple linear regression model.

The slope and intercept of a line reveal the steepness of the line and the location in which it intersects an axis. The slope and intercept of the logistic relationship of the two variables can be utilized to get the average change rate. The ratio of a change in the variable y to the rise in the x component is known as the the line's slope.

Y = a + bX, where X seems to be the mediating variable and Y is the response variable, is the equation of a linear regression line. A is the intersection (the result of y for x = 0), and b is the line's slope.

To learn more about slope visit:

https://brainly.com/question/29690915

#SPJ4

Answer: 14 gallons of gasoline.

Step-by-step explanation:

given data:

25(x + 3) = 424

where x is the number of gallon of gasoline needed to purchase.

Solution.

25(x + 3) = 424

first we open the bracket

25x + 75 = 424

collect like terms

25x = 424 – 75

25x = 349

divide both sides by 25

25x/25 = 349/25

x = 13.96

x = 14

mathew needs to get 14 gallons of gasoline.