Monique pagou a compra de três camisetas com uma nota de R$50,00. Cada camiseta custou R$10,75. Quanto ela recebeu de troco?​

Answer:

Step-by-step explanation:

Solve 3-4 and (1⁄2)-2

3 - 4, 4 is greater than 3, so the result is negative (-1)

3 - 4 = -1

-----------------

1/2 is equal to 0.5, also here 2 is larger and we will have a negative result (-1.5 or -3/2)

1/2 - 2 =

0.5 - 2 = -1.5 or -3/2

Answer:

B. 12

Step-by-step explanation:

Edges are the straight lines

the slope of the line above is -2

In standard nomenclature, a normally distributed dataset is represented as \(N(µ, σ^2)\), where µ is the mean and \(σ^2\)is the variance (square of the standard deviation).

A normally distributed phenomenon using standard nomenclature can be described as follows:

A dataset is said to be normally distributed if it follows a bell-shaped curve, which is symmetrical around the mean (µ) and characterized by its standard deviation (σ). In standard nomenclature, a normally distributed dataset is represented as \(N(µ, σ^2)\), where µ is the mean and \(σ^2\)is the variance (square of the standard deviation).

For example, if we consider the heights of adult males in a large population, we may observe that the distribution is normally distributed with a mean height (µ) of 175 cm and a standard deviation (σ) of 10 cm. In this case, the nomenclature for this normally distributed phenomenon would be N(175, 100), as the variance is \(10^2 = 100\).

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Answer:

Step-by-step explanation:

The parenthesis can cancel because the lack of anything you can do in them, so that will leave you with 7m + 3 + 7m + 6

Next step is to add like numbers, you should start by adding 7m + 7m, which would be 14m.

Next would be to add 3 + 6, which is nine.

To end this equation, simply put 14m + 9

There is no one-number answer because we do not know what m is. So the equation 14m + 9 is the final answer.

According to the information, the vertex is at the highest point of the parabola, and the curve opens upwards because the coefficient of x^2 is positive.

To graph the equation y = x^2 + 2x + 8, we can first find the vertex and the roots of the equation. The vertex of the parabola is located at the point (-b/2a, f(-b/2a)), where a and b are the coefficients of x^2 and x respectively, and f(x) is the function we are graphing.

In this case, a = 1 and b = 2, so the x-coordinate of the vertex is -b/2a = -1, and the y-coordinate is f(-1) = (-1)^2 + 2(-1) + 8 = 7. So the vertex is at the point (-1, 7).

To find the roots of the equation, we can solve for x when y = 0:

0 = x^2 + 2x + 8

Using the quadratic formula, we get:

x = (-b ± sqrt(b^2 - 4ac)) / 2a

Plugging in a = 1, b = 2, and c = 8, we get:

x = (-2 ± sqrt(2^2 - 4(1)(8))) / 2(1)

x = (-2 ± sqrt(-28)) / 2

x = -1 ± 3i

So the roots are complex numbers: -1 + 3i and -1 - 3i.

To plot the graph, we can choose some values of x and calculate the corresponding values of y using the equation y = x^2 + 2x + 8. Here are some points we can use:

(-3, 5): This is a point to the left of the vertex.

(-2, 4): This is the x-coordinate of the vertex, so the y-coordinate is 7.

(-1, 7): This is the vertex.

(0, 8): This is a point to the right of the vertex.

(1, 11): This is another point to the right of the vertex.

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Given,

PD = 8 and DC = 9

Required

The length of line BC.

Here, PB and PD are the ardius of the circle. By the definition of circle, the measure of all radius is equal.

So, PB = PD = 8.

The tangent is always perpendicular to the radius at the point of tanjency.

By the pythagoras theorem,

Hence, the measure of BC is 15 units.

The set that is resulting of the union operation between set A and it's complementary A' is given as follows:

U = {x:6≤ x ≤40, x is a positive whole number}.

The union operation of two sets is a mathematical operation that combines all the elements from two sets into a single set, without any duplicates. The union of two sets A and B is denoted as A ∪ B, and is defined as the set that contains all elements that are in at least one of the sets A and B.

The set A is given as follows:

A = {1, 2, 3, 4, 5}.

The complement of it's set is the set containing all the elements that are in the universe set and are not in A.

The union operation between a set and it's complement is always the universe set, hence it is given as follows:

U = {x:6≤ x ≤40, x is a positive whole number}.

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Answer:

d. 2

Step-by-step explanation:

This is an exponential growth function so b must me > 1.

2 is the only one greater than 1.

Answer

D

Step-by-step explanation:

The recursive and the explicit formulas are f(n) = 3f(n - 1), where f(1) = 250 and f(n) = 250(3)ⁿ‐¹

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

This means that

Initial, a = 250 bacterial cultures.

Rate = 3

So, the recursive formulas is

f(n) = 3f(n - 1), where f(1) = 250

For the explicit formula, we have

f(n) = 250(3)ⁿ‐¹

Hence, the recursive and the explicit formulas are f(n) = 3f(n - 1), where f(1) = 250 and f(n) = 250(3)ⁿ‐¹

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Answer:

x=-37

Step-by-step explanation:

First, rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation:

                    2*x-31-(3*(x+2))=0

(2x - 31) -  3 • (x + 2)  = 0

Pulling out like terms

3.1     Pull out like factors :

  -x - 37  =   -1 • (x + 37)

Equation at the end of step

 -x - 37  = 0

Solving a Single Variable Equation:

4.1      Solve  :    -x-37 = 0

Add  37  to both sides of the equation :

                     -x = 37

Multiply both sides of the equation by (-1) :  x = -37

Answer:  The surface area is reduced by a factor of 16/25

Step-by-step explanation:  The area is the square measurements. So squaring the factor of the linear measurement change is the quick way is to determine the factor for the area.

The longer way-- if you had to prove your conclusion:

Compute the area of each side, add all the five sides of the prisms and find the ratio.

The area of the large prism is 500 square units.

The area of the smaller prism is 320 square units

320/500 = 32/50,  reduce again  16/25

Answer:

B. 16/25

Step-by-step explanation:

Just took the Pre-Test on Edg (2020-2021)!

Answer and Step-by-step explanation:

The lines are parallel, so that means that some angles are congruent to each other.

On the other side of 80 degrees, it would be 100 degrees (180 - 80 = 100).

Using the interior angles theorem, this means that the angle in the triangle and 50 added up are equal to 100. So, the angle C is equal to 50.

Now, because of the triangle angles sum theorem, the angles have to add up to 180, so we do 180 - 80 - 50, which is 50 (for angle A).

So, since the two angles have 50 degrees, the triangle is an isosceles triangle.

Hope this helps! (That is the explanation btw)

#teamtrees #WAP (Water And Plant)

The critical path is the path with the longest duration, which in this case is A -> B -> D -> E with a duration of 11 days.

To determine the critical path of the project, we need to find the longest path of activities that must be completed in order to finish the project on time. This is done by calculating the earliest start time (ES) and earliest finish time (EF) for each activity.

Starting with activity A, ES = 0 and EF = 4. Activity B can start immediately after A is complete, so ES = 4 and EF = 7. Activity C can start after A is complete, so ES = 4 and EF = 6. Activity D can start after B is complete, so ES = 7 and EF = 9. Finally, activity E can start after C and D are complete, so ES = 9 and EF = 11.

The variance for each activity is also given, which allows us to calculate the standard deviation and determine the probability of completing the project on time. The critical path is the path with the longest duration, which in this case is A -> B -> D -> E with a duration of 11 days.

Using the expected durations and variances, we can calculate the standard deviation of the critical path. This information can be used to determine the probability of completing the project on time.

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Answer:

The price would be 7.20

Step-by-step explanation:

Answer: Travis studied Spanish for 2.5 hours.

Step-by-step explanation:

1. First, we have to make our equation. Since it DID state that he studied x hours EACH for Spanish, English, and Social Studies, we could just make that 3x.

So,

3x + 1.5 + 2.25= 11.25

3x + 3.75= 11.25

-3.75 -3.75

3x/3=7.50/3

x=2.5

Answer:

f'(x) = -6/x³

Step-by-step explanation:

We are given;

f(x) = 3/x²

Using quotient rule, we can write as;

f(x) = g(x)/h(x)

To find the derivative, from quotient rule, we can write;

f'(x) = [(h(x)*g'(x)) - (g(x)*h'(x))]/(h(x))²

g'(x) = 0

h'(x) = 2x

Thus;

f'(x) = [(x²*0) - (3*2x)]/(x²)²

f'(x) = -6x/x⁴ = -6/x³

f'(x) = -6/x³

4(5x3) + 2(4x3) = 60 + 24 = 84 square units

Answer:

i think its c

Step-by-step explanation:

because 4 x 6 is 24 and 4x4 is 16 so it got to be 4

Two figures are known as similar figures if there the corresponding angles are equal and the corresponding sider is in ratio. The correct option is C.

Two figures are known as similar figures if there the corresponding angles are equal and the corresponding sider is in ratio. It is denoted by the symbol "~".

Given that the two prisms are similar, therefore, the ratio of their sides will be equal. Thus, we can write the ratio as,

Ratio = x/1 = 16/4 = 24/6

Now, for the value of x, the ratio can be solved as,

x/1 = 16/4

x = 4

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The confidence interval is approximately (0.0814, 0.1386), meaning that with 98.5% confidence, the true proportion of new cars with manufacturing defects is between 8.14% and 13.86%. Since the cars were randomly selected, this confidence interval provides a reliable estimate of the overall defect rate in the entire population of new cars.

To determine the confidence interval at a significance level of 0.015, we need to calculate the standard error of the proportion and use it to find the margin of error.
First, we calculate the standard error of the proportion using the formula:
SE = sqrt[(p * (1 - p)) / n]
Where p is the proportion of defective cars in the population, which is given as 0.08, n is the sample size, which is 300, and sqrt denotes the square root.
SE = sqrt[(0.08 * (1 - 0.08)) / 300] = 0.019
Next, we find the margin of error by multiplying the standard error by the z-value corresponding to a significance level of 0.015. From a standard normal distribution table, we find that the z-value is -2.17 (since the significance level is on the left tail).
Margin of error = 2.17 * 0.019 = 0.041
Finally, we can construct the confidence interval by adding and subtracting the margin of error from the sample proportion:
CI = (p-hat - ME, p-hat + ME)
CI = (33/300 - 0.041, 33/300 + 0.041)
CI = (0.066, 0.154)
Therefore, we can say with 98.5% confidence that the true proportion of defective cars in the population lies between 0.066 and 0.154.

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Answer:

-45

Step-by-step explanation:

math

-19 + 16 = -3

-3 + (-42) = -45

According to the theory of comparative advantage, if the United States and Mexico increase their trade with each other, the two countries will experience an increase in their standards of living.

The theory of comparative advantage suggests that countries can benefit from specializing in the production of goods and services in which they have a lower opportunity cost compared to other countries. By focusing on producing what they are relatively more efficient at, countries can achieve higher levels of productivity and output.

When countries engage in international trade based on comparative advantage, they can access a wider range of goods and services at lower costs. This leads to increased efficiency, greater market competition, and access to a larger consumer base. As a result, both the United States and Mexico can enjoy the advantages of trade, such as lower prices, increased variety, and access to new markets.

By leveraging their respective comparative advantages and engaging in trade, the United States and Mexico can enhance their productivity, economic growth, and overall standards of living. The specialization and exchange of goods and services allow countries to allocate resources more efficiently, leading to higher living standards for their populations.

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The nurse should also provide emotional support and address any concerns or questions the client may have regarding the procedure.

Based on the information provided, a client admitted for treatment of a malignant melanoma of the upper leg without metastasis may require a wide local excision procedure.

This procedure involves removing the melanoma along with a margin of normal tissue to ensure complete removal of the cancer cells.

The specific margin size may vary depending on the depth and size of the melanoma. It is important for the nurse to plan for preoperative preparation, including educating the client about the procedure, obtaining informed consent, and ensuring that necessary preoperative tests are completed.

The nurse should also provide emotional support and address any concerns or questions the client may have regarding the procedure.

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Answer: The answer is B

Step-by-step explanation: Hope this helps xd

The given information is as follows:A random sample of 150 teachers in an​ inner-city school district found that​ 72% of them had volunteered time to a local charitable cause within the past 12 months.

The formula for calculating the standard error of sample proportion is given as:$$Standard\(\ error=\frac{\sqrt{pq}}{n}$$\)where:p = proportion of success in the sampleq = proportion of failure in the samplen = sample sizeGiven:Sample proportion, p = 72% or 0.72Sample size, n = 150

The proportion of failure in the sample can be calculated as:q = 1 - p= 1 - 0.72= 0.28Substituting the known values in the above formula, we get:\($$Standard \ error=\frac{\sqrt{pq}}{n}$$$$=\frac{\sqrt{0.72(0.28)}}{150}$$$$=0.0372$$\)Rounding off to the nearest thousandth, we get the standard error of sample proportion as 0.037

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The required sum of the positive integers x and y with the given condition of product of x and y as  square and cube is equal to 85.

Two positive integers are x and y.

Product of 360 and x is a square.

Product of 360 and y is a cube.

Prime factors of 360 equals to ,

360 = 2³ × 3² × 5

To make a product of 360 and x as square ,

Multiply by 2 and 5 and 3 is already a perfect square.

x = 2 × 5

 = 10

360 × 10 = 3600

Now , to make product of 360 and y as cube.

Multiply by 3  and 5² and 2 is already a perfect cube.

y = 3 × 5²

   = 75

360 × 75 = 27000

Sum of the values of x and y is equal to,

x + y

= 10 + 75

= 85

Therefore, the sum of the positive integers x and y are 85.

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Answer:

first row: x + 4 = 7

second row: x= 3

Step-by-step explanation:

Since this is a visual representation of an equality in math, and there are 7 circles (the circles represent 1) on one side and one triangle and 3 circles on the other, you set your equation to x+4=7. By subtracting 7-4, you get x=3. Hope this helps!

Answer: 11.31

Step-by-step explanation:

The correct option is c) Easier interpretation. One of the main advantages of simple models is their ease of interpretation. Simple models tend to have fewer parameters and less complex mathematical equations, making it easier to understand and interpret how the model is making predictions.

This interpretability can be valuable in various domains, such as medicine, finance, or legal systems, where it is important to have transparent and understandable decision-making processes.

Complex models, on the other hand, often involve intricate relationships and numerous parameters, which can make it challenging to comprehend the underlying reasoning behind their predictions. While complex models can sometimes offer higher accuracy or make more detailed predictions, they often sacrifice interpretability in the process.

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A curvilinear term in mathematics is "Consisting of, bounded by, or characterized by a curved line." However, the definition of a quadratic is a second-order polynomial equation in a single variable \(0= ax^{2}+bx+c\) with

\(a\neq 0\). A quadratic is a curvilinear term according to my definition, but a function like \($x^{4}$\) would also fit the definition of curvilinear. So, your answer is

False, a quadratic and a curvilinear term are not the same.

False, a curvilinear term is more broad, but quadratics have specific restrictions.