a. Realiza las siguiente operaciones Paso a paso

a)5-6+ (-9)-(-5)+1=
b) -2-7+ (-4)+6-1=
c) 8-(-2)+7-(-8)-6+3=
d) 1-(-5)-16+4+ (-12)+ (-3)-7=

One fourth of the values are less than or equal to 4.2, and three fourths are above 4.2.

The second quartile of a dataset, also known as the median, is a measure of central tendency that divides the dataset into two equal halves. It is the value that separates the lower 50% of the data from the upper 50% of the data.

The correct answer is C. One fourth of the values are less than or equal to 4.2, and three fourths are above 4.2.

The second quartile, also known as the median, is the value that separates the lower 50% of the data from the upper 50% of the data. So, if the second quartile of a data set is 4.2, it means that 50% of the values in the data set are below 4.2, and 50% of the values are above 4.2.

Since the first quartile is the value that separates the lower 25% of the data from the upper 75% of the data, we know that one fourth of the values must be less than or equal to the second quartile (4.2). Similarly, since the third quartile is the value that separates the lower 75% of the data from the upper 25% of the data, we know that three fourths of the values must be above the second quartile (4.2).

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The second quartile of a data set is 4.2. Which statement about the data values is true?

A. The data value 2.5 will lie below the second quartile.

B. The data value 4.7 will lie below the second quartile.

C. One fourth of the values are less than or equal to 4.2, and three fourths are above 4.2.

D. One fourth of the values are less than or equal to 4.2, and half of the values are above 4.2.

E. One fourth of the values are above 4.2, and half of the values are less than or equal to 4.2.

(-5y³ + 3y³ - 3y³) + (5x³ + x³) + ( -2y² + 3y²)  is the combined terms of the given expression.

A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.

An expression is a mathematical proof of the equality of two mathematical expressions.

A statement expressing the equality of two mathematical expressions is known as an equation.

Given terms are

⇒  -5y³ + 3y³ + 5x³ - 3y³ + x³ -2y²  + 3y²

Combine all y³ terms

-(5y³ + 3y³ -  3y³)

Combine all  x³ terms

(5x³ + x³)

Combine all y² terms

( -2y² + 3y²)

Add all together (-5y³ + 3y³ - 3y³) + (5x³ + x³) + ( -2y² + 3y²)  is the combined likely terms.

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Answer:

48/2

Step-by-step explanation:

you can just multiply it by the denominator to make any number an improper fraction

Answer:

88

Step-by-step explanation:

Use the following formula

Average=Sum/Count

89+91+84=264

264/3

88

Answer:

3(360⁰)-335⁰

=1080⁰-335⁰

=745⁰ is a positive angle.

The conversion of 5 c to pints, represented as pt will give 2.5 pt.

The conversion rate of 1 pint to cup is at the rate of 1 pint to 2 cups. So when we have 5 cups for conversion to pints, we will have to multiply 5 cups by 1 pint and then divide the result by 2.

When this is done, the resulting figure will be 2.5 pt. In the same vein, the conversion of 2.5 pt to cup will give 5 cups. So, for the number 8 question above, we can arrive at 2.5 pt as the answer for the conversion of 5 cups to pints.

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Answer;

x = 7

Step-by-step explanation:

3(x - 1) - 4(5 - x) = 2(6 + x)

3x - 3 -20 + 4x = 12 + 2x

7x - 23 = 12 + 2x

7x - 2x = 23 + 12

5x = 35

x = 35/5

x = 7

The present value of $13,000 discounted back 5 years at a semi-annual compound rate of 9% can be calculated by the formula:PV = FV / (1 + r/m)^(m*t)Here, PV stands for Present Value FV stands for Future Valuer stands for the interest rate (9%)m is the number of times the interest is compounded (semi-annually, so m = 2)t is the number of years (5)

After substituting the values in the formula, we get:PV = 13,000 / (1 + 0.045)^10PV = 13,000 / 1.55709768854PV = $8,349.58. We can use the concept of present value (PV) and future value (FV) to solve this question. When the cash flow is considered at different points of time, the money's value changes with the time value of money. The time value of money takes into consideration the amount of interest that could be earned on the sum of money if invested. Present value (PV) is a mathematical concept that represents the current worth of a future sum of money, taking into account the time value of money and the given interest rate. PV is calculated by using a discount rate that is determined by the interest rate and the length of time between the present and future payment dates. Future value (FV) is a mathematical concept that represents the future worth of a present sum of money, taking into account the time value of money and the given interest rate. FV is calculated by using a compound interest rate that is determined by the interest rate and the length of time between the present and future payment dates. To calculate the present value of $13,000 discounted back 5 years at a semi-annual compound rate of 9%, we can use the formula PV = FV / (1 + r/m)^(m*t), where PV is the present value, FV is the future value, r is the interest rate, m is the number of times the interest is compounded per year, and t is the number of years. In this case, we know that FV is $13,000, r is 9%, m is 2 (since it is compounded semi-annually), and t is 5. After substituting these values into the formula, we get PV = $8,349.58. Therefore, the present value of $13,000 discounted back 5 years at a semi-annual compound rate of 9% is $8,349.58.

Therefore, the present value of $13,000 discounted back 5 years at a semi-annual compound rate of 9% is $8,349.58.

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Answer:

x=19,0

y=0,-38/3

Step-by-step explanation:

Answer:

x = 4, y = -10

Step-by-step explanation:

-x - 6 - y = 0

-x - y = 6

2x - 3y = 38, -x - y =6

2x - 3y = 38

2x = 3y + 38

Divide both sides by 2

x = 1/2(3y+38)

Multiple 1/2 times 3y + 38

x= 3/2 y + 19

-(3/2y + 19) -y =6

-3/2y - 19 - y = 6

-5/2y -19 = 6

-5/2y = 25

y = -10

x = 3/2(-10) + y

x = -15 + 19

x = 4

x = 4, y = -10

Answer:

Multiply the denominator of the fractional part by the whole number, and add the result to the numerator.

For example, suppose you want to convert the mixed number to an improper fraction. First, multiply 3 by 5 and add 2:

(3 · 5) + 2 = 17

Use this result as your numerator, and place it over the denominator you already have.

Place this result over the denominator:

This method works for all mixed numbers. Furthermore, if you start with the fractional part reduced, the answer will also be reduced.

Step-by-step explanation:

The equation is 128 + 2x = 180.

The angles that are in the same position on two parallel lines intersected by a transversal line on the parallel lines.

Corresponding angles are equal.

We have,

The sum of the same-side interior angles between two parallel lines is supplementary

This means,

128 + 2x = 180

2x = 180 - 128

2x = 52

x = 26

Thus,

The value of x is 26.

The equation is 128 + 2x = 180.

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The value of x is

1. x= -37/48

2. x=0

3. x = 33/4

4.  x= -20/7

A mathematical statement consisting of an equal symbol between two algebraic expressions that have the same value.

1.  6(8 x + 6) + = - 1

   48x + 36 = -1

 x= -37/48

2.  9x/7 + 6 = 6

9x/7= 6-6

9x/7 =0

x= 0*7/9

x= 0

3. 2x/11 (11 - 7) = 6

    x * 4= 6*11/2

    4x= 33

    x = 33/4

4. 11x/4 (4 - 2) = 9x + 10

 11x/4 * 2 = 9x +10

11/2*x = 9x +10

-7/2x = 10

x= -20/7

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=36

A ) = 36

the rest are to little or much

A chart that describes a company's formal structure is called an Organizational chart.

An organizational chart is a visual representation of an organization's structure. It illustrates how individual employees, teams, and tasks fit into the broader framework. It is also known as an organization chart or org chart. This type of chart depicts reporting relationships, responsibilities, and roles within an organization in a hierarchical arrangement.

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The ratio of students who wish they had x-ray vision to all students: 2:9

The ratio of students who wish for flight to all students: 3:1

The ratio of students who wish for flight to those who wish for invisibility: 6:1

1. The ratio of students who wish they had x-ray vision to all students: 2:9

This means that out of a group of students, there are 2 students who wish they had x-ray vision for every 9 students in total.

2. The ratio of students who wish for flight to all students: 2:3

This ratio indicates that out of a group of students, there are 2 students who wish for the ability to fly for every 3 students in total.

3. The ratio of students who wish for flight to those who wish for invisibility: 1:6

This ratio compares the number of students who wish for flight to the number of students who wish for invisibility. It states that for every student who wishes for flight, there are 6 students who wish for invisibility.

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The system of equations are:

c + b = 1285

170c + 480b = 477,300

Two equations would be derived from the information provided in the question. The equations are known as simultaneous equations. The equations would have to be solved together in order to determine the required values.

The methods that can be used to solve simultaneous equations are:

The form of the equations is:

Number of catastrophic plan sold + number of bronze plans sold = total plans sold

Cost of the catastrophic plan x number of the plan sold) + (number of bronze plan sold x cost of the plan) = total cost of the plans

c + b = 1285

170c + 480b = 477,300

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Answer:

d)the observations expressed in standard units

Step-by-step explanation:

The average will change and hence, consequently, so will the deviations from the average and also the standard deviation. so, the only option left is d)

Answer:

x=6 and x=5.1

Step-by-step explanation:

We have the next given expression:

(3y+5)(3y+4)

Simplify the expression:

(3y+5)(3y+4) = 3y*3y+*3y*4+*5*3y+5*4

= 9y²+12y+15y+20

=9y²+27y+20

Hence, the expression is a trinomial.

It is degree is given by the largest exponent number.

Then, the degree of the polynomial is 2.

Answer:

(3x2 - 4y4) • (9x4 + 12x2y4 + 16y8

The program that has to be modified serves as an example of how Python can generate random integers.

The random module will be used to create the random numbers from 1 to 10.

The modified program, which uses comments to clarify the program's lines, is as follows:

Here, the random module is imported.

import arbitrary

This produces random numbers.

A = Random.Random (1,10)

This produces a new random number.

B = Random.Random (1,10)

#This increases both integers by one.

response = a * b

This shows the program's outcome.

print the following: str(a) + "* " + str(b) + " = " + str(answer)

The sum of the two random numbers will be printed at the program's conclusion.

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Answer:a

Step-by-step explanation: move c 6 to the right and then up 6

Answer:

A

Step-by-step explanation:

(x, y) → (x + 6, y + 6)

C:

(-4, -2) → (x + 6, y + 6)

(-4, -2) → (-4 + 6, -2 + 6)

(-4, -2) → (2, 4)

C': (2, 4)

(2, 4) is located where A is.

\( \large\begin{gathered} {\underline{\boxed{ \rm {\red{Volume \: \: of \: \: cylinder \: = \: \pi \: {r}^{2} \: h }}}}}\end{gathered}\)

⇥Volume of the cylinder = π r² h

⇥Volume of the cylinder = 3.14 × 36 × 16

⇥Volume of the cylinder = 113.04 × 16

⇥Volume of the cylinder = 1808.64

Hence , the volume of cylinder is 1808.64 cm²

n=4 is the degree maclurins polynomial is required so that the error in the approximation is less than 0.001.

Given that,

The expression is

e⁰⁵=1+0.5+0.5²/2!+0.5³/3!+.....

We have to find what degree maclurins polynomial is required so that the error in the approximation is less than 0.001.

We know that,

An expression that consists of variables, constants, and exponents that is combined using mathematical operations like addition, subtraction, multiplication, and division is referred to as a polynomial.

√e=1.64872

Pₙ( x)= e⁰⁵=1+0.5+0.5²/2!+0.5³/3!+.....

P₂=1+0.5+0.5²/2!=1.625

P₃= P₂+0.5³/3!=1.6458

P₄= P₃+0.5⁴/4!=1.648404

√e - P₄ = -0.0003158

Therefore, n=4 is the degree maclurins polynomial is required so that the error in the approximation is less than 0.001.

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Answer: 96%

Step-by-step explanation:

Morgan's average grade was 92% after the third test.

Lets say all the tests were out of 100 to help you understand.

We can say that she got 92 out of 100 on all three tests.

Her total point would be 92 * 3 which would be 276, out of 300 points available.

Now she takes her fourth test and she wants an average of 93

Out of 100, if she gets a score of X, her total point after the fourth test would be 276 + X out of 400 points available.

so the percentage of 276 + X / 400 should be 93%.

( 276 + X / 400 ) * 100% = 93%

multiply 400 on each side,

( 276 + X ) * 100 % = 93 * 400 %

now divide each side by 100

276 + X = 93 * 4

93 * 4 = 372

Subtract each side by 276

X = 96

So she needs to get a 96 out of 100 or higher, which is 96%.

The maximum height of the ball after its third bounce is equal to 3.568 feet.

In this question we are aware that the maximum height reached by the ball decreases linearly after each bounce. To determine that height, we must take advantage of the recursive formula described in statement:

n = 0

a₀ = 10 ft

n = 1

a₁ = 0.85 · 10 - 1

a₁ = 8.5 - 1

a₁ = 7.5 ft

n = 2

a₂ = 0.85 · 7.5 - 1

a₂ = 5.375 ft

n = 3

a₃ = 0.85 · 5.375 - 1

a₃ = 3.568 ft

The maximum height of the ball after its third bounce is equal to 3.568 feet.

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The first one is 10 feet.
The second one is 6.141 feet.

Step-by-step explanation: Edge 2023

Answer:

  13, 15

Step-by-step explanation:

Let x represent the smaller of the two integers. Then the larger is x+2. The required relation is ...

  x² = 154 +(x +2) . . . . . . the smaller squared is 154 more than the larger

  x² -x = 156 . . . . . . . . . . subtract x

  x² -x +1/4 = 156.25 . . . complete the square

  (x -1/2) = √156.25 = 12.5 . . . . take the square root

  x = 13 . . . . . add 1/2

The two integers are 13 and 15.

__

Check

  13² -15 = 169 -15 = 154 . . . as required

Answer:

v = 80 mph

Step-by-step explanation:

Given that,

The distance from Wakefield to London is 180 miles.

The train travels this distance in 2 hours 15 minutes.

We need to find the average speed of the train. The average speed of the train is equal to the total distance covered divided by the time taken.

\(v=\dfrac{d}{t}\\\\v=\dfrac{180\ miles}{(2+\dfrac{15}{60})\ h}\\\\v=80\ mph\)

So, the required average speed of the train is 80 mph.

Total 205 students should be polled so that we can estimate p to within 0.09 using a 99% confidence interval.

We have given that

Estimate of the proportion of students

= p

Confidence interval = 99%

As we know that the margin of error for the confidence interval is ,

MOE = Z ×√(p × (1-p)) / n

Where Z is z-score for

p --> estimate proportion confidence interval

n --> sample size

margin of error = 0 .09,

so we can set the equation as,

0.09 = Z×√(p×(1-p)) / n

Using the Z-table , the Z value for a 99% confidence interval is 2.575..

we will use p = 0.5 (since we are not given any information about value of p).

plugging all known values in above formula we get, 0.09 = 2.575√(0.5(0.5))/n

=> 0.0349 = √0.25/ n

=>0.00122 = 0.25/n

=> n = 204.6489

Since we get a decimal and we need our answer in number of students to sample, we round up to n = 205.

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