Let x be an even number. Then, x = 2k for some integer k. The negative of x, -x, is equal to -2k, which is also an even number. Thus, the additive inverse of an even number is an even number.
An even number is any number that can be divided by 2 without any remainder, meaning that it can be written in the form x = 2k for some integer k. The additive inverse, or negative, of an even number, x, is -x. By definition, this is equal to -2k. As -2k can still be divided by 2 without any remainder, it is also an even number.
This can also be understood by looking at the positive and negative sides of the number line. If x is an even number, then it is two units away from 0. Therefore, -x is also two units away from 0, which means it is an even number. This shows that the additive inverse of an even number is an even number.
To prove this, we can look at a specific example. Let x = 8. Then, 8 = 2x4. The negative of 8, -8, is equal to -2x4, which is still an even number. Thus, this proves that the additive inverse of an even number is an even number.
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3.8m² of concrete is made into the shape of a cylinder.
The base has radius 0.5 metres.
Work out the height of the cylinder.
0.5 m
(2 Marks)
Answer:
4.84 m
Step-by-step explanation:
V = πr²h
h = V/πr² = (3.8 m³) / π(0.5m)² = 4.84 m
when some population elements are excluded from the process of selecting the sample
Specific individuals in a population are unfairly left out of a study, which is known as exclusion bias. When researchers design a study that inadequately represents specific segments of the community, undercoverage bias emerges.
when a sample is unrepresentative of the population as a whole?When a sample is not chosen that accurately represents the full population of data, a statistical error known as sampling error arises. As a result, the sample's findings do not accurately reflect the outcomes that the complete population would produce.
What is the procedure for choosing a sample from the population called as?When a sample is chosen from a population based on the idea of randomization, this practise is known as probability sampling.
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In 1903, Crayola's very first box of crayons had 8 colors. Today there are 120 Crayola crayon colors to choose from. find the percent change.
Answer:
Step-by-step explanation:
To find the percent change, we can use the formula:
percent change = (final value - initial value) / initial value * 100
In this case, the initial value is 8 and the final value is 120. Plugging in the values, we get:
percent change = (120 - 8) / 8 * 100 = 1,400%
So, the percent change in the number of Crayola crayon colors is 1,400%. This represents a significant increase from the initial 8 colors in 1903.
the number of faculty for a variety of private colleges that offer only bachelor's degrees is listed below. 285 125 120 128 135 138 155 226 389 116 154 310 204 206 162 165 135 77 248 225 264 318 176 221 210 93 176 276 What is the class width for a frequency distribution with 9 classes? The class width is_____
The class width for a frequency distribution with 9 classes is 35.
What is range of the data?The difference between the highest and lowest values for a given data collection is the range in statistics. In statistics, we must put the given values, set of data, or set of observations in ascending order in order to determine the range. That indicates that you should start by writing the observations from lowest to highest value. The formula must now be used to determine the range of observations.
The range of the data is given as:
Range = highest value - lowest value
Range = 389 - 77
Range = 312
The class width for a frequency distribution with 9 classes is:
Class width = 312 / 9 = approx. 35.
Hence, the class width for a frequency distribution with 9 classes is 35.
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QUICK WILL GIVE BRAINLIEST PLUS 100 POINTS
Enter the missing numbers in the boxes to complete the table of equivalent ratios.
Time (min) Distance (km)
6
6 18
24
15
Answer:
Time (min) Distance (km)
6 9
12 18
24 36
15 45
Step-by-step explanation:
The table shows equivalent ratios between time in minutes and distance in kilometers. An equivalent ratio means that the ratio of time to distance stays the same, even though the numbers themselves change.
For example, in the first row, the ratio of time to distance is 6 minutes to 9 kilometers. In the second row, the ratio of time to distance is 12 minutes to 18 kilometers. Despite the change in numbers, the ratio of time to distance remains the same. This is why these ratios are considered equivalent.
Slect all that apply
The rational numbers in this problem are given by these following options:
A, B, C, D, E, G, I, K, L, O.
What are rational and irrational numbers?Rational numbers are the whole numbers plus decimals that can be represented by fractions, involving both positive and negative numbers.
The set of irrational numbers is composed by numbers that cannot be represented by fractions, such as non-exact roots, which are non-terminating and non-repeating decimal numbers.
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Find: (6m^5+3-m^3-4m)-(-m^5+2m^3-4m+6)
The simplification of the algebraic expression results in 7m^5 - 3m^3 - 3.
What are algebraic expressions?Algebraic expressions are mathematical expressions that consist of integers, variables, and arithmetic operations. To simplify algebraic expressions, some mathematical properties are being used such as distributive property in opening the brackets and additional property in adding like terms together.
Given that:
= (6m^5+3-m^3-4m)-(-m^5+2m^3-4m+6)
Apply distributive property
= 6m^5 + m^5 - m^3 -2m^3 - 4m + 4m + 3 - 6
Add like terms
= 7m^5 - 3m^3 - 3
Therefore, we can conclude that the simplification of the algebraic expression results in 7m^5 - 3m^3 - 3.
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Can someone help answer this equation
Answer:
0.707106781187
Step-by-step explanation:
I recommend using the website desmos
The total cost of producing a type of tractor is given by C(x)=11000−60x+0.1x2 C ( x ) = 11000 − 60 x + 0.1 x 2 , where x is the number of tractors produced. How many tractors should be produced to incur minimum cost?
The number of tractors that should be produced to incur the minimum cost will be 300.
What are the maxima and minima of a function?For the maximum value of the function if f''(x) < 0 and for the minimum value of the function if f''(x) > 0.
The maximum and minimum value of the function is at f'(x) = 0.
The function is given below.
C(x) = 11000 − 60x + 0.1x²
Differentiate the function with respect to x, then we have
C'(x) = 0
(d/dx)(11000 − 60x + 0.1x²) = 0
− 60 + 0.2x = 0
0.2x = 60
x = 300
The number of tractors that should be produced to incur the minimum cost will be 300.
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The angles in a straight line are X degree, 3x degree and 6x degree. find the measure of each angle.
Answer:
"18", "54", and "108"
Step-by-step explanation:
Angles:A straight line has an angle of 180 degrees. It can be seen as "half a circle", which has an angle of... 360 degrees, and since it's half, it's just 180 degrees.
Now we're also given the angles that compose the straight line (x, 3x, and 6x), and by adding these angles together, we should get the angle of the straight line. So that means that: [tex]x+3x+6x=180[/tex]
Now from here we can just combine them all into one term:
[tex]10x=180[/tex]
Now divide both sides by 10:
[tex]x=18[/tex]
Our angles are equal to "x", "3x", "6x", and to calculate their value, we just plug in "18" as x giving us: "18", "3(18)", "6(18)" which simplifies to the angles: "18", "54", "108"
Let x represent the number of water bottles and y represent
the number of pairs of socks that Malia buys.
Use the graph to determine if Malia can buy 75 water bottles
and 100 pairs of socks. Explain.
Malia can't buy 75 water bottles and 100 pairs of socks because it is not a solution to the system.
System of Inequalities:
The term "system of inequalities" refers to a collection of two or more disparities in one or more variables. When a problem demands a variety of solutions and those solutions must satisfy many constraints, systems of inequalities are used.
Now in the given question,
Here we have a graph of inequalities, and we just need to see if the pair (75, 100) is a solution.
The solutions of the system are all the points in the intersection of the two shaded areas (in this case are all the points in the green area)
Now, clearly the point (75, 100) is not a solution
Even if you evaluate that in the first inequality:
x + y ≥ 200
we get:
75 + 100 ≥ 200
175 ≥ 200
which is false.
So no, Malia can't buy 75 water bottles and 100 pairs of socks.
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if you can run 1 1/2 miles in 15 minutes how long would it take to run 1 mile
Answer:
Step-by-step explanation:
Solve 4x - 5 = 19.
O A. x=8
O B. x=6
O C. x=3.5
O D. x=10
PLEASE HELP WILL GIVE 100 POINTS AND BRAINLYEST
Answer:
rational number, 2/9, 22/100=11/50, rational, no fraction equivalent, perfect square, non-perfect square
Step-by-step explanation:
How many hours do I need to work to make 35$
How many hours do I need to work to make $94
How many hours do I need to work to make $540
Explain:
Step-by-step explanation:
Is some of the problem missing? impossible to answer unless we know how much they make an hour
In an orchestra, the ratio of trombones to violas is 1 to 3.
Answer:
3 trombones
Step-by-step explanation:
9 divided by three is 3.
show that the cosine rule shown below can be solved can be rearranged to give..
Using trigonometry, solving the provided question, we can say that here, [tex]2ab cos A = \frac{b^{2} + c^{2} - a^{2}}{2bc}[/tex] and [tex]\theta = 37[/tex]
What is Trigonometry?The relationship between triangle side lengths and angles is examined in the branch of mathematics known as trigonometry. The application of geometry in astronomical study gave rise to the area's first appearance in the Hellenistic era, roughly in the third century BC. Exact approaches mathematics focuses on certain trigonometric functions and how they could be applied to calculations. In trigonometry, there are six well-known trigonometric functions. They are known by their various names and acronyms: sine, cosine, tangent, cotangent, secant, and cosecant (csc). Trigonometry is the study of the properties of triangles, particularly of right triangles. The features of all geometric figures are studied in geometry.
where the sides b and c are forced together, trapping the angle A in (1). There are three options if you wish to rearrange the formula. You can get the answer for B, C, or A.
Reverse the cosine rule provided:
[tex]A^{2} = b^{2} + c^{2}- 2abcos A[/tex]
[tex]2ab cos A = \frac{b^{2} + c^{2} - a^{2}}{2bc}[/tex]
Replace A = θ with a = 17, b = 14, and c = 26,
then simplify:
[tex]Cos \theta = \frac{14^{20} + 26^{2} - 17^{2}}{2\times 14 \times 26}[/tex]
[tex]Cos \theta = \frac{583}{728}[/tex]
[tex]\theta = cos^{-1}(\frac{583}{728})[/tex]
[tex]\theta = 37[/tex]°
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Complete question -
Let X be a random variable whose distribution is Normal, with a mean of 100 and a standard deviation of 10. The proportion of observations above 115 is equal to the proportion below what value? Use the fact that the normal distribution is symmetric about the mean.
The value for which the proportion of observations below it is equal to the proportion of observations above 115 is 85.
The normal distribution, also known as the Gaussian distribution or the bell curve, is a continuous probability distribution that describes the distribution of many real-world phenomena such as height, weight, IQ scores, and financial returns. It is a symmetric distribution with a bell-shaped curve that is centered on the mean and characterized by its mean and standard deviation.
Since the normal distribution is symmetric about the mean, the proportion of observations above 115 is equal to the proportion of observations below 100 - (115 - 100) = 85.
So, the value for which the proportion of observations below it is equal to the proportion of observations above 115 is 85.
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the mean is an inappropriate measure of central tendency when the distribution is severely skewed because
The mean is sensitive to outliers and will not accurately represent the center of the data if the distribution is significantly skewed.
The mean is a measure of central tendency that is calculated by adding up all values in a dataset and dividing by the number of values. It is often used as a measure of average since it takes into account all values in the dataset. However, it is an inappropriate measure of central tendency when the data distribution is severely skewed. A skewed distribution is one in which the data is not distributed evenly around the mean, and the data is either concentrated in the lower or higher end of the range. Since the mean is sensitive to outliers, it will be greatly affected by these values and not accurately represent the center of the data. In this case, it is more appropriate to use the median as a measure of central tendency since it is not affected by outliers. The median is the middle value of a dataset when the data is sorted from smallest to largest and is a better representation of the true center of the data in a skewed distribution.
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Solve for x
12 + x = 15
Answer: x = 3
Step-by-step explanation: just isolate the variable x
So subtract 12 on both sides of the equation and you are left with x is equal to 3
Hope this helped
What is 40,753 in expanded form
Answer:
40,000 + 700 + 50 + 3
Step-by-step explanation:
Expanded form requires you to separate the numbers in power of ten
How many adults binge drink four times per month?
A. 1 in 10
B. 1 in 6
C. 1 in 4
D. 1 in 8
Answer:
C.
Step-by-step explanation:
Its more likely to happen
ana opened a bank account with $1000 that earns interest, compounded continuously, at an annual rate of r
After 1 year of time period, Ana would have $1051.7 in her account, including interest.
Ana opened a bank account with $1000 that earns interest, compounded continuously, at an annual rate of r. To calculate the amount of money in the account after t years, we can use the formula:
[tex]A = P * e^{(rt)}[/tex]
where A is the amount in the account after t years, P is the initial deposit (in this case, $1000), r is the annual interest rate, and e is the mathematical constant approximately equal to 2.718.
For example, if the interest rate is 5% (r = 0.05), after 1 year, the amount in the account would be:
[tex]A = \$1000 * e^{(0.05 * 1)} = \$1000 * 1.0517[/tex]
[tex]A = \$1051.7[/tex]
So, after 1 year, Ana would have $1051.7 in her account, including interest. The higher the interest rate and the longer the time period, the more money Ana would have in her account due to the compounding effect.
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Use the parabola tool to graph the quadratic function f(x)=x2+10x+24. Graph the parabola by first plotting its vertex and then plotting a second point on the parabola
By using tool, graph of the quadratic function f (x) = x² + 10x + 24 is shown in figure.
And, Vertex = (- 5, - 1)
A point on graph = (- 6, 0)
What is Quadratic equation?An algebraic equation with the second degree of the variable is called an Quadratic equation.
Given that;
The quadratic function is,
⇒ f (x) = x² + 10x + 24
Now, By using tool we can draw the quadratic function f (x) = x² + 10x + 24 is shown in figure.
And, By figure of the quadratic function f (x) = x² + 10x + 24, we get;
Vertex = (- 5, - 1)
A point on graph = (- 6, 0)
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Answer:
(-5, -1) & (-6, 0)
Step-by-step explanation:
Just finished the test and this was correct. Hope this was helpful!!
The 149 heights of males from a data set of body measurements vary from a low of 154 cm to a high of 196.9 cm. Use the range rule of thumb to estimate the standard deviations and compare the result to the standard deviation of 8.04 cm calculated using the 149 heights. What does the result suggest about the accuracy of estimates of s found using the range rule of thumb? Assume the estimate is accurate if it is within 1.4 cm.
Therefore , the solution of the given problem of standard deviation comes out to be the range rule of thumb is only an approximation and does not take into account the shape of the distribution .
The standard deviation is defined.Variance is a measure of variation used in statistics. To calculate the average variance between the data and the mean, use the algorithm below. In opposition to other numerical measures of variability, it incorporates all data points into calculations by comparing each data point's value to the mean. Among the differences are unintentional errors, irrational expectations, and changing market or economic conditions.
Here,
According to the range rule of thumb, the range of the data set is roughly four times the standard deviation. Therefore, we can estimate the standard deviation by dividing the range by 4:
range = 196.9 - 154 = 42.9
estimated standard deviation = range / 4 = 10.725
Comparing this estimate to the actual standard deviation of 8.04 cm calculated using the 149 heights, we see that the estimate is off by about 2.685 cm.
This suggests that the estimate obtained using the range rule of thumb is not very accurate in this case, as it is outside the 1.4 cm threshold for accuracy.
This is not surprising, as the range rule of thumb is only an approximation and does not take into account the shape of the distribution or the sample size.
Therefore , the solution of the given problem of standard deviation comes out to be the range rule of thumb is only an approximation and does not take into account the shape of the distribution or the sample size.
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An oil change at instant auto service is regularly $35. Mr.oliver has a coupon for 25% off.He wants to know the sales price of an oil change
Answer:
$26.25
Step-by-step explanation:
25% of 35 can be found by multiplying .25 x 35 to get 8.75
the coupon will reduce the regular price of $35 by 8.75 to produce the new price of $26.25
An ice cream factory makes 150 quarts of ice cream in 5 hours how many quarts could be made in 36 hours what’s was the rate per day
1080 quarts can be made in 36 hours.
The rate per day is 30 quarts.
What is a unit rate?It is the quantity of an amount of something at a rate of one of another quantity.
In 2 hours, a man can walk for 6 miles
In 1 hour, a man will walk for 3 miles.
We have,
150 quarts of icecream = 5 hours
This can be written as,
5 hours = 150 quarts
Divide both sides by 5.
1 hour = 30 quarts
Multiplying 36 on both sides.
36 hours = 36 x 30 quarts
36 hours = 1080 quarts
Thus,
1080 quarts can be made in 36 hours.
30 quarts per day.
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At a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is 44
The probability of not ordering nonalcoholic beverages is 66.
What is the probability?Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Probability = Number of favourable outcomes / Number of samples
Given that at a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is 44%.
The probability of not ordering the beverages will be:-
P = 100% - 44%
P = 66%
Therefore, the probability of not ordering nonalcoholic beverages is 66.
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GDrag expressions and value to represent the situation and the unknown in the diagram
Expressions using words: 2/5 as the sum of 4 and 8.
Expression with using numbers: 2/5 x(8+4)
Value = 12 2/5.
What is Fraction?The fractional bar is a horizontal bar that divides the numerator and denominator of every fraction into these two halves.
The number of parts into which the whole has been divided is shown by the denominator. It is positioned in the fraction's lower portion, below the fractional bar.How many sections of the fraction are displayed or chosen is shown in the numerator. It is positioned above the fractional bar in the upper portion of the fraction.Given:
First, the Expressions using words
2/5 of the product of 8 and 4.
4 times as mush as 2/5 of 8.
2/5 as the sum of 4 and 8.
Now, Expression with using numbers
2/5 + (8+4)
2/5 x (8 x 4)
4 x (2/5 x 8)
2/5 x(8+4)
Values are: 2 2/5, 4 2/5, 32 2/5, 12 2/5.
Now, the Answers is
Expressions using words: 2/5 as the sum of 4 and 8.
Expression with using numbers: 2/5 x(8+4)
Value = 12 2/5.
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Problem Statement: Create a function named tclip that determines the intersection of a line (solution of a given linear equation) with a clipping triangleT having vertices(0,0),(1,0)and(0,1).The function declaration should have the form function [count, list] =tclip(a,b,c)where the line in question is ordinarily the solution set of the linear equation ax+by=c.The value of the variable count returned should be −2 if the equation ax+by=c has no solutions(e.g.0x+0y=1). −1if the equation ax+by=c is solved by all values of x and y(0x+0y=0)0 if the solutions of ax+by=c do not intersectT(e.g.0x+1y=7)1 if the solutions of ax+by=cintersect T in one point (e.g.1x+1y=0)2 if the solutions of ax+by=c intersect T in more than one point(e.g.∣x−1y=0)The variable 1.st, which reports the distinct endpoints of the intersection, should be a2x0 empty array (empty list of 2-vectors) if count is−2,−1 or 0, 2×1 array (a single column vector)-the unique point of intersection-if count is 12×2 array (list of two column vectors)-the endpoints of the intersection- if count is 2.
The equation that determines the intersection of line with a clipping triangle is ax + by + c = 0 [1]. The solution has been obtained by using functions.
What is a function?
A function is described as a relationship between a group of inputs with one output each. A function is, to put it simply, a relationship between inputs in which each input is connected to exactly one output. Every function has a domain and a codomain, or range. A function is typically represented by the notation f(x), where x represents the input. A function is typically shown as y = f(x).
The equation ax + by + c = 0 [1] represents the line in question. A list of pairs of coordinates for each intersection point and the number of intersections (count) should be returned by the function (list).
A list of items can be sent to the function count list, which will return the total number of objects in the list. The function returns the number of objects in the specified list after accepting an array or list of objects.
Hence, the equation that determines the intersection of line with a clipping triangle is ax + by + c = 0 [1].
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