The new mean of the data-set, with the observation 2 removed, is given as follows:
12.67 attempts.
How to obtain the mean of a data-set?The mean of a data-set is obtained as the sum of all observations in the data-set divided by the number of observations.
Removing the observation 2, the data-set is given as follows:
11, 11, 11, 12, 13, 13, 14, 14, 15.
The sum of all these observations is given as follows:
3 x 11 + 12 + 2 x 13 + 2 x 14 + 15 = 114.
There are nine observations, hence the mean of these observations is given as follows:
114/9 = 12.67.
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What is the difference between mixture and compound Class 9?.
The main difference between a mixture and a compound is that a mixture is a physical combination of substances while a compound is a chemical combination of elements.
In chemistry, a mixture is a combination of two or more substances that are not chemically combined and can be easily separated by physical means. The properties of a mixture depend on the properties of the individual substances that make it up, and the substances retain their original properties. Examples of mixtures include air, salt water, and a bowl of fruit.
A compound, on the other hand, is a substance that is made up of two or more elements chemically combined in a fixed ratio. The properties of a compound are different from those of the individual elements that make it up. The atoms in a compound are chemically bonded together and cannot be easily separated by physical means. Examples of compounds include water (H₂O), table salt (NaCl) and sugar (C₁₁H₂₂O₁₁).
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How do you write 149600000000 in standard form?.
To write 149600000000 in standard form, we need to move the decimal point to the left or right so that there is only one non-zero digit to the left of the decimal point. 149600000000 in standard form would be written as 1.496 x 10^11.
To arrive at this form, we move the decimal point 11 places to the left (since there are 11 zeros in 149600000000) and add the power of 10 notation, indicating that we moved the decimal point 11 places to the left. The number 1.496 is the coefficient and 11 is the exponent. This way, we get 1.496 x 10^11 which is the standard form of 149600000000.
Standard form, also known as scientific notation, is a way of expressing a number in a compact and efficient manner. It is typically used for very large or very small numbers. To write a number in standard form, the decimal point is moved so that there is only one non-zero digit to the left of the decimal point. The number of places the decimal point is moved is indicated by a power of 10
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Recall that two angles are complementary if the sum of their measures is 90°
Find the measures of two complementary angles if one angle is 5° more than four times the other angle.
Answer:
I = 17deg, II = 73deg
Step-by-step explanation:
Let's say first angle is x, and then respectively, the second angle is 4*x + 5.
Their sum is 90 degrees, so:
x + (4*x+5) = 90
5x + 5 = 90
5x = 85 | :5
x = 17 degrees ==> first angle
4*x+5 = 73 degrees ==> second angle
How will a graphing calculator help a student understand mathematics better?.
The study comes to the additional conclusion that both interventions—traditional methods of instruction and the use of graphing calculators—improve students' abilities to compute mathematically.
Typically, graphing calculators are used by high school students or students in higher classes. In addition, if you are enrolled in one of these levels, you are already familiar with the higher-levelJust by looking at a few numerical characters, mathematical puzzles can become complex, and not all books have the answers to all of those puzzles. However, using a graphing calculator will allow you to avoid this circumstance. When taking a math test, one problem we frequently experience is not knowing whether the response is right or wrong. because even a small mistake can change the entire result. For that to be known, the data and graphical lines must match precisely.To learn more about graphing calculators here
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Akio draws a graph to record the distance he rides on a long bike ride. What is the slope of the line for the first two hours? What is the slope of the line for all five hours? What does the slope mean in this situation?
Answer:
Below
Step-by-step explanation:
To find the slope of a line, we use the formula:
slope = (change in y-coordinates) / (change in x-coordinates)
In this case, if Akio recorded the distance he rode on his bike ride in hours, the slope of the line for the first two hours would be the change in the y-coordinates (distance) divided by the change in the x-coordinates (time) between those two points.
To find the slope of the line for all five hours, we will need to know the specific coordinates of all five points, otherwise, it's impossible to calculate the slope.
The slope of a line represents the rate of change in the y-coordinates (distance) per unit of change in the x-coordinates (time). In this situation, the slope represents Akio's speed, since the change in distance is divided by the change in time. A positive slope indicates an increase in distance over time, which means Akio is getting faster, whereas a negative slope indicates a decrease in distance over time, which means Akio is getting slower.
It's worth noting that a slope of zero would mean that there is no change in distance over time, which would mean that Akio isn't moving.
In the continental United States the ratio of states the border an ocean to states that do not boarder an ocean is 7:9. How many states are landlocked and do not boarder an ocean.
There are 21 states landlocked and 27 states do not border an ocean.
What is Ratio?A ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.
Since there are 48 states in the continental United States, some of which are on the border of an ocean and some of which are not.
According to the question,
The ratio of the states having the border to the ocean and not having the border to the ocean = 7 : 9
Let the states having the border to the ocean = 7x
The states do not have a border to the ocean = 9x
Thus, 7x + 9x = 48
⇒ 16x = 48
⇒ x = 3
So, the states do not have a border to the ocean = 7 × 3 = 21
And, the states do not have a border to the ocean = 9 × 3 = 27
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To rent a certain meeting room, a college charges a reservation fee of $41 and an additional fee of $7.30 per hour. The history club wants to spend less than $92.10 on renting the meeting room. What are the possible amounts of time for which they could rent the meeting room? Use for the number of hours the meeting room is rented, and solve your inequality for .
Answer:
Step-by-step explanation:
first we subtract 92.1 from 41 which gives us 51.1 now we want to see how many hours we can keep the room for while staying under 91.1 so we divide the value of 51.1(as we have to first pay the fee of $41) by 7.3 as that is the amount they are charging per hour(51.1/7.3) which gives us 7 so we can rent the roof for 7 hours max or just for 1,2,3,4,5 or 6 hours
Can someone show how to do this step by step with a graph?
Plot the lines and shade in the regions on the same x-y plane to find the solution to the system of inequalities 4x+6y ≤ 24 and x + 5y ≤ 10 fall under the mixed shaded region in the graph.
What is the linear inequalities?
Linear inequalities are mathematical expressions that describe a relationship between two variables that is linear in nature. The most common form of a linear inequality is of the form ax + by < c, where a, b, and c are constants and x and y are variables.
Yes, this system of two linear inequalities can be represented graphically on the x-y plane by plotting the solutions to each inequality. The steps are as follows:
Replace the equation with the slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept. For example, the first equation can be rearranged as:4x + 6y <= 24
=> -6y <= -4x + 24
=> y >= (4/6)x + 4
=> y = (4/6)x + 4
Plot the line corresponding to each equation. You can use the slope-intercept form of each equation to get the slope and y-intercept of each line, and then plot the line using the slope and y-intercept. For example, the line for the first equation is y = (4/6)x + 4, which is the graph of a line with slope 4/6 and y-intercept 4. The line for the second equation is y = (1/5)x + 2, which is the graph of a line with slope 1/5 and y-intercept 2.Determine the side of the line to shade in for each inequality. If the inequality is less than or equal to, shade in the region below the line. If the inequality is greater than or equal to, shade in the region above the line.The solution to the system of inequalities is the intersection of the shaded regions, which is the region where both inequalities are simultaneously satisfied. This represents the set of all possible (x, y) pairs that satisfy both equations.Plot the lines and shade in the regions on the same x-y plane to find the solution to the system of inequalities.To learn more about linear inequalities, Visit
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How to graph piecewise functions
Step by step
Please help, been stuck on thus question for 2 days
Answer:
see attached
Step-by-step explanation:
You want to graph the piecewise defined function ...
f(x) = 2x+9 for x < -3; 2x-2 for x > 4
GraphYou normally graph a line by finding (at least) two points on the line and drawing a line through them to make the graph. Often, it is convenient to start with the y-intercept. Here, it is convenient to start with the end point of the domain on which the line is defined. Additional points can be found by making use of the slope: rise 2 for each run of 1 to the right.
For x < -3, the value of y at x=-3 is ...
y = 2(-3) +9 = 3
So, the point (-3, 3) will appear on the graph. This point is not actually in the domain, which is x < -3, so will be graphed as an open circle. The line goes down and to the left from there with a slope of 2.
For x > 4, the value of y at x=4 is ...
y = 2(4) -2 = 6
So, the point (4, 6) will appear on the graph as an open circle, because x=4 is not actually in the domain of the function. The line will go up to the right from there with a slope of 2.
See the attachment for a finished graph.
Sylvester and Lin go to the amusement park. Sylvester plays 5 rounds of mini golf and takes 4 turns in the batting cages for $60. Lin plays 3 rounds of mini golf and takes 6 turns in the batting cages for $45. Use two equations to find the price for each activity. Enter your answers in the boxes.
Answer:
Mini golf costs: $10.00 per round.
Batting cages cost: $2.50 each turn.
Step-by-step explanation:
Let g= rounds of golf
Let b = batting cage
Sylvester
5g+4b = 60
Lin
3g +6b = 45
We have two equations and two unknowns
5g+4b = 60
3g +6b = 45
Divide the second equation by 3
3/3g +6/3b = 45/3
q+2b = 15
Multiply this equation by -2
-2q -4b= -30
Add this to the first equation
5g+4b = 60
-2q -4b = -30
3q = 30
Divide by 3
3g/3 = 30/3
g = 10
A game of mingolf is 10 dollars
Now we need to find b
q+2b = 15
10 +26 =15
Subtract 10
10-10+2b =15-10
26=5
Divide by 2
2b/2 =5/2
b=25
A turn in the batting cage is 2.50
to the nearest tenth
[tex] \sqrt{50} [/tex]
The rounded number to the nearest tenth is 7.1
How to round to the nearest tenth?
Examine the hundredth number to determine the decimal number's nearest tenth. Add one to the tenth value if the number is more than 5. The tenth place value should remain unchanged if it is less than 5, but all subsequent numbers should be eliminated.
√50 = 7.071
hundredth number is 7 greater than 5
Add one to the tenth value if the number is more than 5
all subsequent numbers should be eliminated.
Thus, the rounded number to the nearest tenth is 7.1
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Compare the following sets of data for June 2006 and June 2005.
Canadian Housing Prices by City ($)
June 2006
June 2005
Canadian City
Vancouver
Victoria
Calgary
Edmonton
Regina
Saskatoon
Ottawa
Toronto
Montreal
Fredericton
Saint John
Halifax
Sources: MLS and Remax
Mean:
1. Find the measures of central tendency for each. State any conclusions found.
Median:
Mode:
508 435
538 913
367 033
254 240
137 022
160 548
260 458
358 035
222 879
136 371
127 586
201 316
Conclusions:
June 2006
June 2006
422 843
469 588
245 803
199 409
132 054
139 728
254 725
345 065
210 740
134 334
125 455
184 853
June 2006
June 2005
June 2005
June 2005
The Mean for June 2006 and 2005 is $345,909 and $335,977 respectively. The median for June 2006 and 2005 is $254,000 and $139,000 respectively, there's no mode in this question.
Explain mean, median, mode briefly?In statistics, the mean, mode, and median are three measures of central tendency that describe a set of numerical data.
The mean is the average of a set of numbers, calculated by adding up all the values and dividing by the number of values. For example, if a set of data contains the values {1, 2, 3, 4, 5}, the mean is (1 + 2 + 3 + 4 + 5) / 5 = 3.
The mode is the value that appears most frequently in a set of data. For example, if a set of data contains the values {1, 2, 2, 3, 4, 4, 4, 5}, the mode is 4, because it appears three times, which is more than any other value.
The median is the middle value in a set of data when it is ordered in ascending or descending order. For example, if a set of data contains the values {1, 2, 3, 4, 5}, the median is 3, because it is the middle value. If there is an even number of values, then the median is the average of the two middle values.
It is important to note that different sets of data may have different measures of central tendency, and sometimes none of these measures may be appropriate.
Measures of central tendency are used to summarize and describe a set of data. The most common measures of central tendency are the mean, median, and mode.
1. Mean:
• Mean for June 2006: (508+435+538+913+367+033+254+240+137+022+160+548+260+458+358+035+222+879+136+371+127+586+201+316)/22 = $345,909
• Mean for June 2005: (422+843+469+588+245+803+199+409+132+054+139+728+254+725+345+065+210+740+134+334+125+455+184+853)/22 = $335,977
2. Median:
• Median for June 2006: Median of ordered data is the value in the middle of the data set, It is the 11th value in order set. we can see that it is $254,000
• Median for June 2005: Median of ordered data is the value in the middle of the data set, It is the 11th value in order set. we can see that it is $139,000
3. Mode:
• Mode for June 2006: There is no mode, because no value is repeated.
• Mode for June 2005: There is no mode, because no value is repeated.
Conclusions:
• The mean housing price in June 2006 is higher than the mean housing price in June
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How do you satisfy an equation?.
To satisfied the solution of an equation after substituting the value of the variable left hand side value should equals to right hand side value.
As given in the question,
To satisfied the solution of the given equation we need to follow the following steps :
After simplifying the equation get the value of variable.Now. substitute the value of the variable in the left hand side .The value of the left hand side after calculation should be equal to right hand side.If left hand side equals to right hand side the solution satisfied the given equation.Therefore, to satisfied the solution of the given equation left hand side value should be equal to right hand side.
The above question is incomplete , the complete question is :
How do you satisfy the solution of an equation?
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21. The marks obtained by the students of class VII in the class test of Mathematics are given in the table below. Find the average marks. Marks obtained No. of students 10 3 20 6 30 10 40 7 50 4
Answer:
The average marks = 31
Step-by-step explanation:
We know that the average can be measured using mean
Mean = Sum of observations / no of observations
In the given data no of observations = sum of frequencies
= 3+6+10+7+4
=30
Sum of observations = No of marks * frequency 1 + No of marks * frequency 2+...
= 10*3 +20*6+30*10+40*7+50*4
= 930
Mean = 930/30
= 31
Stuck, anyone can help?
Answer:
3.2
Step-by-step explanation:
......................
What is the slope of the line 5y =- 3x 10?.
The slope of the line 5y = -3x + 10 is -3/5.
To find the slope of the line represented by the equation 5y = -3x + 10, we can first put the equation in slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept.
In this case, we can start by dividing both sides of the equation by 5:
y = (-3/5)x + 2
where (-3/5) is the slope of the line, and 2 is the y-intercept. Therefore, the slope of the line 5y = -3x + 10 is -3/5.
Alternatively, you could have directly found the slope by looking at the x and y coefficients, in this case the slope is -3/5
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The answer is in the photo for you to answer.
Answer :
HU length = 24
If UVW is Isosceles triangle then UGH is Isosceles
UV=UW = 132
Then,
HU = UG = 24
Help is very much appreciated need this by tmr.
A triangle has vertices A (2,-3), B (-2,1) and C (1,2). Find the midpoint of the side AB.
the mid point of the side AB is (0,-1).
What is triangle?
Three edges and three vertices define a triangle as a polygon. One of geometry's fundamental shapes is this one. The designation "triangle ABC" refers to a triangle containing the vertices A, B, and C. When three points are non-collinear in Euclidean geometry, they each produce a distinct triangle and plane. A triangle's area is the region that each of its sides touches. A triangle's area varies from one triangle to another depending on the size of its sides and internal angles. Triangle area is measured in square units like m2, cm2, and in2.
A = (2,-3)
B = (-2,1)
Mid point will be 1+3/2, -2-2/2
Mid point is (0,-1)
Hence the midpoint of the side AB is (0,-10).
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Which i the following equation i the bet model for a line of fit for the data? Y=-1. 34x21. 5
The equation which is the best model for a line of best fit for the data is y = ½ x – 1. (Option B)
A line of best fit refers to a straight line which minimizes the distance between it and some data. It expresses a relationship in a scatter plot of different data points. It is an educated guess about where a linear equation which may fall in a set of data plotted on a scatter plot. It is an output of regression analysis and is used as a prediction tool.
The equation of the line can be determined using slope intercept form of the line which is y = mx + b where m is the slope and b is the y intercept. From the given graph, two points which lie on the line of best fit can be used to determine the slope. Let consider two points (2, 0) and (0, -1). Hence
m = (-1 – 0)/(0 – 2) = -1/-2 = ½
The value of y intercept is -1 (when x = 0)
Hence, the equation is:
y = ½ x - 1
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what the square root of 25
Answer:
Step-by-step explanation:
It's obvious 5x5=25
Therefore, the square root of 25 is 5.
STOP GIVING ME FALSE ANSWER , AND PLEASE HURRY! THIS IS A TEST!
Are 1 4 and 2 8 equivalent fractions?.
Yes, 1/4 and 2/8 equivalent fractions.
Mathematical fractions that have the same denominator but different numerators are called equivalent fractions. As an illustration, since 2/4 and 3/6 both equal 1, they are both comparable fractions. The total is divided into fractions. When referring to identical components of the total, equivalent fractions are utilized.
By multiplying the numerator and denominator by the same integer, it is possible to determine the equivalent fraction of each fraction. In spite of differences in appearance, equivalent fractions signify the same value. For instance, if you take one piece of cake, divide it into two equal pieces, and then eat one of them, you will have consumed half of the cake.
= 1/4 = 2/8
= 1/4 = 1/4
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Correct Question:
Are 1/4 and 2/8 equivalent fractions?.
which of the following subtractions is closest to 809-392
a=800-300
b=800-400
c850-400
d=900-300
Is the inverse of a square root function a quadratic function?.
The inverse of a square root function looks like a half parabola which resembles the shape same as that of a quadratic function graph but we can not be certain about it.
Square root function graphs are usually curved. The curve above is, in reality, half of a parabola that is laying on its side. It represents half of the parabola that would result from graphing the equation y² = x.
f(x) = ax² + bx + c, where a, b, and c are integers and an is not equal to zero, is a quadratic function. A parabola is the shape of a quadratic function's graph.
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asap need this
will name brainliest
Therefore , light of the fact that the three equations equal x2 + 6x - 16, they all represent the same function.
Equation: What is it?In a mathematical formula, the equal symbol (=) is used to denote that the statements are equivalent. It is demonstrated that many quantitative variables are comparable using mathematical equations, which are statements of reality. The equal sign, for instance, separates the numbers 12 and b + 6 into 2 halves within the equation y + 6 = 12. It is possible to calculate how many expression words each edge of a symbol represents. The meaning of a symbol usually contradicts itself.
Here,
It is important to understand that the function Corey wrote is:
=>y = (x + 8)(x - 2) (x - 2)
=> y = x² - 2x + 8x - 16
=> y = x² + 6x - 16
Kimberly spelled out y = x + 6x - 16
Joshua spelled out (x + 3)² - 25.
=> (x + 3)(x + 3) - 25
=> x² + 3x + 3x + 9 - 25
=> x² + 6x - 16
In light of the fact that the three equations equal x2 + 6x - 16, they all represent the same function.
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What is the gradient of the line y =- 10?.
The gradient of the line is 0.
Slope of lineA line's slope is defined as the ratio of the change in the y-coordinate to the change in the x-coordinate. Both the net change in the y-coordinate and the net change in the x-coordinate are denoted by the symbols y and x, respectively. where "m" represents the slope of a line. So, tan is the slope of a line.
According to the question
Given the equation of a line is y = -10.
The general equation of the line is y = mx + c
This is a horizontal line because, regardless of the value of x, the value of y is always less than 10. A horizontal line by definition has a slope of:
m = 0
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Victoria had $200 in her account at the end of one year. At the first of each subsequent year she deposits $15 into the account and earns 2% interest on the new balance, compounded annually. Which recursive formula represents the total amount of money in Victoria’s account at the end of the nth year?
The recursive formula represents the total amount of money in Victoria’s account at the end of the nth year
What is the recursive formula?Generally, The recursive formula representing the total amount of money in Victoria's account at the end of the nth year is:
A(n) = A(n-1) + 15 + 0.02 * A(n-1)
where
A(n) is the total amount of money in Victoria's account at the end of the nth year, A(n-1) is the total amount of money in Victoria's account at the end of the (n-1)th year, 15 is the amount deposited at the beginning of each year, and 0.02 is the annual interest rate (expressed as a decimal).To get the first value of A(n) we can use the initial condition
A(1) = 200 + 15 + 0.02 * 200
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Suppose that the cost to ship an envelope is a function of its weight. For any
envelope up to 1 ounce, the charge is a stamp that costs $0.47. For an envelope over
1 ounce and up to 2 ounces, the charge is $0.68. Finally, for an envelope over 2
ounces and up to 3 ounces, the charge is $0.89. What are the practical domain and
range of this function?
The set of -values that are appropriate in the given situation is known as the practical domain. Solution: F (x) = 2 x is the function's formula.
What is a practical domain of a function?You are not accounting for or measuring any rainfall that occurred prior to the storm's onset, thus there is a total of 0 inches of precipitation at that time. Six and a half hours are spent in the storm.
Example :
Miami, Florida, experiences heavy rainfall due to a powerful hurricane. A 2 inch per hour downpour is occurring. In 6 and a half hours, the storm is over. The total amount of rain that has fallen throughout time should be modeled mathematically. The function is plotted. For this situation, identify the practical domain. The set of -values that are appropriate in the given situation is known as the practical domain.
Solution: Since there was no rain measured or included before the storm began, the function is as follows:
f(x)= 2x
There was 0 inches of rain at the moment the storm began. Six and a half hours are spent in the storm. f(6.5) = 2(6.5) = 13 inches of rain had been recorded at 6.5 hours, or so. It follows in words what the domain and range are:
Domain :
All real numbers between and including 0 and 6.5 hours.
Range :
All real numbers between and including 0 and 1.3 inches.
Domain and range can be expressed more easily with the help of some helpful notation, such as the following:
Domain { x∈R,0≤ x ≤ 6.5} [0,6.5]
Range { x∈R,0≤ x ≤ 6.13 [0,13].
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After Carl ha ued 1 yard of cable how much cable will he have left explain how you found your anwer
Carl has 2 5/36 yard cable, more than 1 yard, not specified left.
What is yard ?
A yard is a unit of length measurement in the U.S. customary system and the imperial system. It is equal to 3 feet or 36 inches. The symbol for yard is "yd". It is mostly used in the United States and the United Kingdom for measuring small lengths, such as in construction, textiles, and landscaping.
Carl has three lengths of cable, 5/6 yard long, 1/4 yard long and 2/3 yard long. The total length of the cable that Carl has is:
5/6 + 1/4 + 2/3 = (30 + 15 + 40) / 36 = 85 / 36 = 2 5/36 yard
To check whether he has at least one yard of cable or not, we need to compare the total length of the cable he has (2 5/36 yard) with 1 yard. Since 2 5/36 is greater than 1, it means he has more than 1 yard of cable. So, he will have at least 1 yard of cable left after using some of it.
Carl has 2 5/36 yard cable, more than 1 yard, not specified left.
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Carl has three lengths of wire, each measuring 5/6 yards, 1/4 yards, and 2/3 yards. The wire that Carl has measures a total of:
5/6 + 1/4 + 2/3 = (30 + 15 + 40) / 36 = 85 / 36 = 2 5/36 yard
We need to compare the entire length of the cable he has (2 5/36 yard) with 1 yard to see if he has at least one yard of cable or not. He has more than one yard of cable since 2 5/36 is larger than 1, which is greater than 1. After using some of the wire, he will still have at least 1 yard of it.
What are the ratios of trigonometry?.
The ratios of the sides of a right triangle are called trigonometric ratios. Three common trigonometric ratios are the sine (sin), cosine (cos), and tangent (tan).
In arithmetic, the trigonometric functions (also known as circular features, perspective features, or goniometric functions) are actual features that relate an angle of a proper-angled triangle to ratios of side lengths. they may be extensively utilized in all sciences which might be associated with geometry, such as navigation, strong mechanics, celestial mechanics, geodesy, and lots of others. they are a few of the handiest periodic features, and as such are also extensively used for analyzing periodic phenomena through Fourier analysis.
The trigonometric functions most extensively used in cutting-edge mathematics are the sine, the cosine, and the tangent. Their reciprocals are respectively the cosecant, the secant, and the cotangent, which are less used. each of these six trigonometric capabilities has a corresponding inverse function and an analog most of the hyperbolic features.
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