The required solution would be h = 3Vr²/3.14 for h, where V is the volume of a cone.
What is the volume of a cone?The volume of a cone is defined as the amount of space occupied by a cone in a three-dimensional plane.
The volume of the cone (V ) = 1/3πhr²
We have been given that the volume of a cone is (1/3)3.14r²h
We have to determine the solution for h
As per the given question, we have
⇒ V = (1/3)3.14r²h
Multiply by 3 into the above equation,
⇒ 3V = 3.14r²h
Divided by 3.14 into both sides
⇒ 3V/3.14 = r²h
⇒ h = 3Vr²/3.14
Therefore, the required solution would be h = 3Vr²/3.14.
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The population of a city has increased by 27% since it was last measured. If the current population is 63,500 , what was the previous population?
Answer:
50000
Step-by-step explanation:
We know it increase 27% since it was last measured
100% + 27% = 127%
We have to find 1%
We take 63500 divided by 127 = 500
500 times 27 = 13500
Now we have to take 63500 and subtract by 13500 to find the previous population.
63500 - 13500 = 50000
So, the previous population is 50000
What is the inverse of a quadratic called?
Answer: Square Root Function
The inverse of a quadratic function is a square root function because
What are the 3 types of real numbers?
Three types of numbers fall under the heading of "real numbers," which we will discuss in a moment. Real numbers include all types of numbers, including whole, rational, and irrational numbers.
What is Real number?A real number is a quantity that may be represented mathematically by an endless decimal expansion. In contrast to the counting-derived natural numbers 1, 2, 3,..., real numbers are used to quantify constantly altering quantities such as size and time. Rational and irrational numbers are both included in real numbers. Real numbers include both irrational and rational numbers such as 3, 22/7, and integers such as (-2, 0, 1), fractions such as (1/2), and decimal numbers such as (1/2).
whole = 0,1,2,3,4,5,6,7,8,9...….
rational = 1,2,3,3/4,5/6,...…
irrational = [tex]\sqrt{8}[/tex], etc
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Which is a list of all the roots of
x3 −x2 =4−4x?
F {−1,2,−2} H {−1,2i,−2i}
G {1,2,−2} J {1,2i,−2i}
Answer:
J
Step-by-step explanation:
[tex]x^3-x^2+4x-4=0 \\ \\ x^2(x-1)+4(x-1)=0 \\ \\ (x^2+4)(x-1)=0 \\ \\ (x-2i)(x+2i)(x-1)=0 \\ \\ x=1, 2i, -2i[/tex]
Solve this system of equations by graphing. First graph the equations, and then type the solution.
The graph of the equation given is mentioned below.
What is plot point in graph ?
Whenever we draw a point on our grid, we'll call it "plotting a point." The grid is really called a "graph" and the points we plot are called "coordinates." These are really locations on a plane -- we're just finding and labeling them.
Equation given,
y = 3/5x - 1 ----eq(i)
y = 2/5x -----eq(ii)
Now, for this two equation we infinite points for real numbers.
Now, take some points to plot the graph.
First for the eq(i)
Put x = 0, so y = -1
Put x = 5, so y = 2
Points for eq(i) is (0, -1) and (5, 2)
Now, for eq(ii)
Put x = 0, so y = 0
Put x = 5, so y = 2
Points for eq(ii) is (0, 0) and (5, 2)
Common point is (5, 2)
Now, plot this point on graph.
Hence, for more clarity graph of the equation given is mentioned below.
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Which is not a solution to the inequality: 3x+13= -8.
A. -8
B. -7
C. -6
D.-5
Answer:
All the options except for option B.
Answer:
A,C and D are not.
where as B is solution
What is the slope of a line perpendicular to 3x?
The slope of a line perpendicular to 3x is [tex]-\frac{1}{3}[/tex] .
What is slope ?
The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).
What is perpendicular ?
The word perpendicular means at right angles and this is because when two lines meet, they form right angles. Perpendicular lines can face in any direction such as up and down, crossways, and side-to-side.
Have given,
Slope of the line y=3x ,
you can compare it to y=mx+c form where m is the slope of the line.
y = 3x
differentiate respect of x
[tex]\frac{dy}{dx} = 3[/tex]
Now, the slope of the line perpendicular to the line that has a slope of m is [tex]-\frac{1}{m}[/tex]
The slope of a line perpendicular to 3x is [tex]-\frac{1}{3}[/tex] .
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A deli is trying out new labels for their cylindrical-shaped wheels of cheese. The label covers the entire wheel except the circular top and bottom.
If the wheel has a radius of 30 centimeters and a height of 20 centimeters, how many square centimeters of the wheel does the label cover? (Approximate using pi equals 22 over 7)
The required area that the label would cover is given as 3771.4 cm².
As mentioned in the question,
the wheel has a radius of 30 centimeters and a height of 20 centimeters,
The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.
here,
Area of the label, = 2πrh
Substitute the value in the above formula,
Area of the label = 2 × 22 / 7 × 30 × 20
Area of the label = 3771.4 cm²
Thus, the required area that the label would cover is given as 3771.4 cm².
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Answer: Then aswer the question wit your broke answer
Step-by-step explanation:
find the equation of tangent normal to the curve y=3x-x^3 at points where it cuts the x-axis
Correct Question:-
Find the equations of lines normal to the curve [tex]\rm{y=3x-x^3}[/tex] at points where it cuts the x axis.
[tex]\quad[/tex]
Solution:-
The given curve,
[tex]\longrightarrow\rm{y=3x-x^3}[/tex]
Differentiating wrt x we get,
[tex]\longrightarrow\rm{\dfrac{dy}{dx}=3-3x^2}[/tex]
This term is slope of tangent on the curve at a point (x, y).
Taking reciprocal,
[tex]\longrightarrow\rm{\dfrac{dx}{dy}=\dfrac{1}{3-3x^2}}[/tex]
and multiplying by -1,
[tex]\longrightarrow\rm{-\dfrac{dx}{dy}=\dfrac{1}{3x^2-3}}[/tex]
Now this term is slope of normal on the curve at a point (x, y).
[tex]\longrightarrow\rm{n(x)=\dfrac{1}{3(x^2-1)}}[/tex]
[tex]\quad[/tex]
The points where the curve [tex]\rm{y=3x-x^3}[/tex] cuts x axis is obtained by equating y = 0.
[tex]\longrightarrow\rm{0=y}[/tex]
[tex]\longrightarrow\rm{0=3x-x^3}[/tex]
[tex]\longrightarrow\rm{0=x(3-x^2)}[/tex]
[tex]\longrightarrow\rm{0=x(\sqrt3-x)(\sqrt3+x)}[/tex]
[tex]\Longrightarrow\rm{x\in\left\{-\sqrt3,\ 0,\ \sqrt3\right\}}[/tex]
So the points where the curve cuts x axis are (-√3, 0), (0, 0) and (√3, 0).
[tex]\quad[/tex]
Consider the point (-√3, 0).
The slope of normal at this point is,
[tex]\longrightarrow\rm{n(-\sqrt3)=\dfrac{1}{3((-\sqrt3)^2-1)}}[/tex]
[tex]\longrightarrow\rm{n(-\sqrt3)=\dfrac{1}{6}}[/tex]
Then equation of normal at this point is,
[tex]\longrightarrow\rm{y-0=\dfrac{1}{6}(x+\sqrt3)}[/tex]
[tex]\longrightarrow\bf{x-6y+\sqrt3=0}[/tex]
[tex]\quad[/tex]
Consider the point (0, 0).
The slope of normal at this point is,
[tex]\longrightarrow\rm{n(0)=\dfrac{1}{3((0)^2-1)}}[/tex]
[tex]\longrightarrow\rm{n(0)=-\dfrac{1}{3}}[/tex]
Then equation of normal at this point is,
[tex]\longrightarrow\rm{y-0=-\dfrac{1}{3}(x-0)}[/tex]
[tex]\longrightarrow\bf{x+3y=0}[/tex]
[tex]\quad[/tex]
Consider the point (√3, 0).
The slope of normal at this point is,
[tex]\longrightarrow\rm{n(\sqrt3)=\dfrac{1}{3((\sqrt3)^2-1)}}[/tex]
[tex]\longrightarrow\rm{n(\sqrt3)=\dfrac{1}{6}}[/tex]
Then equation of normal at this point is,
[tex]\longrightarrow\rm{y-0=\dfrac{1}{6}(x-\sqrt3)}[/tex]
[tex]\longrightarrow\bf{x-6y-\sqrt3=0}[/tex]
[tex]\quad[/tex]
Hence the equations of lines normal to the curve [tex]\rm{y=3x-x^3}[/tex] at points where it cuts x axis are,
[tex]\longrightarrow\left\{\begin{array}{ll}\bf{x-6y-\sqrt3}&\bf{=0}\\\bf{x+3y}&\bf{=0}\\\bf{x-6y+\sqrt3}&\bf{=0}\end{array}\right.[/tex]
How do you know when a graph is inequality?
Observing the graph and the lines drawn, The graph is inequality is known if it is showing the region for which the inequality exists. Usually it is shown with arrows at the end of the line.
What do you mean by inequality?An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made. Less than, larger than, less than or equal to, and more than or equal to are the four fundamental inequalities.
What do you mean by graph?The graph of a function f in mathematics is the collection of ordered pairs where f(x)=y. These pairs are Cartesian coordinates of points in two-dimensional space and so form a subset of this plane in the typical situation when x and f(x) are real integers.
Using a given graph,
We know that the graph is inequality if it is showing the region where the inequality exists,
It is usually shown using arrows at the end of the line towards the direction where the inequality is satisfied.
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The coordinate 2 has a weight of 2,
the coordinate 3 has a weight of 2,
and the coordinate 10 has a weight of 1.
Find the weighted average.
The coordinates' weighted average is 4
How is the weight average calculated?The "weighted average" is the average of a group of numbers, each of which has a unique "weight" or value. Add the results after dividing each number by its weight to obtain the weighted average. A weighted average or mean is one in which, as opposed to considering each item equally, each item being averaged is multiplied by a number (weight) based on the item's relative importance.The given parameters are:
Coordinate 2 has a weight of 2
Coordinate 3 has a weight of 2
Coordinate 10 has a weight of 1
The weight average is then calculated as:
Weight average = Sum of (Weight * Coordinate)/Sum of Weights
So, we have:
Weight average = (2 × 2 + 3 ×2 + 10 × 1)/(2 + 2 + 1)
Evaluate the quotient
Weight average = 4
Hence, the weight average of the coordinates is 4.
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If a and b are real numbers then a+b is a real number.This law is called ?
Step-by-step explanation:
This law is called the closure property of real numbers. It states that if a and b are real numbers, then their sum, a + b, is also a real number. This is because the set of real numbers is closed under addition, which means that any operation performed on real numbers will result in another real number.
For example, if a = 3 and b = 4, then a + b = 7, which is a real number. Similarly, if a = -2 and b = 3, then a + b = 1, which is also a real number.
The closure property of real numbers holds for many other mathematical operations as well. For example, the product of two real numbers is also a real number, as is the quotient of two real numbers (assuming that the divisor is not zero). The set of real numbers is also closed under subtraction and negation.
3.6432 rounded to the nearest hundredth
Answer: 3.64
Step-by-step explanation:
3.64
What is the Nearest Hundredth?
Nearest hundredth is the second digit after the decimal point.
How to Calculate Rounding to the Nearest 100th?
If the digit after hundredth is greater than or equal to 5, add 1 to hundredth. Else remove the digit. Example
124.586
The third digit of right of decimal point is 6
The second digit after decimal point is 8 which is greater than 5
So add 1 to 8
Result = 124.59
its 3.6400 I believe since you are rounding to the nearest hundredth which would be in the 2nd place value to the right of the decimal and 32 would round down to 0.
A runner sprinted for 198 yards . How many feet is this?
Is the system of linear equations 2x 3y 9 0 and 4x 6y 18 consistent justify your answer?
Consistency exists inside the linear equation system.
To determine whether a system of linear equations is consistent, you can try to solve the system to find the values of the variables that satisfy all of the equations. The system is consistent if it has at least one solution. If the system has no solutions, then it is inconsistent.
In this case, the system of linear equations is 2x + 3y - 9 = 0 and 4x + 6y - 18 = 0.
To solve this system, you can use algebraic methods such as substitution or elimination. Using substitution, you can solve one of the equations for one of the variables in terms of the other, and then substitute this expression into the other equation to solve for the other variable. For example, you could solve the first equation for y:
2x + 3y - 9 = 0
3y = 9 - 2x
y = (9 - 2x)/3
Then, you could substitute this expression for y into the second equation to solve for x:
4x + 6((9 - 2x)/3) - 18 = 0
4x + (54 - 12x)/3 - 18 = 0
(12x - 54)/3 + 4x - 18 = 0
(12x - 72)/3 = 0
12x - 72 = 0
12x = 72
x = 6
Substituting this value for x back into the first equation, you can solve for y:
2(6) + 3y - 9 = 0
12 + 3y - 9 = 0
3y = -3
y = -1
Therefore, the solution to this system of equations is x = 6 and y = -1. Since there is at least one solution, this system is consistent.
The complete question is:-
Is the system of linear equations 2x+3y-9=0 and 4x+6y-18=0 consistent? justify your answer.
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I'm giving all the points I got man, pls help me with this geometry question
Answer:
Vertex = (0,0)
Focus = (0, -1/8)
Axis of symmetry; x = 0
directrix, y = 1/8
graph: (attached picture)
Step-by-step explanation:
heart and star pls <3 brainliest will be appreciated <3(っ◔◡◔)っ -{ elyna s }-Answer:
Vertex = (0,0)
Focus = (0, -1/8)
Axis of symmetry; x = 0
directrix, y = 1/8
Step-by-step explanation:
What are the factors of the expression 2x² 5x 12?
The factors of the expression 2[tex]x^{2}[/tex] -5x -12 are (x - 4) and (2x+3)
given that
2[tex]x^{2}[/tex] -5x -12 =0
in the above equation
a = 2[tex]x^{2}[/tex]
b =-5x
c = -12
now we need to multiply a and c
a * c = 2[tex]x^{2}[/tex] * -12 = -24[tex]x^{2}[/tex]
now split b into two terms such that sum is equal to -5x and their product is -24
-5x = -8x +3x
2[tex]x^{2}[/tex] -5x -12 =0
2[tex]x^{2}[/tex] -8x + 3x -12 =0
2x(x - 4)+3(x-4) =0
(2x+3)(x-4) =0
The factors of the expression 2[tex]x^{2}[/tex] -5x -12 are (x - 4) and (2x+3)
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You are refilling your inventory of welcome packet for new cutomer. For each packet, it take 5 minute to print, 2 minute to organize, and 5 minute to proofread. The ink in the printer will need to be changed every 5 packet, which take 3 minute. You have 3 hour to dedicate to thi tak. Aume thathe ink in the printer wa already changed before beginning and that you have to complete each packet before completing any tep for the next one. How many welcome packet will you be able to fully complete in the time allotted?
Answer:
To complete each welcome packet, it will take a total of 5 minutes to print + 2 minutes to organize + 5 minutes to proofread = 12 minutes.
If it takes 3 minutes to change the ink in the printer every 5 packets, you will need to change the ink in the printer every 5 packets * 12 minutes per packet = 60 minutes.
In total, it will take you 60 minutes to change the ink in the printer + 12 minutes per packet to complete each packet, for a total of 60 minutes + (12 minutes/packet * number of packets) = 72 minutes per packet.
In the time allotted, you have 3 hours * 60 minutes/hour = 180 minutes.
Therefore, you will be able to fully complete 180 minutes / 72 minutes per packet = 2.5 packets.
Rounded down to the nearest whole number, you will be able to fully complete 2 welcome packets in the time allotted.
Step-by-step explanation:
Answer number 3 please thank you
Answer:
3. D
Step-by-step explanation:
1/10+1/8+1/15=1/x
24/240+30/240+16/240=1/x
70/240=1/x
7/24=1/x
1/3.4=1/x
x=3.4
How do you find the vertical asymptotes of the following function?
The vertical asymptotes of a function can be found by setting the denominator equal to zero and solving for x. This will give the x-values that the function cannot approach as it approaches infinity.
The vertical asymptotes of a function can be found by setting the denominator equal to zero and solving for x. This will give the x-values that the function cannot approach as it approaches infinity.In other words, a vertical asymptote is a line that the graph of a function approaches but never touches. This line is the result of the denominator of a rational function becoming equal to zero. When this happens, the function is undefined at that value of x. To find the vertical asymptotes of a function, one must first factor the denominator and set each factor equal to zero. Then, solve each factor for x to get the x-values of the vertical asymptotes. It is important to note that a vertical asymptote can also appear if the numerator of a rational function is equal to zero. In this case, the vertical asymptote is the x-value at which the numerator is equal to zero. The vertical asymptotes of a function can help us to understand the behavior of the function and its graph.
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What are the six steps of copying an angle?
Angle can be copied by following 6 steps.
How to copy an angle?These are the steps to copy an angle:
1.Make point B the center of the working line (l).
2.Create an arc (A, r) that intersects the two sides of angle A at locations S and T by setting your compass to any radius r.
3.Create an arc (B, r) with a point V where it intersects the line l.
4.Build an arc (S, ST).
5.Create an arc at point W where (V, ST) intersects (B, r).
6.You're done after you draw line BW.
Angle can be copied by following 6 steps.
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suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. we find the heights of 80 people. (you may need to use the standard normal distribution table. round your answers to the nearest whole number.) (a) how many would you expect to be between 165 and 175 cm tall? 55 correct: your answer is correct. people (b) how many would you expect to be taller than 166 cm?
a) 55 people expect to be between 165 and 175 cm.
b) 76 people to be taller than 166 cm.
What is Standard normal distribution?
The standard normal distribution is a special type of normal distribution where the mean is 0, and the standard deviation is 1.
a) To answer this question, we can use the standard normal distribution table to find the proportion of heights that fall within certain ranges of the mean.
The standard normal distribution table gives us the proportion of values within a certain number of standard deviations of the mean.
Since the standard deviation of the heights is 5, we can find the proportion of heights between 165 and 175 cm by looking at the range of values that are one standard deviation below and one standard deviation above the mean.
The mean of the heights is 170, so one standard deviation below the mean is 170 - 5 = 165. One standard deviation above the mean is 170 + 5 = 175. Therefore, the range of heights that are one standard deviation below and one standard deviation above the mean is 165 to 175.
If we look at the standard normal distribution table, we find that approximately 68% of the values fall within one standard deviation of the mean. Since 80 is approximately 68% of 118, we would expect approximately 55 people to have heights between 165 and 175 cm.
Hence, 55 people expect to be between 165 and 175 cm.
b) For the second part of the question, we can find the proportion of heights that are taller than 166 cm by looking at the range of values that are more than one standard deviation above the mean.
The mean of the heights is 170, so more than one standard deviation above the mean is anything greater than 175. If we look at the standard normal distribution table, we find that approximately 95% of the values fall within two standard deviations of the mean.
Since 80 is approximately 95% of 84, we would expect approximately 76 people to be taller than 166 cm.
Hence, 76 people to be taller than 166 cm.
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Work out (13.8 × 107) × (5.4 × 10-12)
Give your answer as an ordinary number.
62017.2 is the answer
Which series of transformation would create a congruent shape?
A series of transformations that would create a congruent shape would include any combination of rotations, reflections, and translations that preserve the size and shape of the original figure.
For example, rotating a square by 90 degrees and then reflecting it across a line of symmetry would create a congruent square. Similarly, translating a triangle to a new location on the plane while preserving its orientation would also create a congruent triangle.
What is transformation, why is it important, etc.?The structures, cultures, and business models of an institution must be realigned in order to create a learning environment that produces substantial and equitable increases in outcomes and educational value. Transformation describes this procedure.
What is the transformational process?Any activity or collection of activities that takes one or more inputs, changes and adds value to them, and produces outputs for consumers or clients is referred to as a transformation process.
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Braden salazar was deployed in a combat zone for all of 2021. He is married and has two children. Braden's nontaxable combat pay in 2021 is $14,000. His wife worked part-time while braden was deployed and earned $7,000. What is the maximum amount of earned income the salazars can report for eitc purposes in 2021?.
The amount of earned income the Salazars can report for EITC purposes in 2021 is $21,000.
The maximum amount of earned income the Salazars can report for EITC purposes in 2021 is $21,000. This is calculated by adding Braden's nontaxable combat pay ($14,000) and his wife's earned income ($7,000).
Formula:
Maximum Earned Income for EITC = Braden's Nontaxable Combat Pay + Wife's Earned Income
Maximum Earned Income for EITC = $14,000 + $7,000
Maximum Earned Income for EITC = $21,000
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What is ten more than twenty?
10 more than 20 will be Addition of 10 and 20 which is supposed to be 10 plus 20 = 30.
Addition is the process of combining items and counting them as a single large group. The process of adding two or more numbers together is known as addition in mathematics. The terms addends and total both refer to the numbers that are added and the result of the operation.
The SUM is the result or conclusion that results from adding two or more integers. Addends are the numbers that are added.
We simply changed "more than" to "plus" and found the answer to the straightforward math issue. It is equivalent to 10 + 20 to add 10 to 20. Therefore, the answer is 30 once more.
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How do you write numbers in Excel?
Go to the Home tab and choose Number from the drop-down menu. In addition, you have the following choices: When choosing Number, press CTRL + 1. Right-click the cell or cell range, choose Format Cells..., then choose Number.
what are numbers ?To calculate and represent a quantity, a number, an arithmetic value, is needed. Numbers are represented by mathematical inscriptions, such the letter "3." Using logical symbols or digits to represent numbers is known as a number system.
here ,
The cells you want to format should be selected.
Place your cursor over the Dialog Box Launcher next to Number on the Home tab.
Click Fraction in the Category list.
Select the desired fraction format type from the Type list by clicking it.
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Domain
1
2
3
Range
5
7
9
Does the mapping represent a function?
Answer:
bro what u doin this on a quiz u aint goin do this on time
Step-by-step explanation:
A construction worker is pouring concrete stairs. The first step requires 1. 8 cubic feet of concrete, and the first 5 steps require a total of 27 cubic feet. If the steps follow an arithmetic series, how much concrete is required for the first 12 steps? 259. 2 cubic feet 43. 2 cubic feet 156 cubic feet 140. 4 cubic feet.
We can follow Arithmetic series, then the number of cubic feet concrete is required for the first 12 steps = 140.4 cubic feet.
Given that,
The first step requires 1. 8 cubic feet of concrete,
The first 5 steps require a total of 27 cubic feet.
An arithmetic series is the sum of the terms in an arithmetic sequence with a definite number of terms. Following is a simple formula for finding the sum: Formula 1: If [tex]S_{n}[/tex] represents the sum of an arithmetic sequence with terms , then. This formula requires the values of the first and last terms and the number of terms.
For an arithmetic series
[tex]a , a+d , a+2d , a+3d , .......[/tex]
where a is the first term and d is the common difference, the sum of n terms equals,
[tex]S_{n}[/tex] = [tex]a_{n} +(\frac{n(n-1)}{2} ) d[/tex] (Equation-1)
Since the first step requires 1.8 cubic feet of concrete, a = 1.8.
Now, the first 5 steps require 27 cubic feet of concrete, that is,
[tex]S_{5}[/tex] = 27
a = 1.8
n = 5
We can substitute values in equation-1,
[tex]S_{n}[/tex] = [tex]a_{n} +(\frac{n(n-1)}{2} ) d[/tex]
[tex]S_{5}[/tex] = (5) (1.8) + [tex](\frac{5(5-1)}{2} )d[/tex]
[tex]S_{5}[/tex] = (5) (1.8) + [tex](\frac{5*4}{2} )d[/tex]
[tex]S_{5}[/tex] = (5) (1.8) + [tex]\frac{20}{2} d[/tex]
[tex]S_{5}[/tex] = (5) (1.8) + 10 d
[tex]S_{5}[/tex] = 9 + 10 d
Then, [tex]S_{5}[/tex] = 27
27 = 9 + 10d
27 - 9 = 10d
18 = 10d
d = [tex]\frac{18}{10}[/tex]
d = 1.8
Find the concrete required for 12 steps.
Then, we can substitute n = 12
So,
We can write,
[tex]S_{n}[/tex] = [tex]a_{n} +(\frac{n(n-1)}{2} ) d[/tex]
[tex]S_{12}[/tex] = (12) (1.8) + [tex](\frac{12(12-1)}{2} )d[/tex]
[tex]S_{12}[/tex] = (12) (1.8) + [tex]\frac{12*11}{2} d[/tex]
[tex]S_{12}[/tex] = (12) (1.8) + [tex]\frac{132}{2} d[/tex]
[tex]S_{12}[/tex] = (12) (1.8) + 66 d
[tex]S_{12}[/tex] = 21.6 + 66 d
We can substitute d = 1.8
[tex]S_{12}[/tex] = 21.6 + 66 (1.8)
[tex]S_{12}[/tex] = 21.6 + 118.8
[tex]S_{12}[/tex] = 140.4
Therefore,
We can follow Arithmetic series, then the number of cubic feet concrete is required for the first 12 steps = 140.4 cubic feet.
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What is the mean deviation of first 10 even natural numbers A 5 B 5.5 C 10 D 10 5?
To find the mean deviation of a set of numbers, you need to first find the average (mean) of the set, and then for each number in the set, subtract the mean and take the absolute value of the result. The mean deviation is then the average of these absolute values.
For the first 10 even natural numbers (2, 4, 6, 8, 10, 12, 14, 16, 18, 20), the mean is (2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20) / 10 = 60/10 = 6.
To find the mean deviation, you would subtract the mean from each number, take the absolute value of the result, and then average those values. The mean deviation of the first 10 even natural numbers is therefore (|6 - 2| + |6 - 4| + |6 - 6| + |6 - 8| + |6 - 10| + |6 - 12| + |6 - 14| + |6 - 16| + |6 - 18| + |6 - 20|) / 10 = (4 + 2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14) / 10 = 5.5.
So the answer is B: 5.5.
What are natural numbers in mathematics?Numbers in Nature When counting or organizing objects, the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 are utilized. Absolute numbers are integers and zeros. neither a fraction nor a decimal.
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