variability.
In statistics, variability refers to the spread or spread of a data set. It is a measure of how much the data points in the dataset differ from each other and from the mean (mean) of the data.
There are several ways to quantify dataset variability. A common measure of variability is range. This is the difference between the highest and lowest values in the dataset. Another measure of variability is variance. This is a measure of how far the data points are from the mean. Standard deviation is another measure of variability calculated by taking the square root of the variance.
In addition to these measures of variability, there are other statistical techniques that can be used to summarize the spread of datasets, such as Box plot and histogram. These techniques help visualize data variability and identify outliers.
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Julia just lit a new candle and then let it burn all the way down to nothing. The candle burned at a rate of 0.75 inches per hour and its initial length was 9 inches. Write an equation for L, L, in terms of t,t, representing the length of the candle remaining unburned, in inches, tt hours after the candle was lit
what is the answer too 1/14 x 9
Answer:
1/14×9=1×9/14and is equal to 9/14
quations: Practice
Question 2 of 5
Select the correct answer.
Which value for x makes the sentence true?
2 + 4 = 7
04
044
0-3
O
8
Answer:
there is no X in the eqn❗Step-by-step explanation:
there is no X in the eqn❗how would i answer it
a box has width $m$, where $m$ is a prime number. if the box has height $m 2$, length $m-1$, and a volume of 140, what is $m$?
The width of the box m = 5 units
The width of the box = m units
Where m is a prime number
Height of the box = m+2 units
The length of the box = m -1 units
The volume of the box = 140 cubic units
The volume of the box = Length × width × height
140 = m × (m+2) × (m-1)
140 = (m^2 + 2m )(m-1)
140 = m^3 - m^2 + 2m^2 - 2m
140 = m^3 + m^2 - 2m
m^3 + m^2 - 2m - 140 = 0
We can split the equation by taking the common term outside
(m-5) (m^2 + 6m + 28) = 0
Therefore, one value of m = 5
5 is a prime number
Therefore, the value of m is 5
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find the area of the region enclosed by one loop of the curve. r = sin(10θ)
The area of the region enclosed by one loop of the curve r = sin(10θ) is π/40.
We have to find the area of the region enclosed by one loop of the curve.
The given curve is:
r = sin(10θ)
Consider the region r = sin(10θ)
The area of region bounded by the curve r = f(θ) in the sector a ≤ θ ≤ b is
A = [tex]\int^{b}_{a}\frac{1}{2}r^2d\theta[/tex]
Now to find the area of the region enclosed by one loop of the curve, we have to find the limit by setting r=0.
sin(10θ) = 0
sin(10θ) = sin0 or sin(10θ) = sinπ
So θ = 0 or θ = π/10
Hence, the limit of θ is 0 ≤ θ ≤ π/10.
Now the area of the required region is
A = [tex]\int^{\pi/10}_{0}\frac{1}{2}(\sin10\theta)^2d\theta[/tex]
A = [tex]\frac{1}{2}\int^{\pi/10}_{0}\sin^{2}10\theta d\theta[/tex]
A = [tex]\frac{1}{2}\int^{\pi/10}_{0}\frac{(1-\cos20\theta)}{2}d\theta[/tex]
A = [tex]\frac{1}{4}\int^{\pi/10}_{0}(1-\cos20\theta)d\theta[/tex]
A = [tex]\frac{1}{4}\left[(\theta-\frac{1}{20}\sin20\theta)\right]^{\pi/10}_{0}[/tex]
A = [tex]\frac{1}{4}\left[(\frac{\pi}{10}-\frac{1}{20}\sin20\frac{\pi}{10})-(0-\frac{1}{20}\sin20\cdot0)\right][/tex]
A = [tex]\frac{1}{4}\left[(\frac{\pi}{10}-\frac{1}{20}\sin2\pi)-(0-\sin0)\right][/tex]
A = 1/4[(π/10-0)-(0-0)]
A = 1/4(π/10)
A = π/40
Hence, the area of the region enclosed by one loop of the curve r = sin(10θ) is π/40.
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a family consumes 4 litres of oil in 16 days how much old will be consumed in 200 days
A cloed cylindrical tank of diameter 14 m and height 5 m i made from a heet of metal. How much heet of metal will be required?
Answer:
[tex]528m^{2}[/tex]
Step-by-step explanation:
In order to find out how much sheet of metal is required to cover the cylinder, We find the total surface area
So the Formula to find the total surface area is,
[tex]2\pi r^{2} + 2\pi rh[/tex]
But first we need to find the radius with the formula
[tex]r= \frac{d}{2} \\[/tex]
[tex]r= \frac{14}{2} \\r=7[/tex]
Now we can apply the formula for the total surface area of a cylinder
[tex]2[/tex]x[tex]3.14[/tex]x[tex](7)^{2} +[/tex] [tex]2[/tex]x[tex]3.14[/tex]x[tex]7[/tex]x[tex]5[/tex]
[tex]307.72+[/tex][tex]219.8[/tex]
[tex]528m^{2}[/tex]
Hence the sheet of metal required is [tex]528m^{2}[/tex]
Hope it helps you
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A credit card ha an APR of 28. 53%, and it billing cycle i 31 day long. What i the credit card' periodic interet rate?
By dividing the annual percentage rate (APR) by the number of billing cycles per year, the periodic interest rate = 73.89%
What is periodic interest rate?The periodic interest rate is the interest rate that is applied to your credit card balance on a periodic basis, usually on a monthly or daily basis. It is calculated by dividing the annual percentage rate (APR) by the number of billing cycles in a year.
What is the formula to calculate periodic interest rate?The periodic interest rate would be calculated as follows:
Periodic interest rate = APR / number of billing cycles per year
Periodic interest rate = APR / number of billing cycles per year
Since the billing cycle is 31 days long, there are approximately 12/31 = 0.387096774 billing cycles per year. Therefore, the periodic interest rate would be:
Periodic interest rate = 28.53% / 0.387096774 = 73.89%
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if you're estimating the bias of a coin that came up heads 10 times and tails 20 times, what is the maximum likelihood estimate for the bias of this coin (p(heads))? round to the nearest 0.001.
if you're estimating the bias of a coin that came up heads 10 times and tails 20 times, 0.333 is the maximum probability estimate for the bias of this coin .
The maximum likelihood estimate for the bias of a coin is the ratio of the number of times it has come up heads to the total number of outcomes. In this case, the maximum likelihood estimate is 10/30, or 0.333. This is the most likely bias of the coin, rounded to the nearest 0.001. if you're estimating the bias of a coin that came up heads 10 times and tails 20 times, 0.333 is the maximum probability estimate for the bias of this coin .
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What is 6 divided by 2 (1+2)
Answer: 9
Step-by-step explanation:
6 / 2 ( 1+2)
We divided first
3 ( 1 +2)
Then we do the 1+2 second because they have ( )
3 (3)
Then we times them and get 9
given the data below for the reaction, 2 a + 2 b + 4 c => d + e + 3 f
For the given data for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is zero order in A, second order in B, first order in C and third order overall.
Let the order of reactions be a, b and c for reactions A, B and C respectively.
Then A^{a}B^{b}C^{c} ∝ R
Considering experiment 1 and 2, only concentration of A changes but it has no effect in the total. So a = 0.
Considering experiment 2 and 3, concentration of A and B changes, but it is found that A has no effect. So
(B₃ / B₂)^{b} = (R₃ / R₂)
(0.4/ 0.2)^{b} = (0.008/ 0.002)
2^{b} = 4
Therefore b = 2
Considering experiment 2 and 4
(A₄/ A₂)^{a}(B₄/B₂)^{b}(C₄/ C₂)^{c}= (R₄/ R₂)
(0.4/ 0.2)^{0}(0.6/ 0.2)^{2}(0.2/ 0.4)^{c}= (0.009/ 0.002)
3² × 0.5^{c} = 9/ 2
c = 1
Overall order of reaction = a + b + c
= 0 + 2 + 1
= 3
--The question is incomplete, answering to the question below--
"Given the data below for the reaction, 2 A + 2 B + 4 C => D + E + 3 F, the reaction is _____________ order in A, _______________ order in B, ______________ order in C and ______________ order overall."
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1. A cube with side length 5 centimeters has a density of 3 grams per cubic centimeter.
What is its mass?
Answer: The mass of the cube is 3 grams/cubic centimeter * (5 cubic centimeters) = 15 grams.
Step-by-step explanation:
Pleaseeee helpppp meeeee
Answer:
A. 1/4
Step-by-step explanation:
Gradient = y2-y1/x2-x1
=(2-1)/(8-4)
=1/4
Find the measure of <1
A. 35 degree
B. 81 degree
C. 82 degree
D. 116 degree
please help!!!
(Picture is provided)
Answer:
A. 35 degree
Step-by-step explanation:
The 116-degree angle must add with the inside angle to get 180. The inside angle is 64 degrees.
81 + 64 = 145
A triangle has 180 degree
180 - 145 = 35 degree
So, the answer is A
A once thriving company in teaneck had its monthly profits, in thousands of dollars, modeled by the equation? f(t) = t^2 9/ 1t^2 2 where t is in months after june 1st, 2002. estimate the company's profits on june 1st, 2002. estimate the company's profits many years into the future
The company's profits on June 1, 2002 is $4500 and the company's profits many years into the future is $1000 per month.
The equation f(t) = (t^2 + 9) / (t^2+2) provides the monthly profits, in thousands of dollar, where t refers to months after June 1, 2002.
The company’s profit on June 1, 2002 using the equation is when t = 0 months
f(0) = (0^2 + 9) / (0^2+2) = 9/2 = 4.5 or $4500.
The company’s profit on many years into the future using the equation is given by:
Limit(t→∞)((t^2+9)/(t^2+2))= Limit(t→∞)(2t/2t)=1
Hence the monthly profit is $1,000.
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Which of the following is not a parallelogram a square?
Answer:
Step-by-step explanation:
Try to remember the properties of each of the mentioned figures like the square is a parallelogram with all sides equal and all interior angles equal to 90o . Once you are able to recollect the definitions of each figure, use the definitions to reach an answer. Drawing the figures might be very helpful.
Complete step-by-step answer:
Let us try to remember the definitions of all the figures mentioned one by one. First let us start with Rhombus. So, rhombus is a parallelogram with all its sides equal and diagonals perpendicular to each other.
18. Which table represents a non-proportional relationship between x and y? X 1 3 7 15 Y -4 -12 -28 -60 X 1 4 7 10 Y 7. 5 30 52. 5 75 X -17 -5 2 10 Y 93. 5 27. 5 -11 -55 X -5 -1 1 8 Y 11 -1 -7 -28 10 X -5 -1 1 8 Y 7. 5 30 52. 5 75 y 11 - 1 -7 -28
Option D) is the correct answer. This is a non-proportional relationship.
A) -4 / 1 = -4
-12/3 = -4
-28/7 =-4
-60 /15 = -4
In this relationship, the value of y / x is constant. So, this is a proportional relationship.
B) 7.5 /1 =7.5
30/4 = 7.5
52.5/7 = 7.5
75/10 = 7.5
In this relationship, the value of y / x is constant. So, this is a proportional relationship.
C) 93.5 / -17 = -5.5
27.5/ -5 = 5.5
-11 / 2 = -5.5
-55 /10 = -5.5
In this relationship, the value of y / x is constant. So, this is a proportional relationship.
D) 7.5 / 5 =1.5
30 / -1 = -30
52.5 / 1 = 52.5
75/ 8 = 9.375
In this relationship, the value of y / x is not constant. So, this is a non-proportional relationship.
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The correct question is :
Which table represents a non-proportional relationship between x and y? A)X 1 3 7 15 Y -4 -12 -28 -60 B)X 1 4 7 10 Y 7. 5 30 52. 5 75 C)X -17 -5 2 10 Y 93. 5 27. 5 -11 -55 D) X -5 -1 1 8 Y 7. 5 30 52. 5 75
a ship leaves a harbor. it travels 35 miles due east and then adjusts its course 40 degrees northward. after traveling 45 miles in that direction, how far is the ship from its point of departure?
a ship leaves a harbor. it travels 35 miles due east and then adjusts its course 40 degrees northward. after traveling 45 miles in that direction,The distance from the ship's point of departure is approximately 59.9 miles.
To determine the distance from the ship's point of departure, we must first break down the distance traveled into x and y components. Initially, the ship traveled 35 miles due east, which can be represented as 35 miles on the x-axis. When the ship adjusted its course 40 degrees northward, it traveled 45 miles in that direction. This can be represented as 45 miles in the y direction, forming a triangle with the origin (point of departure). Using the Pythagorean theorem, we can calculate the hypotenuse of the triangle, which is equal to the distance from the point of departure. The hypotenuse of the triangle is equal to the square root of (35^2 + 45^2), which is equal to approximately 59.9 miles. Therefore, the distance from the ship's point of departure is approximately 59.9 miles.
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Please help me with this
The order of the side lengths from least to greatest is; GH< IH< FG< GI< FH.
What is the order of the side lengths from least to greatest?
As with other closed geometric figures, the shortest side length is opposite the smallest angle measure while the longest side length, is opposite the greatest angle measure.
Hence, it follows from the statement above that the order of side lengths is; GH< IH< FG< GI< FH.
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The diameters of two soup bowls with similar shape are 5 inches and 7 inches. The smaller bowl holds 10 fluid ounces. How much does the larger bowl hold?
The well's diameter is between 9 and 10 inches, its rim is 1 to 2 inches wide, it can go up to 1 12 inches deep, and its circumference is between 6 and 7 inches..
What is the typical bowl's diameter?Every bowl—including those with saucers—should be set on an underplate. has a flanged rim, a broad, shallow bowl. The well is 6 to 7 inches across, with a diameter of 9 to 10 inches, a rim that is 1 to 2 inches wide, and a depth of up to 1 12 inches. the sole soup bowl used for a formal supper.
What measurements does a bowl have?The average capacity of a normal bowl is 8 to 12 ounces. The soup bowl, that may or may not have handles, and the finger bowls,
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A three-column table i given. Part A C D
Part 14 28 63
Whole 20 40 B
What i the value of B in the table?
60
75
80
90
B in the table has a proportional value of 90.
What is proportion?A percentage is a component, piece, or amount that is compared to a total. It might be 0 or 1, or any number between 0 and 1. It can be stated numerically or as a percentage. In official statistics, one example would be the proportion of the Canadian population residing in a certain province. The population percentage is marked by the letter p, whereas the sample proportion is denoted by the letter p. Thus, p=0.43 if 43% of individuals visiting a business make a purchase before leaving.
Here,
Part 14 28 63
Whole 20 40 B
14/20=63/B
B=63*20/14
B=90
The value of B in the table is 90 by proportion.
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Question
Solve for x.
2(x−4 1/2)=−6.1
Enter your answer as a decimal or simplified mixed number in the box.
x =
PLSSSSSSSSSSSSSS HELP
Answer:
x = 1.45
Step-by-step explanation:
2(x - 4 [tex]\frac{1}{2}[/tex] ) = - 6.1 ← distribute parenthesis on left side
2x - 9 = - 6.1 ( add 9 to both sides )
2x = 2.9 ( divide both sides by 2 )
x = 1.45
the questions are on the picture
Answer:
(i) x = 17 cm
(ii) 360 cm²
(iii) 14400 cm³
(iv) 4000 cm²
Step-by-step explanation:
You want the slant side length, end area, volume, and total surface area of an isosceles trapezoidal prism with end bases 16 cm and 32 cm and end height 15 cm. The length of the prism is 40 cm.
(i) Slant sideThe slant side of the base is the hypotenuse of a right triangle that has legs of 15 cm and (32 -16)/2 = 8 cm. You recognize these numbers as belonging to the {8, 15, 17} Pythagorean triple, so you know the slant side is 17 cm.
If you don't recognize that triple, you can figure the side length as ...
x = √(15² +8²) = √(225 +64) = √289
x = 17 . . . centimeters
(ii) End areaThe area of the end trapezoid is given by ...
A = 1/2(b1 +b2)h = 1/2(32 +16)(15) = 360 . . . cm²
The area of the end surface is 360 cm².
(iii) VolumeThe volume of the prism is given by ...
V = Bh
where B is the area of the base, and h is the length between bases.
V = (360 cm²)(40 cm) = 14400 cm³
The volume of the prism is 14400 cubic centimeters.
(iv) Surface areaThe total surface area is the sum of the areas of the two bases and the lateral area. The lateral area is the product of the perimeter of the base and the length of the prism.
total area = 2 · base area + lateral area
total area = 2 · 360 cm² + (32 + 17 + 16 + 17 cm)(40 cm)
total area = 720 cm² + 3280 cm² = 4000 cm²
The total surface area of the prism is 4000 square centimeters.
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All of the points in the picture of on the same line (Points are: (5,13) (c,10) (2,4)
A. Find the Slope of the line and explain/show your reasoning.
B. Write an equation for the line.
C. What is the value of c? Explain or show your reasoning
Sorry for weird format wouldve uploaded a picture of it but it wasn't working
The slope of the line is 3, equation of the line is y = 3x-2 and value of c is 4
What is a slope of a line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
Given that, All the given points are on the same line and the points are: (5,13) (c,10) (2,4)
Finding the slope;
We know slope of a line passing through two points = (y₂-y₁)/(x₂-x₁)
so, considering the points (5,13) and (2,4)
= (4-13)/(2-5) = 3
Therefore, the slope of the line is 3
Finding the equation,
We know the general equation of a line is given by, y = mx+b,
Where m is slope and b is y intercept.
Solving for b, put x = 5, m = 3and y = 13, in the equation
13 = 5x3+c
b = 13-15
b = -2
Therefore, the equation is y = 3x-2
Finding the missing coordinate c,
Since, all the points lies in same line, so slope will be equal in all the points,
Therefore, (10-13)/(c-5) = 3
c-5 = -1
c = 4
Hence, The slope of the line is 3, equation of the line is y = 3x-2 and value of c is 4
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*what is the reward-to-variability (i.e., sharpe) ratio of the best feasible cal? group of answer choices .4221 .4511 .7639 .4315
The reward-to-variability ratio of the best feasible is 0.4221 that is option a.
The proportion of stocks invested in the optimal risky portfolio can be calculated with the use of following formula:
Portfolio Invested in the Stock = [(Expected Return of the Stock - Risk Free Rate)*(Standard Deviation of Bond)^2 - (Expected Return of the Bond - Risk Free Rate)*Covariance between Bond and Stock]/[(Expected Return of the Stock - Risk Free Rate)*(Standard Deviation of Bond)^2 + (Expected Return of the Bond - Risk Free Rate)*(Standard Deviation of Stock)^2 - (Expected Return of Stock - Risk Free Rate + Expected Return of Bond - Risk Free Rate)]*Covariance between Bond and Stock
Portfolio Invested in Bond = 1 - Portfolio Invested in the Stock
Here, Risk Free Rate = 4 and Covariance = 32*24*.1250 = 96
Using these values and other information provided in the question, we get,
Portfolio Invested in the Stock = [(10 - 4)*(24)^2 - (7 - 4)*96]/(10 - 4)*(24)^2 + (7 - 4)*(32)^2 - [(10 - 4 + 7 - 4)]*96 = .5593
Portfolio Invested in Bond = 1-.5593 = .4407
Step 2: Calculate Expected Return and Standard Deviation of the Optimal Risky Portfolio
Expected Return = Portfolio Invested in Stock*Expected Return of Stock Portfolio Invested in Bond*Expected Return of Bond = .5593*10% + .4407*7% = 8.68%
Standard Deviation = [(Portfolio Invested in Stock)^2*(Standard Deviation of Stock)^2 + (Portfolio Invested in Bond)^2*(Standard Deviation of Bond)^2 + 2*(Portfolio Invested in Stock)*(Portfolio Invested in Bond)]^(1/2) = [(.5593)^2*(32)^2 + (.4407)^2*(24)^2 + 2*(.5593)*(.4407)*(96)]^(1/2) = 21.90%
Step 3: Calculate Reward-to-Volatility Ratio
The reward-to-volatility ratio can be calculated with the use of following formula:
Reward-to-Volatility Ratio = (Expected Return of the Portfolio - Risk Free Rate)/Standard Deviation of Portfolio = (8.68 - 4)/21.90 = .4221
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Which of the following equations correctly represents the distance between points (1, -1) and (-2, 2)?
The equations correctly represent the distance between points (1, -1) and (-2, 2) as d = √(1+2)² + (-1-2)².
What is the distance formula?
The distance formula can be used to calculate the separation between two points on the XY plane. The coordinate of a point is represented as an ordered pair (x, y), where the x-coordinate (or abscissa) is the distance from the x-axis and the y-coordinate (or ordinate) is the distance from the y-axis.
Here, we have
Given
The distance between points (1, -1) and (-2, 2).
We have to find the equation that represents the distance formula
Distance formula = √(x₂-x₁)² + (y₂-y₁)²
Now we put the value of x and y in the formula and we get
d = √(1+2)² + (-1-2)²
d = √3² +(-3)²
d = √9+9
d = √18
d = 3√2
Hence, the equations correctly represent the distance between points (1, -1) and (-2, 2) as d = √(1+2)² + (-1-2)².
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the area a of a square is increasing at 6cm2 per minute. how fast is the side length of the square changing when a
A square's area an is growing at a rate of 6 cm2 each minute. The side length of the square is increasing at a rate of 2.45 cm/min.
The side length of a square is related to the area of the square by the equation side length = square root of (area). That means, if the area is increasing, the side length of the square is also increasing. To calculate the rate at which the side length is changing, we can take the derivative of the equation side length = square root of (area) with respect to time. This gives us a rate of change of 2.45 cm/min. This means that for every minute the area increases by 6 cm2, the side length of the square will increase by 2.45 cm.
Rate of change = d(side length) / dt
= (1/2) * (d(area) / dt) / (square root of (area))
= (1/2) * (6 cm2/min) / (square root of (area))
= 2.45 cm/min
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What is the equation in point-slope form of a line that passes through the points (−4, −1) and (5, 7) ? Responses
Considering the expression of a line, the equation of the line that passes through the pair of points (−4, −1) and (5, 7) is y=8/9x + 23/9.
Linear equationA linear equation o line can be expressed in the form y = mx + b
where
x and y are coordinates of a point.m is the slope.b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.Knowing two points (x₁, y₁) and (x₂, y₂) of a line, the slope m of the line can be calculated as:
m= (y₂ - y₁)÷ (x₂ - x₁)
Substituting the value of the slope m and the value of one of the points in the expression y = mx + b, the value of the ordinate to the origin b can be obtained.
Equation in point-slope form in this caseBeing (x₁, y₁)= (-4, -1) and (x₂, y₂)= (5, 7), the slope m can be calculated as:
m= (7 - (-1))÷ (5 - (-4))
Solving:
m= (7 +1)÷ (5 + 4)
m= 8÷ 9
m= 8/9
Considering point 2 and the slope m, you obtain:
7= 8/9×5 + b
7= 40/9 +b
7-40/9= b
23/9=b
Finally, the equation of the line is y=8/9x + 23/9.
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This data records the ages of people on a bus to the seaside.
2 4 25 31 3 23 24 26 37 42
60 76 33 24 25 18 20 77 5 13
18 13 15 49 70 48 27 25 24 29
Find the mean age of all the people on the bus, showing your working.
Answer:
29.5 or 30 if rounded
Step-by-step explanation:
Add all of the numbers then divide by how many there is 30
886 divide by 30
= 29.5
Hope this helps!!!
यसको वक्र सतहको क्षेत्रफल पत्ता लगाउनुहोस् । The circumference of base of a cylinder is x cm and height is y cm. Find its curved surface area.
Answer:
Step-by-step explanation: