Al-Khwarizmi made significant contributions to mathematics through his development of algebra and the introduction of Hindu-Arabic numerals.
Al-Khwarizmi's work in algebra involved the systematic solving of linear and quadratic equations using variables and symbols, establishing algebra as a distinct field of mathematics. His introduction of Hindu-Arabic numerals, including the concept of zero and the decimal place value system, revolutionized mathematical notation and calculation methods. These contributions laid the foundation for modern algebra and greatly influenced the advancement of mathematics.
Development of Algebra: Al-Khwarizmi is known as the "Father of Algebra" for his work in developing algebra as a distinct mathematical discipline. He introduced systematic methods for solving linear and quadratic equations, using variables and symbols to represent unknown quantities. This laid the foundation for modern algebraic techniques.
Introduction of Hindu-Arabic Numerals: Al-Khwarizmi played a key role in introducing Hindu-Arabic numerals to the Western world. He explained the numerical system based on digits 0-9 and the decimal place value system. This numeral system revolutionized mathematics and made complex calculations more efficient. It eventually replaced the Roman numeral system and is widely used today.
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Consider the partially completed one-way ANOVA summary table.Source Sum of Squares Degrees of Freedom Mean Sum of Squares F Between 270Within 18 Total 810 21The number of factor levels being compared for this ANOVA procedure is
The degrees of freedom for the between groups would be 4-1 = 3 and the degrees of freedom for the within groups would be 24-4 = 20.
What do you mean by factor ?A factor is a number that divides another number, leaving no remainder. In other words, if multiplying two whole numbers gives us a product, then the numbers we are multiplying are factors of the product because they are divisible by the product.
The number of factor levels being compared for this ANOVA procedure cannot be determined from the given information. The degrees of freedom for the between and within groups are provided, but the number of factor levels is not directly given.
In general, the number of factor levels in a one-way ANOVA refers to the number of groups being compared. Each group represents a level of the factor being studied.
To find the number of factor levels, we need to know the degrees of freedom associated with the between and within groups. The degrees of freedom for the between groups is equal to the number of groups minus one, while the degrees of freedom for the within groups is equal to the total number of observations minus the number of groups.
For example, if we had 4 groups and 24 total observations, the degrees of freedom for the between groups would be 4-1 = 3 and the degrees of freedom for the within groups would be 24-4 = 20.
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Amani computed in a two-way table the relative frequencies of sales of homes listed with two different real estate companies. Home Sales by Real Estate Company Sold in 100 Days or Less Did Not Sell within 100 Days Company A 44. 5% 55. 5% Company B 45. 1% 54. 9% Which statement best describes the relationship between the two variables? There is an association because the relative frequencies by column are similar. There is an association because the relative frequencies by row are similar. There is no association because the relative frequencies by column are similar. There is no association because the relative frequencies by row are similar.
The statement which best describes the relationship between the two variables is there is no association because the relative frequencies by column are similar.
How to read the data from the two-way table?Two-way table is a way to represent the data of the two or more variable.
To read the data from the table, look for the value of one variable, and get the resultant value of other variable from the corresponding block.
Amani computed in a two-way table the relative frequencies of sales of homes listed with two different real estate companies.
Home Sales by Real Estate Company
Sold in 100 Days or Less Did Not Sell within 100 Days Company A 44.5% 55.5%
Company B 45.1% 54.9%
Association is found out, when there is significant difference between the data. The frequency of the homes sold in 100 Days or Less by company A is 44.5% and by company B is 45.1%. These values are almost equal.
In the table, the values of home did Not sell within 100 Days is also almost same for both the companies. Which suggest that there is no association.
Thus, the statement which best describes the relationship between the two variables is there is no association because the relative frequencies by column are similar.
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Answer:
D) There is no association because the relative frequencies by row are similar.
Step-by-step explanation:
got it right on edge 2022!
please help me on this
Answer:
I got 5/16 as my answer
Step-by-step explanation:
I used a calculator to solve the equation :/
Mrs. Drew wants to build a square sandbox for her children. The area of the sandbox will be 97 ft.² .97 feet to the nearest 10th, what is the total length of wood mystery needs to make the sides of the sandbox?
Answer:
9.8ft
Step-by-step explanation:
We are told in the question that Mrs Drew wants to build a sand box for her children. The shape is Square.
The formula for the Area of a square = L²
L = Side length
The area of the sandbox will be 97 ft.²
Hence,
97ft² = L²
Squareroot both sides
√97ft² = √L²
L = 9.8488578018 ft
Approximately to the nearest tenth (10th) = 9.8 ft
Therefore, the total length of wood mystery needed to make the sides of the sandbox is 9.8ft
Perform the below calculations and round to the correct number of decimals/sig. figs. a. 12.5849+2.4 b. 432.5−24.3984 c. 246×1.5 d. 974.59/14.2
He answers rounded to the correct number of decimals/sig. figs are:a. 15.0 b. 408.1 c. 369 d. 68.65
a. 12.5849+2.4Adding 12.5849 and 2.4 gives: 15. 0 (rounded to one decimal place) b. 432.5−24.3984Subtracting 24.3984 from 432.5 gives: 408. 1 (rounded to one decimal place) c. 246×1.5Multiplying 246 and 1.5 gives: 369 (no rounding required) d. 974.59/14.2Dividing 974.59 by 14.2 gives: 68.65 (rounded to two decimal places)
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Grandma planted one pine tree and one mahagony tree in her yard. the pine tree was 60 inches tall when she planted it and grows 12 inches per year. the mahogany tree was 100 inches tall when she planted in at grows 8 inches per year.
select and define the independent and dependent variables include the units.
write a system of equations to represent this situation.
solve the system of equations.
interpret the solution in the context of the situation (include units).
The independent variable in this situation is the number of years, represented by 'y,' and the dependent variables are the heights of the pine tree and the mahogany tree.
To represent this situation with a system of equations, we have:
h-pine = 60 + 12y
h-mahogany = 100 + 8y
Solving the system of equations requires finding the values of 'y' when the heights of the trees are equal. Setting h-pine equal to h-mahogany, we get:
60 + 12y = 100 + 8y
Simplifying the equation:
4y = 40
y = 10
Interpreting the solution, we find that after 10 years, the heights of the pine tree and the mahogany tree will be equal. The height of the trees can be determined by substituting the value of 'y' back into the original equations. After 10 years, both the pine tree and the mahogany tree will be 180 inches tall.
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21
Determine which equations are in standard form.
A 6x-7y=8
B y = 2x + 6
1
с
52 + 2y = 3
=
D
4x - 11y =-7
E - 3x + 5y = 12
-
NEED HELP ASAP! Tysm
Answer:
7
Step-by-step explanation:
First you gotta plug in the values and you get 5*2 - 6(-4)/7
5 squared is 25
-6 times -4 is +24
25 + 24= 49
49/7= 7
Hope this helps! :)
A cell phone company uses the equation C=$0.15t+$35.00 to determine the total cost, C, for a month of service based on the number of text messages, t. Identify the slope.
Slope is $0.15 of the equation of cost C=$0.15t+$35.00.
What is Slope of 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.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
Given that A cell phone company uses the equation C=$0.15t+$35.00
C is the total cost for a month of service.
t is the number of text messages.
We have to find the slope of the equation.
slope is 0.15 and 35.00 is the y intercept of the equation given.
Hence, slope is $0.15 of the equation of cost C=$0.15t+$35.00.
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Website A charges $5 to rent a video game plus a $12 registration fee. Website B charges $2 to rent a video game plus a $24 registration fee. How many video games would you have to rent for the total cost to be the same for each website?
Website A
$5 rental fee + $12registration fee
Website B
$2 rental fee + $24 registration fee
Let x represent the number of videogames you have to rent, tyou can calculate the total cost for renting videogames at each website as:
\(C_A=12+5x\)\(C_B=24+2x\)To calculate the number of videogames you have to rent for the total cost to be the same regardless the web site, you have to equal both expressions:
\(\begin{gathered} C_A=C_B \\ 12+5x=24+2x \end{gathered}\)And now what's left is to calculate for x:
\(\begin{gathered} 12+5x=24+2x \\ 5x-2x=24-12 \\ 3x=12 \\ \frac{3x}{3}=\frac{12}{3} \\ x=4 \end{gathered}\)You have to rent 4 videogames in each website for the total cost to be the same.
2a - 7d = 3d solve for a
Answer:
a=5
Step-by-step explanation:
Answer:
A=5
Step-by-step explanation:
Hope this helps! (:
An airline claims that it rarely loses a passenger's checked luggage, and, if checked luggage is lost, 90% of the luggage is recovered and returned to the owner within 24 hours. A consumer group believes the 24-hour recovery rate of lost luggage is actually lower (worse) than the airline's claim. They surveyed a large random sample of the airline's customers and found that 103 of 122 people who had lost luggage were reunited with the missing items within 24 hours. Is this enough evidence to claim the proportion of people who lost luggage with this airline a
The number that corresponds to the null hypothesis and the alternative hypothesis will be 3 and 6 respectively.
What is a null hypothesis?Specify the correct number from the list below that corresponds to the appropriate null and alternative hypotheses for this problem.
It should be noted that the null hypothesis suggests that there's no statistical relationship between the variables.
The alternative hypothesis is different from the null hypothesis as it's the statement that the researcher is testing.
In this case, the number that corresponds to the null hypothesis and the alternative hypothesis will be 3 and 6 respectively.
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What is 2. 314 repeating as a fraction in simplest form
look at the pic below an help pls
Answer:
y=2/3(x-3)^2+1
Step-by-step explanation:
The parent function of a parabola is y=x^2:
The transformation of this graph shows the parabola is shifted to the right 3 and up 1 so we apply that to our equation y=(x-3)^2+1
to solve the stretch factor:
y=a(x-3)^2+1
we can see when x=0 y=7 so we use this set
7=a(0-3)^2+1
7=a(-3)^2+1
-1 -1
6=9a
divide by 9
a=2/3
ced: 7
Assignment: Lesson 2.12 & 2.13
13
Problem ID; PRABMTKN
Explain or show that the point (5,-4) is a solution to this system of equations:
3x - 2y = 23
2x + y = 6
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Answer:
2.15
Step-by-step explanation:
substitute using elimination method and divide ur answers together.
Describe the translation in j(x)=(2x)+3 as it relates to the graph of the parent function?
Answer:
Horizontal compression by a factor of 2 followed by a vertical shift by positive 3
Step-by-step explanation:
a*f(k(x-d))+c
k=2
c=3
Use the Binomial Theorem to expand the binomial. SHOW STEPS
(d-4b)^2
Some one please help!!!
The binomial theorem says
\(\displaystyle (a + b)^n = \sum_{k=0}^n \binom nk a^{n-k} b^k \\\\(a+b)^n= \binom n0 a^n + \binom n1 a^{n-1}b + \cdots + \binom n{n-1} ab^{n-1} + \binom nn b^n\)
where
\(\dbinom nk = \dfrac{n!}{k!(n-k)!}\)
is the so-called binomial coefficient. The binomial coefficients follow a neat pattern called Pascal's triangle:
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
where the n-th row, starting with n = 0, lists the coefficient of the k-th term in the sum (with 0 ≤ k ≤ n). For example,
\(\displaystyle n=0 \implies (a + b)^0 = \sum_{k=0}^0 \binom nk a^{0-k} b^k = \binom00 a^{0-0} b^0 = \underline{1}\)
\(\displaystyle n=1 \implies (a + b)^1 = \sum_{k=0}^1 \binom 1k a^{1-k} b^k = \binom10 a^{1-0} b^0 + \binom11 a^{1-1}b^1 = \underline{1}a + \underline{1}b\)
\(\displaystyle n=2 \implies (a + b)^2 = \sum_{k=0}^2 \binom 2k a^{2-k} b^k = \binom20a^{2-0}b^0+\binom21a^{2-1}b^1+\binom22a^{2-2}b^2 = \underline{1}a^2 + \underline{2}ab+\underline{1}b^2\)
Each row starts and ends with 1, and every coefficient in between is obtained by adding the coefficients directly above and to the left. The next row, for instance, would be
1 1 + 4 4 + 6 6 + 4 4 + 1 1
or
1 5 10 10 5 1
which is to say,
\(\displaystyle (a + b)^5 = \underline{1}a^5+\underline{5}a^4b+\underline{10}a^3b^2+\underline{10}a^2b^3+\underline{5}ab^4+\underline{1}b^5\)
In your case, we have (d - 4b)², so we take a, b, and n above with d, -4b, and 2, respectively:
\(\displaystyle (d - 4b)^2 = \sum_{k=0}^2 \binom 2k d^{2-k} (-4b)^k\)
\(\displaystyle (d - 4b)^2 = \sum_{k=0}^2 \binom 2k (-4)^k d^{2-k} b^k\)
\(\displaystyle (d - 4b)^2 = \binom20 (-4)^0 d^{2-0} b^0 + \binom21 (-4)^1 d^{2-1} b^1 + \binom22 (-4)^2 d^{2-2} b^2\)
\(\displaystyle (d - 4b)^2 = 1\cdot1\cdot d^2\cdot1 + 2 \cdot (-4) d \cdot b + 1 \cdot 16 \cdot 1 \cdot b^2\)
\(\boxed{(d - 4b)^2 = d^2 - 8bd + 16b^2}\)
Problem
3 erasers cost $4.41
Which equation would help determine the cost of 4 erasers?
Answer:
4.41/ 3 = 1.47 each
Step-by-step explanation:
In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence scores for males than for females. Following are hypothetical data, similar to the results obtained in the study. Note that the scores are not regular IQ scores but have been standardized so that the entire sample has a mean of M 5 10 and a standard deviation of s 5 2. a. Calculate the mean and the standard deviation for the sample of n 5 8 females and for the sample of n 5 8 males. b. Based on the means and the standard deviations, describe the differences in intelligence scores for males and females.
Answer:
mean value of female = 10.000
standard deviation of female = 1.604
mean value of male = 10.000
standard deviation of male = 2.449
Step-by-step explanation:
Given:
n=8 females
n=8 males
The objective is to find the mean and deviation and also based on the mean and the standard deviation have to describe the differences in intelligence scores for males and females
Solution:
The mean and the standard deviation are found by using MINITAB
The MINITAB procedure is explained as follows,
Step 1
choosing start > Basic statistics > Display Descriptive Statistics
Step 2
In variables supposed to enter the columns Female and Male
Step 3
Here choosing option statistics and select Mean and standard deviation
Step 4
Finally clicking OK
MINITAB output is as follows,
variable Mean standard deviation
Female 10.000 1.604
Male 10.000 2.449
b)
From the MINITAB output the mean are same for females and males.
Here the standard deviation of females is less than the standard deviation of males. That is the male scores are more variable when compared to female scores.
What would be the second step in simplifying the expression 4 2 ÷ (2 • 9) + 5?
Answer:
7.333
Step-by-step explanation:
(42 ÷ 18 ) +5 =
7/3 +5 =
7/3 + 15/3 =
22/3 =
7.333
Answer:
4.33
Step-by-step explanation:
PLEASE HELP! WILL GIVE BAINLEST!!!!!!!!!!!!! AND 50 POINT
Answer:
0.555dollar=55.5 cents
which is the best unit to measure the distance between califronia and new york
Answer:
Miles would be the best.
Step-by-step explanation:
Miles are the largest way to measure land, so I would use that.
Miles
When measuring that far of a distance, you want to use the largest unit of measurement, because measuring in inches or centimeters is unrealistic.
Hope this helps! Good luck! :)
9-3+2x9 explain it please
Answer:
Answer is
Step-by-step explanation:
9-3+18
9-21
-12
Answer:
24
Step-by-step explanation:
Follow the order of operations and do the multiplication first
2*9=18
Then go from left to right as it is all addition and subtraction from there
9-3+18
9-3=6
6+18=24
if snoop drove 114 km in2 hr. what is his average speed
Answer:
57 km per hour is the average speed
Step-by-step explanation:
what is the amplitude of y = 3[6(x-4)] - 5
'I hope my answer helps you'
Question: y = 3cos[6(x-4)] - 5
Answer: 3
Step-by-step explanation:
The reason for this is in order to find amplitude, it's always the number before "cos" or "sin". Also, the "[6(x-4)]" was just a distraction to throw you off
Here's a trick to find everything; amplitude, period, phase sift, etc.:
y = A sin(B(x + C)) + D
* amplitude is A
* period is 2π/B
* phase shift is C (positive is to the left)
* vertical shift is D
Which of the following statements is true about the slope of the least squares regression line when the correlation coefficient is negative? a. The slope is negative. b. The slope is positive. C. The slope is zero. d. Nothing can be said about the slope based on the given information
The statement "a. The slope is negative" is true about the slope of the least squares regression line when the correlation coefficient is negative.
When the correlation coefficient is negative, it indicates an inverse relationship between the two variables. In a linear regression, the slope of the line represents the direction and magnitude of the relationship between the independent and dependent variables. A negative correlation coefficient indicates that as the independent variable increases, the dependent variable decreases. Therefore, the slope of the least squares regression line will also be negative.
The slope of the regression line is calculated using the formula: slope = correlation coefficient * (standard deviation of y / standard deviation of x). Since the correlation coefficient is negative and the standard deviation of x and y are positive values, multiplying a negative correlation coefficient by positive standard deviations will result in a negative slope. Hence, option "a. The slope is negative" is the correct statement.
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quroa container with a square base, vertical sides, and closed top is to have a volume of 2000 cm3. it costs twice as much per square centimeter to make the top and bottom as it does the sides. find the dimensions of the container that will minimize the cost. round your answer to the nearest tenth, and use correct units
The dimensions of the container that will minimize the cost are:
Length of the square base: 12.6 cm
Height of the container: 12.6 cm
Determine the length of the square?Let's denote the length of the square base as x and the height of the container as h. Since the container has a square base, the area of each side is x². The cost of making the sides is c per square centimeter, while the cost of making the top and bottom is 2c per square centimeter.
The volume of the container is given as 2000 cm³, so we have the equation x²h = 2000.
To minimize the cost, we need to minimize the surface area. The surface area is composed of the sides, which have an area of 4xh, and the top and bottom, each having an area of x². Thus, the total surface area is 4xh + 2x².
To find the dimensions that minimize the cost, we need to minimize the surface area while satisfying the volume constraint. By substituting the value of h from the volume equation into the surface area equation, we can express the surface area in terms of x only.
Then, we can differentiate the surface area equation with respect to x, set it equal to zero, and solve for x. The resulting value of x is approximately 12.6 cm. Substituting this value back into the volume equation gives us the corresponding value of h, which is also approximately 12.6 cm.
Therefore, the dimensions of the container that will minimize the cost are a length of 12.6 cm for the square base and a height of 12.6 cm.
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Find the probability P(-1 < Y < 2) when Y is a Gaussian random variable with mean 1 and variance 0.5 Y is a Laplace random variable with pdf 0.5e-y for y 2 0 fy(y) = 0.5e-Iyl = 0.5ey for Y < 0 .
The probability is approximately 0.7745 for the Gaussian random variable and approximately 0.4323 for the Laplace random variable.
Let's first find the probability P(-1 < Y < 2) when Y is a Gaussian random variable with mean 1 and variance 0.5.
We can standardize the random variable Y as follows:
Z = (Y - μ) / σ
where μ is the mean and σ is the standard deviation.
In this case, we have:
μ = 1 and σ²
= 0.5, so σ
= sqrt(0.5)
= 0.7071.
Substituting these values, we get:
Z = (Y - 1) / 0.7071
Now, we can find the probability P(-1 < Y < 2) in terms of Z as follows:
P(-1 < Y < 2) = P((-1 - 1) / 0.7071 < (Y - 1) / 0.7071 < (2 - 1) / 0.7071)
P(-2.8284 < Z < 1.4142)
Using a standard normal table or calculator, we can find that this probability is approximately 0.7745.
Now, let's find the probability P(-1 < Y < 2) when Y is a Laplace random variable with pdf \(0.5e^-|y|\).
We can integrate the pdf between -1 and 2 as follows:
P(-1 < Y < 2) = \(∫₋₁² 0.5e^-|y| dy\)
Since the pdf is even, we can simplify this as:
P(-1 < Y < 2) = \(2∫₀² 0.5e^-y dy\)
P(-1 < Y < 2) =\(e^-1 - e^-2\)
Using a calculator, we can find that this probability is approximately 0.4323.
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the blueprints at addison circle is a sculpture that took 18,000 worker-hours to construct using over 410,000 pounds of steel. The piece of art is placed within a traffic circle with a diameter of 133 feet. find the area of the circle. Round to the nearest tenth of a square foot.
Answer:
Area = 13,898.5 ft^2
Step-by-step explanation:
Here, we are tasked with calculating the area of the circle given the value of the diameter.
Mathematically, the area of a circle is;
A = pi * d^2/4
Where d here is 133 feet
A = 22/7 * 133 * 133 * 1/4 = 13,898.5 ft^2
The height of males aged between 17 and 20 follows a normal distribution, with a mean of 71.1 inches and a standard deviation of 2.3 inches.
If the number of males between ages 17 and 20 is 11.0 million, how many males in this age group have heights between 69 inches and 73 inches?
A)3.6 million
B)4.1 million
C)6.8 million
D)9.7 million
Answer:
B
Step-by-step explanation:
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