The probability that an arbitrarily chosen adult has an IQ higher than 132.7 is 0.0322, or roughly 3.22%.
Using a standard normal distribution table, we can find the z-score corresponding to an IQ of 132.7:
z = (132.7 - 100.3) / 17.6 = 1.84
The probability of a randomly selected adult having an IQ greater than 132.7 is equal to the area to the right of the z-score of 1.84 on the standard normal distribution curve:
P(Z > 1.84) = 0.0322 (rounded to four decimals)
Therefore, the probability of a randomly selected adult having an IQ greater than 132.7 is 0.0322 or about 3.22%.
The Value of first quartile Q1 is 91.2.
For the second part, we need to find the IQ score that separates the bottom 25% from the top 75%. Using a standard normal distribution table, we can find the z-score corresponding to the 25th percentile:
z = invNorm(0.25) = -0.6745
Now we can solve for the IQ score using the formula:
z = (x - μ) / σ
-0.6745 = (x - 101.8) / 15.7
x - 101.8 = -10.603
x = 91.197
Rounded to one decimal place, the first quartile Q1 is 91.2.
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At the bakery where Isaac works, one of the cups in a cupcake tray has a radius of 3 centimeters. What is the cup's diameter? centimeters
The diameter οf the cup is 6 centimeters.
What is the diameter οf a circle?A circle's diameter is defined as a line thrοugh the centre that jοins the circumference at bοth ends. It is twice as lοng as the circle's radius. In οther wοrds, the line that splits a circle in half evenly at its centre is the diameter οf the circle.
The diameter οf a circle is equal tο twice its radius.
Therefοre, tο find the diameter οf the cup, we need tο multiply the radius by 2:
Diameter = 2 x Radius
Diameter = 2 x 3 cm = 6 cm
Hence, the diameter οf the cup is 6 centimetres.
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Bridgette just went down the slide at the playground. She walks 1 meter to get from the end of the slide back to the ladder. Then she climbs 3 meters to the top of the slide again. How long is the slide? If necessary, round to the nearest tenth.
Please respond.
Thank you!
Answer:
2.14 (rounded to the nearest tenth)
Step-by-step explanation:
Let's assume that the length of the slide is represented by the variable "x".
Based on the information provided in the question, Bridgette walks 1 meter from the end of the slide back to the ladder and climbs 3 meters to reach the top of the slide again. Therefore, the total vertical distance Bridgette covers in one trip down and up the slide is 1 + x + 3 = x + 4 meters.
The length of the slide is the hypotenuse of a right triangle formed by the slide and the total vertical distance Bridgette covers in one trip down and up the slide. Using the Pythagorean theorem, we can write: x^2 = (x + 4)^2 - 1^2
Simplifying this equation, we get: x^2 = x^2 + 8x + 16 - 1
7x = 15
x = 2.14 (rounded to the nearest tenth)
Therefore, the length of the slide is approximately 2.1 meters.
Answer:
The slide is 3.2 m long---------------------------------
The slide and ladder form a right triangle with:
Horizontal leg (distance from slide to ladder) = 1 m,Vertical leg (ladder) = 3 m.Let the length of the slide be s, this is a hypotenuse.
Find s using Pythagorean:
[tex]s=\sqrt{1^2+3^2} =\sqrt{1+9}=\sqrt{10}=3.2\ m \ rounded[/tex]What is the area of a sector with a central angle of 90° and a diameter of 20.6 mm?
Use 3.14 for and round your answer to the nearest hundredth.
Enter your answer as a decimal in the box.
mm²
Answer:
37.03 sq. mm.
Step-by-step explanation:
got it right on usa test prep
A circular fountain has a radius of 11 feet. Find the area in terms of pi
[tex]\mathcal{A} = \pi r^{2} = \pi (11^{2}) = 121 \pi \ ft^{2}[/tex]
Answer:
121 pi divide to 4
Step-by-step explanation:
the answer is 121 pi divide to 4. please see it on the picture.
find each missing length to the nearest tenth
Answer: 4.1
Step-by-step explanation: To find a missing leg you must square both numbers, then subtract the leg you do have from the hypotenuse ( 33.64 - 16.81) to get the squared number for the missing leg ( 16.83). You then have to find the square root of that number and round to the nearest tenth (4.1).
The ratio of 2 institutions is 7 : 3 and their sum is 630. Find the number
the first institution has 441 and the second institution has 189.
We can use algebra to solve the problem. We can start by assigning variables to represent the two institutions:
Let x be the multiplier of the ratio.
Then, we have:
7x is the first institution.
3x is the second institution.
From the problem, we know that the sum of the two institutions is 630:
7x + 3x = 630
Simplifying the left side, we get:
10x = 630
Dividing both sides by 10, we get:
x = 63
Now that we know the value of x, we can find the number of each institution:
First institution = 7x = 7(63) = 441
Second institution = 3x = 3(63) = 189
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What is -37/76 simplified
Answer:
Already in simplest form. -37/76
Step-by-step explanation:
Nothing changes, it's the most simplified it can be.
answer #
you can't simplify the answer
Mariya was asked to solve StartFraction a over negative 13 EndFraction less-than-or-equal-to negative 16 and then graph the solution. Her work is shown below. In which step, if any, did Mariya make a mistake in her work?
Mariya made a mistake in the third step of her work by multiplying both sides of the inequality by -13 instead of dividing.
What is an inequality?An inequality is a mathematical statement that compares two values or expressions using a symbol such as <, >, ≤, or ≥. It indicates that one value is not equal to another, and may be greater than or less than it.
This resulted in a change of the direction of the inequality from less than or equal to (≤) to greater than or equal to (≥). Therefore, the correct inequality would be a ≥ -13 × -16. The solution of this inequality is a ≥ 208.
When graphing the solution, the solution set will include all values of a greater than or equal to 208, which can be represented by a shaded line to the right of the point 208 on a number line.
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HELP NEEDED QUICK!!
Directions: Calculate the following simple interest problems. Write your answers in the space provided. Use the formula I = P × R × T and round your answers to the nearest cent or the nearest tenth of a percent. Use four decimal places for fractions of time.
(a) I = ?, P = $500, R = 8%, T = 3 months (3/12)
simple interest: $
(b) I = ?, P = $50, R = 12%, T = 1 month (1/12)
simple interest:
cents
(c) I = ?, P = $1,000, R = 18%, T = 24 months (24/12)
simple interest: $
(d) I = ?, P = $600, R = 15%, T = 60 days (60/360)
simple interest: $
(use .1667)
(a) The simplest interest is $12.
(b) The simplest interest is 5 cents.
(c) The simplest interest is $360.
(d) The simplest interest is $15.
What is the interest rate?
In relation to the amount lent, deposited, or borrowed, the amount of interest due each period is expressed as an interest rate. The total interest on a sum lent or borrowed is determined by the principal amount, the interest rate, the frequency of compounding, and the period of time over which it is lent deposited, or borrowed.
The formula of simple interest is I = P × R × T
(a) Given that P = $500, R = 8% = 0.08, T = 3 months = (3/12) years = 1/4 years
The simple interest is
500 × 0.08 × (1/4)
= $12
(b) Given that P = $50, R = 12% = 0.12, T = 1 months = (1/12) years
The simple interest is
50 × 0.12 × (1/12)
=$0.5
= 5 cents
(c) Given that P = $1,000, R = 18% = 0.18, T = 24 months = (24/12) years = 2 years
The simple interest is
1000 × 0.18 × 2
=$360
(d) Given that P = $600, R = 15% = 0.15, T = 60 days = (60/360) years
The simple interest is
600 × 0.15 × (60/360)
=$15
P is principal, R is known as rate of interest.
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8 to 2 but double the equivalent ratio
Answer:
Step-by-step explanation:
8:2 doubled is 16:4
You want to determine the total amount of data stored on a server.
User A has 3550 GB of data stored on the server.
User B stores 4000 GB of data.
User C stores 2450 GB.
User D stores 1010 GB of data.
User E stores 7000 GB of data on the server.
Without using a calculator, use the properties of operations to determine the total amount of data stored on the server.
A
1801 GB
B
18,010 GB
C
19,010 GB
D
1901 GB
One way to approach this problem without using a calculator is to group the numbers by their place value (i.e., thousands, hundreds, tens, and ones), and then add them together.
For example,
For thousands:
User A has 3 thousands,
User B has 4 thousands,
User C has 2 thousands,
User E has 7 thousands.
There are no thousands for User D.
So the total number of thousands is 3+4+2+7 = 16 thousands.
For hundreds:
User A has 550 hundreds (since 3550 = 3 x 1000 + 550),
User B has 0 hundreds (since 4000 is a multiple of 1000),
User C has 450 hundreds (since 2450 = 2 x 1000 + 450),
User D has 10 hundreds,
User E has 0 hundreds (since 7000 is a multiple of 1000).
So the total number of hundreds is 550+0+450+10+0 = 1010 hundreds.
For tens and ones:
Since all the numbers are in thousands or hundreds, there are no tens or ones to add.
Therefore, the total amount of data stored on the server is:
16 thousands + 1010 hundreds = 16,100 GB
Colby is making a home video consisting of a 5-minute introduction followed by several short skits. Each skit is 6 minutes long. If Colby's video is 143 minutes long, how many skits are in his video?
answer: 23
explanation - 143 - 5 = 138
(total time - the intro)
138 / 6 = 23
(remaining time divided by skit time)
For annually compounded interest, what rate would result in a single investment doubling in 3 years?
Work Shown:
[tex]A = P*(1+r/n)^{n*t}\\\\2P = P*(1+r/1)^{1*3}\\\\2 = (1+r)^{3}\\\\(1+r)^{3} = 2\\\\1+r = \sqrt[3]{2}\\\\r = -1+\sqrt[3]{2}\\\\r \approx 0.25992\\\\[/tex]
That converts to 25.992% after moving the decimal point two spots to the right. Round this value however your teacher instructs.
a rectangular pizza, 35 cm by 70 cm, is cut into 24 square pieces. two round pizzas, each cut into 12 slices, also give 24 pieces. so that the pizza slices are the same size, what must be the diameter of the round pizzas? round to the nearest tenth. don't include units.
The diameter of each round pizza should be approximately d ≈ 2r ≈ 39.6
Rounding to the nearest tenth, we get a diameter of 39.6 cm.
The rectangular pizza has an area of:
35 cm x 70 cm = 2450 [tex]cm^2[/tex]
Dividing the area by 24 gives us the area of each square piece:
[tex]2450 cm^2 / 24 = 102.08 cm^2[/tex]
For the round pizzas, each slice is a sector of the circle, and the area of each sector is given by:
[tex]A = (θ/360)\pi r^2[/tex]
where θ is the angle of the sector in degrees, and r is the radius (half the diameter) of the circle.
Since each round pizza is cut into 12 slices, each slice covers an angle of:
θ = 360/12 = 30 degrees
We want the area of each slice to be equal to the area of each square piece from the rectangular pizza, which is 102.08 [tex]cm^2[/tex]. Therefore, we can set up the equation:
[tex](30/360)\pi r^2 = 102.08[/tex]
Simplifying, we get:
[tex]\pi r^2/12 = 102.08[/tex]
[tex]\pi r^2 = 1224.96[/tex]
[tex]r^2[/tex] ≈ 391.2
r ≈ 19.8
Therefore, the diameter of each round pizza should be approximately:
d ≈ 2r ≈ 39.6
Rounding to the nearest tenth, we get a diameter of 39.6 cm.
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the average bmi (body mass index) value of children 9 years old is 18.4 with a standard deviation of 4.5. if it is known that the distribution is approximately normal, what is the probability that a randomly selected 9-year-old has a bmi greater than 26.8? give your answer to three decimal places.
The probability that a randomly selected 9-year-old has a BMI greater than 26.8 is 0.031. Hence, the answer is 0.031.
What is the formula to calculate standard deviation?
The formula to calculate standard deviation is:
SD = sqrt [(Σ(xi - μ)²) / N]
Where, SD = standard deviation
x = individual data points
μ = mean of the sample
N = sample size
What is the formula for z-score?
The formula for z-score is:
z = (x - μ) / σ
Where,
z = z-score
x = raw score
μ = mean of the population
σ = standard deviation of the population
Given that, The average BMI (body mass index) value of children 9 years old is 18.4 with a standard deviation of 4.5.
To find the probability that a randomly selected 9-year-old has a BMI greater than 26.8, we have to find the z-score.
z = (x - μ) / σz = (26.8 - 18.4) / 4.5z = 1.86
Now, we have to find the probability from the z-table, which is 0.9686. But we have to find the probability greater than 26.8, so we have to subtract it from 1.1 - 0.9686 = 0.0314 ≈ 0.031
Therefore, the probability that a randomly selected 9-year-old has a BMI greater than 26.8 is 0.031. Hence, the answer is 0.031.
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John and Max work at a sandwich shop. John can make 15 sandwiches per hour, and Max can make 10 sandwiches per hour. Max worked 5 more hours than John and they made a total of 150 sandwiches that day. Determine the number of hours Max worked and the number of hours John worked.
1. Name the 2 variables that are being related in this situation. 2. Write a system of equations to represent the number of hours Max and John worked 3. Solve the system using substitution 4. Interpret the solution of the solution.
20 pts.
Therefore , the solution of the given problem of variable comes out to be John worked for four hours and Max worked for nine.
Variable is what?A variable is a quality that can be evaluated expression and have various values. Height, age, salary, province of birth, academic status, and style of residence range are a few examples of variables.
Here,
Let's use the variables "J" and "M" to denote the respective number of hours done by John and Max. Next, we can formulate the formulae in the following system:
=> J + 5 = M (Max put in five hours more than John did.)
=> 15J + 10M = 150 (They prepared a total of 150 sandwiches) (They made a total of 150 sandwiches)
This system can be resolved using replacement. By deducting 5 from both sides of the first equation, we can find "J" in terms of "M":
=> J = M - 5
Now, we can enter the following formula in place of "J" in the second equation:
=> 15J + 10M = 150
Using J = M - 5 as a substitute, 15(M - 5) Plus 10M = 150.
=> 15M - 75 + 10M Equals 150 (distributing the 15) (distributing the 15)
=> 25M = 225 (adding 75 to both ends) (adding 75 to both sides)
=> M = 9
Max thus put in nine hours of labour. John worked a total of __ hours, so we can re-enter ___ into the first calculation as follows:
=> J + 5 = M
=> J + 5 Equals 9 (M replaced with 9)
=> J = 4
John spent 4 hours at work.
The answer is that John worked for four hours and Max worked for nine.
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The number 0.08 is 1/10 of which value.
Answer: 0.008
Step-by-step explanation:
1/10 of 0.08
of is the same as multiplying
1/10 x 0.08= 1/10 x 8/100= 8/1000
8 divided by 1000= 0.008
Theorem: For any real number x, x+∣x−5∣≥5 In a proof by cases of the theorem
A. x≤0 B. x≤5 C. x<5 D. x<0
The theorem holds for all real numbers x and the other case is that x < 5.
option C.
What is a real number?A real number is a value that represents a quantity along a continuous number line. Real numbers can be either rational or irrational. Rational numbers are numbers that can be expressed as a ratio of two integers, such as 1/2, 3/4, or -7/8.
For the given question, if one of the cases is that x > 5, we can determine the other case by considering the definition of absolute value:
If x > 5, then ∣x-5∣ = x-5 (since x-5 is positive),
so x + ∣x-5∣ = x + (x-5) = 2x - 5
which is clearly greater than or equal to 5.
If x < 5, then ∣x-5∣ = -(x-5) (since x-5 is negative),
so x + ∣x-5∣ = x - (x-5) = 5,
which is also greater than or equal to 5.
Therefore, the theorem holds for all real numbers x.
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The complete question is below:
Theorem: For any real number x, x+∣x−5∣≥5. In a proof by cases of the theorem, there are two cases. One of the cases is that x > 5.
What is the other case?
A. x≤0
B. x≤5
C. x<5
D. x<0
Add. Express your answer in standard form. (Highest exponent first and then descending order)
[tex](2x^{4} -5x^{3} -7) + (-5x^{5} -5x^{2} +9x+17)[/tex]
Answer:
The answer would be -5x^5 + 2x^4 - 5x^3 - 5x^2 + 9x + 10.
A herbalist has 40 oz of herbs costing $4 per ounce. How many ounces of herbs costing $1 per ounce should be mixed with these 40 oz of herbs to produce a mixture costing $2. 20 per ounce?
60 ounces of herbs costing $1 per ounce should be mixed with these 40 oz of herbs to produce a mixture costing $2. 20 per ounce
Let x be the amount of herb that costs $1.00/oz and y be the total amount of the mixture that costs $2.20/oz.
The total weight of the mixture is:
= y=x+40
The total cost of the mixture is:
4(40) + 1x = 2.20y
160 + x = 2.20 (x + 40) .......Substitute y using the expression from the first equation
160 + x = 2.20x + 88 .........Subtract 160 and x from both sides
1.20x = 72 .........Divide both sides by 1.20
x = 60
The herbalist must mix 60 oz of the herb that costs $1.00/oz to the mixture, therefore we can say that:
60 ounces of herbs costing $1 per ounce should be mixed with these 40 oz of herbs to produce a mixture costing $2. 20 per ounce
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Philip's meal costs $14.50 at a local restaurant. The server did their job very well and Philip would like to a 20% tip. What amount of money should he leave as a tip?
Answer:
$2.90
Step-by-step explanation:
We know
Philip's meal costs $14.50 at a local restaurant. Philip would like to a 20% tip
20% = 0.2
14.50 x 0.2 = $2.90
So, he should leave $2.90 as a tip.
Name the type of angle indicated
Answer: Acute
Step-by-step explanation:
Acute - Less than 90 degress
Straight - Exactly 180 degrees
Obtuse - More than 90 degrees
Right - Exactly 90 degrees
Note: Round intermediate calculations to at least 4 decimal places and your final answers to 2 decimal places. c-2. Based on the z-score standardized Manhattan distance values, identify the pair of the first three employees that are most simiar. Empioyees 1 and 3 Employeos 1 and 2 Employees 2 and 3 Undetermined, because the Manhattan distance values give inconclusive results.
The pair οf emplοyees 1 and 3 have the smallest Manhattan distance, indicating that they are the mοst similar based οn the z-scοre standardized Manhattan distance values. Therefοre, the answer is Emplοyees 1 and 3
What Is Z-Scοre?The relatiοnship between a value and a set οf values' mean is described by the statistical measurement knοwn as the Z-scοre.
Manhattan distance = [tex]|z^1 - z^2| + |z^3 - z^4| + ... + |zn-1 - zn|[/tex]
The z-scοres fοr each variable are calculated as fοllοws:
z-scοre = (x - mean) / standard deviatiοn
Emplοyee 1:
Age z-scοre = (25 - 27.33) / 1.2472 = -1.8616
Salary z-scοre = (48000 - 51666.67) / 9930.77 = -3.6915
Emplοyee 2:
Age z-scοre = (35 - 27.33) / 1.2472 = 6.1420
Salary z-scοre = (72000 - 51666.67) / 9930.77 = 2.0505
Emplοyee 3:
Age z-scοre = (27 - 27.33) / 1.2472 = -0.2645
Salary z-scοre = (53000 - 51666.67) / 9930.77 = 1.4256
Distance between emplοyees 1 and 2: |(-1.8616) - 6.1420| + [(-3.6915) - 2.0505] = 13.3956
Distance between emplοyees 1 and 3: |(-1.8616) - (-0.2645)| + [(-3.6915) - 1.4256] = 4.7236
Distance between emplοyees 2 and 3: |(6.1420) - (-0.2645)| + [(2.0505) - 1.4256] = 8.5020
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Calculate the mode of the data set {5, 8, 2, 5, 11, 2, 5, 13}
PLS HELP
Answer:
5
Step-by-step explanation:
The mode is the most commonly occurring number in a set of numbers. In this one it is 5.
how do you calculate volume
Answer:
Height*width*depth= volume
A line has a slope of –12 and passes through the point (6,–9). Write its equation in slope-intercept form.
Answer: y = -12x + 63
Step-by-step explanation:
The slope-intercept form of a linear equation is y = mx + b, where m is the slope and b is the y-intercept. We are given the slope of the line, which is -12, and a point that the line passes through, which is (6,-9).
Using the point-slope form of a linear equation, we have:
y - (-9) = -12(x - 6)
Simplifying this equation, we get:
y + 9 = -12x + 72
Subtracting 9 from both sides, we get:
y = -12x + 63
Therefore, the equation of the line in slope-intercept form is y = -12x + 63.
When you are factoring a polynomiat and the signs of the polynomial are as follows: a x 2
+bx⋅c, the factors will have the following signs: a (t)(t) b (x) (+x) one of each d none of the above Question 2 (1 point) Give one of the prime factors of: x 2
−4x+12 a. (x−4) b (x+4) c) (x−6) d (x+6)
However, the response would be (x - 2 + 2i2)(x - 2 - 2i2) if you are searching for factors with real coefficients.
what is polynomial ?A polynomial is a mathematical expression made up of variables, factors, one or more terms, and non-negative integer exponents used in addition, subtraction, multiplication, and multiplication. Any mathematical object, including numbers, variables, and even functions, can be represented by the variables in a polynomial. In the polynomial equation 3x2 + 2x - 5 as an illustration, the coefficients are 3, 2, and -5, the variable is x, and the exponent is 2. This polynomial has the terms 3x2, 2x, and -5, each of which is denoted by a plus or negative sign. Monomials have one term, binomials have two terms, trinomials have three terms, and so on. Polynomials can be categorized based on how many terms they contain.
given
The solution to the first question is "none of the above," as the signs of the terms in a polynomial are not what determine the signs of the factors.
(x - 2i)(x + 2i) is one of the prime factors of x2 - 4x + 12, where I is the imaginary number.
However, the response would be (x - 2 + 2i2)(x - 2 - 2i2) if you are searching for factors with real coefficients.
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Answer this ASAP will give the brainliest answer
Given that y = 8 cm and θ = 25°, work out x rounded to 1 DP.
The diagram is not drawn accurately.
Answer: x = 18.9 to 1dp
Step-by-step explanation: Using SOH CAH TOA,
Sin 25 = 8/x
Making x subject of the formula:
x = 8/Sin 25
x = 18.92961267
x = 18.9 to 1dp
Units of Capacity
Customary
System Units
1 gallon
1 quart
1 cup
Metric System Units
3.79 liters
0.95 liters
0.237 liters
How many centiliters are in 5 quarts?
quarts → liters → centiliters
->
a=
b=
C=
d=
5 quarts a C
1
-x-x=475 cL
=475
b d
After answering the provided question, we can conclude that As a result, expression 5 quarts contain 473.176473 centilitres. It is 473 cL rounded to the nearest centilitre
what is expression ?An expression in mathematics is a collection of manifestations, digits, and transnational corporations that resemble a significant correlation or regimen. A square root, a mutable, or a mix of the two can be used as an expression. Mathematical operators include addition, subtraction, pervasiveness, division, and exponentiation. Expressions are widely used in arithmetic, mathematics, and shape. They are used in the representation of mathematical formulas, the solution of equations, and the simplification of mathematical relationships.
To convert 5 quarts to centilitres, first convert it to litres, then to centilitres.
1 gallon = 0.946352946 litres (conversion factor from customary system)
5 quarts equals 5 x 0.946352946 litres equals 4.73176473 litres
100 centilitres = 1 litre (conversion factor from metric system)
4.73176473 litres = 4.73176473 multiplied by 100 centilitres per litre = 473.176473 centilitres
As a result, 5 quarts contain 473.176473 centilitres. It is 473 cL rounded to the nearest centilitre.
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A school supplier sells boxes of A4 paper for £4, and offers a £2 discount on any order paid for in advance. Write the formula the supplier would use for calculating what to charge for any order paid in advance. Use n to represent the number of boxes purchased.
When calculating the price of an order that has been paid in advance, the school supplier will use the following formula:
4n - 2
The ordering cost formula is useful for calculating the economic order quantity and gives businesses insight into how
much of an item is necessary to meet customer demand and fulfill sales goals.
These ordering costs can include shipping fees, unexpected transportation costs, inspection fees and other expenses
necessary to acquire inventory products. Essentially, any money your company spends to place and receive inventory
orders accounts for the purchasing and ordering costs.
Where n represents the number of boxes purchased.
The school supplier sells boxes of A4 paper for £4, and a £2 discount is given on any order paid for in advance.
Formula for calculating what to charge for any order paid in advance:
To calculate the price for an order paid in advance, the formula 4n - 2 should be used.
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