Answer:
Step-by-step explanation:
Inverse variation functions have the form y = k / x, where k is a constant.
When k > 0, the graph of the inverse variation function is a hyperbola that opens upwards or downwards, depending on the sign of k. When k > 0, the hyperbola opens upwards and the two branches of the hyperbola move away from the x-axis as x increases. This means that as x increases, the value of y decreases. When x approaches 0 from the right, y approaches positive infinity, and when x approaches 0 from the left, y approaches negative infinity.
On the other hand, when k < 0, the graph of the inverse variation function is a hyperbola that opens upwards or downwards, depending on the sign of k. When k < 0, the hyperbola opens downwards and the two branches of the hyperbola move toward the x-axis as x increases. This means that as x increases, the value of y increases. When x approaches 0 from the right or left, y approaches negative infinity.
In both cases, the inverse variation function is undefined for x = 0, as division by zero is undefined.
Sales of the smart phone continued to grow exponentially beyond 2011.
In 2010, approximately 39.99 million smartphones of this brand were sold worldwide.
In 2011, approximately 72.9 million smartphones of this brand were sold worldwide.
In which year did the number of smartphones the brand sold exceed 200 million?
Answer: This question can be solved using exponential growth formula:
N = N0 * e^(rt)
Where N is the number of smartphones, N0 is the initial number, r is the growth rate, t is the number of years and e is the base of the natural logarithm (approximately equal to 2.718).
First, we need to find the growth rate:
r = (ln(N/N0)) / t
Using the data from 2010 and 2011:
r = (ln(72.9/39.99)) / 1
Next, we can find the year when the number of smartphones sold exceed 200 million:
N = 200 million
N0 = 39.99 million
t = (ln(N/N0)) / r
t = (ln(200/39.99)) / r
To find the year, we need to add t to the initial year 2010.
The number of smartphones the brand sold exceeded 200 million in the year 2023.
Step-by-step explanation:
Mark Ran 875 miles this year in the track club. Mark Ryan in 52 track meets and ran the same number of miles in each. How many miles did mark run in each track meet? Brainly
Answer:
16.826
Step-by-step explanation:
I think you divide 875 by 52 which is 16.826 correct me if im wrong.
Answer:
16.8 miles in each track meet
Step-by-step explanation:
You divide 875 by 52 to see how many miles Mark ran in each track meet
875/52 = 16.8
largest possible of x and smallest possible value of x
Answer:
A.) 16
B.) 18
Step-by-step explanation:
Mode is the number that shows up the most. For A.) they are saying the mode is 1. We see that for 1, the corresponding number is 17. Since no number can go larger than 17, that means x must be 16.
For B.) they are saying the mode is 2. the corresponding number is X. they want the smallest value possible, so what we do if find the largest number, which is 17, and simply add one
At the Hula Factory, the assembly line produces 212 leis in a batch. The leis are packaged in boxes with 30 each. If 14 batches are made in one day, how many leis will be leftover at the end of it?
Answer:
-2 leis.
Step-by-step explanation:
212 * 14 = 2,968 leis
2,968/30 = 99 boxes
99*30=2970
2968-2970=-2
There is a problem with the wording of this question. There isn't a total so it's really confusing...
what is 60/40 simplified
Answer:
3/2
Step-by-step explanation:
You can divide the numerator and denominator by its GCF(Greatest common factor) which in this case is 20.
60/ 20 = 3
40/20 = 2
3/2
Can someone help me with this and find the amount budgeted
Answer:
Step-by-step explanation:
ok so it is 100 amount budgeted i calculated all of them dont be mad if i did it wrong i am really bad at math and here is a calmng photo to calm you and elp you think
[tex]\sqrt{x}[/tex]What Is a Kilometer in Math?
A kilometer (km) is a unit of length in the metric system, which is based on the meter as the basic unit of length.
It is equal to one thousand meters, or one million centimeters, and is used in many contexts around the world when referring to the measurement of distances between two points.
Kilometers are commonly used in the context of travel, as they are often used to measure the distance between two cities or countries, or to measure the length of a journey or route. In addition, kilometers are often used to measure the depth of bodies of water, and to measure the size of land features such as mountains and valleys.
In mathematics, the kilometer is used to measure the magnitude of certain quantities, such as the speed of an object or the acceleration of a body. It is also used to measure the size of certain objects, such as the radius of a circle or the length of a line.
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A kilometer is a unit of length in the metric system. In mathematics, a kilometer is a unit of length used to measure distance.
It is part of the metric system, which is the most widely used system of measurement in the world. A kilometer is defined as 1000 meters. This makes it a convenient unit of measurement for large distances, such as those between cities, or for measuring the length of roads and highways.
In mathematical calculations involving distances, kilometers can be used to express the length of a segment or the distance between two points. They can also be converted to other units of length, such as meters, centimeters, or miles, by using appropriate conversion factors.
In conclusion, a kilometer is a unit of length in the metric system that is used to measure large distances in mathematics and in everyday life.
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Please solve both questions 6 and 7
Answer:
6. 4x + 28 + x + 19 + 3x + 13
x = 15
7. x + 123 + 113 + 97 + 90 = 540
x = 117
Step-by-step explanation:
6. 4x + 28 + x + 19 + 3x + 13 = 180
8x + 60 = 180
8x = 120
x = 15
7. x + 123 + 113 + 97 + 90 = 540
x + 423 = 540
x = 117
The sum of two numbers is 33 and the difference is 9. What are the numbers?
Answer:
21 & 12
Step-by-step explanation:
let the sum of x and y be 33.. so,
x + y = 33
x - y = 9
x = 9 + y
x + y = 33
9 + y + y = 33
9 + 2y = 33
2y = 24
y = 24/2
y = 12
similarly,
x + y = 33
x + 12 = 33
x = 21
hence, sum: 21 + 12 = 33
difference : 21 - 12 = 9
Trevor pet goat weighed 6 3/8 pounds when it was born. By age 3, the goat weighed 8 times as much. Fill each box with a number or symbol from the list to show how to find the weight of Trevor goat at age 3. 8 3/8 8 3 6 3/8 + x are the symbols
The weight of Trevor's goat will be 51 pounds at age 3.
We can use the following equation to calculate the weight of Trevor's goat at age 3,
Weight at age 3 = 6 3/8 × 8
First, we require to convert 6 3/8 to an improper fraction, so we multiply 6 by 8 to get 48 and then add the numerator 3 to get 51. So, 6 3/8 can be composed as 51/8.
Next, we multiply 51/8 by 8 to calculate the weight at age 3,
51/8 × 8 = 408/8 = 51
Therefore, the weight of Trevor's goat will be 51 pounds at age 3.
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--The given question is incomplete; the complete question is
"Trevor's pet goat weighed 6 3/8 pounds when it was born. By age 3, the goat weighed 8 times as much. Fill each box with a number or symbol from the list to show how to find the weight of Trevor's goat at age 3."--
To evaluate 8^2/3 find
To evaluate [tex]8^{\frac{2}{3} }[/tex] first find the square of 8 and then take the cube root.
What are exponents?The way of representing huge numbers in terms of powers is known as an exponent. Exponent, then, is the number of times a number has been multiplied by itself.
Depending on the powers they possess, many rules of exponents are given.
Law of Multiplication: Exponents should be added while keeping the base constant when multiplying like bases.
Exponents should be multiplied while bases are kept constant when bases are raised by a power of two or more.
Division Rule: When dividing like bases, maintain the base constant and deduct the exponent of the denominator from the exponent of the numerator.
The given value can be written as:
[tex]8^{\frac{2}{3} } = \sqrt[3]{8^{2} }[/tex]
Hence, to evaluate [tex]8^{\frac{2}{3} }[/tex] first find the square of 8 and then take the cube root.
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At a height of n metres above sea level, the atmospheric pressure is Pn
millibars.
At a height of (n + 1000) metres above sea level, the atmospheric pressure is
P(n + 1000) millibars
where P(n + 1000) = 0.88Pn
At sea level, the atmospheric pressure is 1013 millibars.
Calculate the atmospheric pressure at a height of 3000 metres above sea level.
Give your answer correct to 3 significant figures.
Pressure at 3000 meters above sea level will be 690.33 millibars.
What is the function?A relationship between a group of inputs and one output is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function. Typically, f(x), where x is the input, is used to represent a function.
Given, At a height of n meters above sea level, the atmospheric pressure is Pn millibars. At a height of (n + 1000) meters above sea level, the atmospheric pressure is P(n + 1000) millibars.
where,
P(n + 1000) = 0.88Pn
at n = 0
P(1000) = 0.88 P(n = 0)
Since,
P(n = 0) is 1013 milibar
thus,
P(1000) = 0.88 * 1013
At n = 1000
P(1000 + 1000) = 0.88 P(n = 1000)
P( 2000) = 0.88 * 0.88 *1013
at n = 2000
P(2000 + 1000) = 0.88 P(n = 2000)
P( 3000) = 0.88 *0.88* 0.88 *1013
Thus,
P(3000) = 690.33
Therefore, Pressure at 3000 meters above sea level could be 690.33 millibars.
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Meena owns a small business selling bagels. She knows that in the last week 35
customers paid cash, 12 customers used a debit card, and 17 customers used a credit
card.
If next week, she is expecting 700 customers, about how many would you expect to
pay with a debit card? Round your answer to the nearest whole number.
131 customers would expect to pay with a debit card out of 700 Customers.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
customers paid by cash=35
customers used a debit card = 12
customers used a credit card = 17
If she is expecting 700 customers then number of customers used Debit card will be
= 700 x 12/ (35+12+17)
= 700 x 12/64
= 131.25
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a woman making $2500 per month has her salary reduced by 10% because of sluggish sales. one year later, after a dramatic improvement in sales, she is given a 20% raise over her reduced salary. find her salary after the raise. g
After the raise, the salary of woman becomes $2700.
Salary Reduction and RaiseThe answer was determined through simple arithmetic calculations.
First, the initial salary of $2500 was reduced by 10%, which is calculated as $2500 * 0.1 = $250.So the new salary after the reduction was $2500 - $250 = $2250.Next, a 20% raise was given over the reduced salary of $2250, which is calculated as $2250 * 0.2 = $450.Finally, the raise was added to the reduced salary, resulting in $2250 + $450 = $2700.So, the woman's salary after the raise is $2700.This method of calculation can be applied to any similar scenario where an initial salary is reduced by a certain percentage and then increased by another percentage. The formula used can be generalized as:
Final Salary = (Initial Salary - Initial Salary * Reduction Percentage) * (1 + Raise Percentage)
It's a simple and straightforward method that can be easily applied to find the final salary in similar cases.
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if gas costs $3.25 per gallon, and it takes 21 seconds to pump one gallon of gas, how long will it take to pump $23.36 worth of gas (in seconds)?
We need to know how many gallons of gas $23.36 will buy, so we divide the amount by the cost per gallon: $23.36 ÷ $3.25 per gallon = 7.20 gallons.
Once we know how many gallons of gas we are buying, we can then find out how long it will take to pump that amount of gas. To do that, we multiply the number of gallons by the time per gallon: 7.20 gallons × 21 seconds/gallon = 151.2 seconds.
So, the answer to the question is 151.2 seconds, which is the total time it will take to pump $23.36 worth of gas at $3.25 per gallon and 21 seconds per gallon.
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how many lists of three elements can we make using the numbers 1, 2, 3, 4, and 5, if repetition is allowed? choose all that apply.
The solution is, 35, lists of three elements can we make using the numbers 1, 2, 3, 4, and 5, if repetition is allowed.
What is combination?In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter.
here, we have,
Given data:
{1 ,2, 3 ,4, 5}
Formula for combinations is used since the order does not matter and repetition is allowed.
nCr = (n + r -1) /(r! * (n-1)!)
where n is the total number of items and r is the items to be picked
now, we get,
5C3 = (5 + 3 - 1)! /(3! * (5 -1)!
5C3 = 7!/(3! *4!) Simplifying the factorials)
5C3 = 5040/(6*24)
5C3 =5040/144
5C3 = 35
Hence, The solution is, 35, lists of three elements can we make using the numbers 1, 2, 3, 4, and 5, if repetition is allowed.
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Please help thank you
Answer:
∠ A = 138° , ∠ C = 75°
Step-by-step explanation:
ABCD has parallel bases and is a trapezium
each lower base angle is supplementary to the upper base angle on the same side.
∠ A + 42° = 180° ( subtract 42° from both sides )
∠ A = 138°
∠ B + ∠ C = 180 , that is
12x - 3 + 9x - 6 = 180
21x - 9 = 180 ( add 9 to both sides )
21x = 189 ( divide both sides by 21 )
x = 9
Then
∠ C = 9x - 6 = 9(9) - 6 = 81 - 6 = 75°
the president of state university wants to forecast student enrollments for this academic year based on the following historical data: year enrollments 5 years ago 15,000 4 years ago 16,000 3 years ago 18,000 2 years ago 20,000 last year 21,000 what is the forecast for this year using exponential smoothing with alpha
The forecast for this year (F(6)) is 18,625. Therefore, the correct answer is 18,625.
Exponential smoothing is a time series forecasting method that uses a weighted average of past observations to make predictions. In this case, the weight assigned to each observation is determined by a smoothing parameter, alpha, which is a value between 0 and 1.
The formula for exponential smoothing with alpha = 0.5 is given by:
F(t) = alpha * Y(t) + (1 - alpha) * F(t-1)
where F(t) is the forecast for time t, Y(t) is the actual observation at time t, and F(t-1) is the forecast for the previous time period.
Starting with the forecast for two years ago, we can use this formula to make a forecast for each year until this academic year.
F(2) = 0.5 * 20,000 + (1 - 0.5) * 16,000 = 18,000
F(3) = 0.5 * 18,000 + (1 - 0.5) * 18,000 = 18,000
F(4) = 0.5 * 16,000 + (1 - 0.5) * 18,000 = 17,000
F(5) = 0.5 * 15,000 + (1 - 0.5) * 17,000 = 16,250
F(6) = 0.5 * 21,000 + (1 - 0.5) * 16,250 = 18,625
So the forecast for this year (F(6)) is 18,625. Therefore, the correct answer is 18,625.
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Complete question:
The president of State University wants to forecast student enrollment for this academic year based on the following historical data: Year Enrollments 5 years ago 15,000 4 years ago 16,000 3 years ago 18,000 2 years ago 20,000 Last year 21,000 What is the forecast for this year using exponential smoothing with alpha = 0.5, if the forecast for two years ago was 16,000?
18,750
19,500
21,000
22,650
None of the above
2b x b
is this answer only 2b ^ 2 or is there any other answer without using exponentiation
The answer to the expression 2b x b is simply 2b^2. Exponentiation is a mathematical operation that raises a number to a power, and in this case, b is raised to the power of 2.
Alternatively, if exponentiation is not allowed, the answer to the expression is simply 2b * b, which can be simplified to 2b^2 as well.
So, the answer to the expression 2b x b is 2b^2, regardless of whether or not exponentiation is used.
The expression 2b x b represents the product of two scalars, 2 and b, multiplied by a scalar b.
The expression could represent a variety of quantities in mathematics and science, including the area of a rectangle, the volume of a cube, or the kinetic energy of an object, among others.
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A composite figure is shown.
Which of the following represents the total area of the figure?
Answer:
16.425 in²
Step-by-step explanation:
Surface area of composite figure:Area of upper triangle:
b = 2.5 in ; h = 2.3 in
[tex]\sf \boxed{\bf Area \ of \ triangle = \dfrac{1}{2}bh}[/tex]
[tex]\sf =\dfrac{1}{2}*2.5 * 2.3\\\\ =\dfrac{5.75}{2}\\\\=2.875 \ in^2[/tex]
Area of bottom triangle:
h = 5.2 - 2.3
= 2.9 in
[tex]\sf Area \ of \ bottom \ triangle = \dfrac{1}{2}*3*2.9[/tex]
= 4.35 in²
Area of rectangle:
Area of rectangle = l * w
= 4 * 2.3
= 9.2 in²
Area of composite figure = area of upper triangle + area of bottom triangle + area of rectangle
= 2.875 + 4.35 + 9.2
= 16.425 in²
Lesley's fruit salad contains 40% grapes. Which figure represents 40%?
A. A hundred grid with five columns of ten squares shaded
B. A hundred grid with four columns of seven squares shaded
C. A hundred grid with three columns of ten squares shaded
D. A hundred grid with four columns of ten squares shaded
Answer:
The answer is D
Step-by-step explanation:
Percentages can be represented in Hundred Grid. It is a 10*10 grid that helps solves problems like yours.
In your case, it says 'Which figure represents 40% ?'
This means that you must shade 4 whole columns.
Because number 1, Each row or column contains 10 squares which can also represent 10%. And if you were to shade 2 rows or columns that would mean it is 20%.
So to sum it up:4 whole columns = 40% out of 100
So a hundred grid with 4 columns of ten square shaded should be your answer.
I'm always happy to help!
In a group of 50 students, 20 like only Maths and 15 like only Science. If the number of students who do not like any of the two subjects is double of the number of students who like both subjects, find the number of students who like at most one subject by using a Venn-diagram.
To solve this problem using a Venn diagram, we need to start by drawing a rectangle to represent the group of 50 students, and then draw two overlapping circles to represent the subjects of Math and Science. Let's label the regions of the Venn diagram as follows:
M: Students who like MathS: Students who like ScienceMS: Students who like both Math and ScienceNeither: Students who like neither Math nor ScienceWe know that 20 students like only Math, 15 students like only Science, and the number of students who like both subjects is unknown. We also know that the number of students who like neither subject is double the number of students who like both subjects. Let's use this information to fill in the Venn diagram:
The number of students who like at least one subject is the sum of the students who like only Math, the students who like only Science, and the students who like both subjects: 20 + 15 + MS.The number of students who like neither subject is double the number of students who like both subjects: 2MS.We can set up an equation using this information:
20 + 15 + MS + 2MS = 50
Simplifying this equation, we get:
3MS = 15
MS = 5
Now we can fill in the Venn diagram:
M MS
\ /
\/
/ \
S----MS
We know that MS = 5, so the number of students who like at most one subject is:
20 (like only Math) + 15 (like only Science) + MS (like both subjects) = 20 + 15 + 5 = 40.
Therefore, 40 students in the group of 50 like at most one subject.
Caleb is comparing the growth of plants using two different fertilizers Use the measurement of the center from the box plots to make an inference about the data
Part A:
Based on the medians, the plants in Group A grew less on average, as compared to the plants in Group B.
Part B:
The range and IQR are greater in Group B as compared to Group A, so there is less variability in the growth of plants in Group B.
What is the box-and-whisker plot?A box and whisker plot displays a "box" with its left edge at Q₁, right edge at Q₃, "center" at Q₂ (the median), and "whiskers" at the maximum and minimum.
Given:
Caleb is comparing the growth of plants using two different fertilizers.
The box-and-whisker plot is given.
From the diagram, we can clearly see that the median of A is less than the median of B.
Part A:
Based on the medians, the plants in Group A grew less on average, as compared to the plants in Group B.
Part B:
The range and IQR are greater in Group B as compared to Group A, so there is less variability in the growth of plants in Group B.
Therefore, the blanked words are given above.
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If −8x+6y=4 is a true equation, what would be the value of −8x+6y+6?
the value of the algebraic equation −8x+6y+6 will be 10.
What is algebraic Expression?Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the phrase 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +.
Given, −8x+6y=4 is a true equation
To find the value of the equation −8x+6y+6
=> −8x+6y+6
Since −8x+6y = 4 given
Thus,
=> 4 + 6
=> 10
Therefore, the value of the algebraic equation −8x+6y+6 will be 10.
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if 3x-9=6 whats the value of x
Answer:
the value of x is 5
Step-by-step explanation:
3x=6+9
3x=15
x=5
Please helpppp
graph 0.2 and its opposite
graph 9 and its opposite
Answer:
I need the answer tooo
A manufacturer of bolts has a quality-control policy that requires it to destroy any bolts
that are more than 2 standard deviations from the mean. The quality-control engineer
knows that the bolts coming off the assembly line have mean length of 12 cm with a
standard deviation of 0.10 cm. For what lengths will a bolt be destroyed?
The lengths that the bolt will be destroyed are given as follows:
Less than 11.8 cm.More than 12.2 cm.How to obtain the lengths?The lengths are obtained applying the proportions in the context of this problem.
Considering the mean length of 12 cm, and the standard deviation of 0.1 cm, the length that is 2 standard deviations below the mean is given as follows:
12 - 2 x 0.1 = 11.8 cm.
The length that is 2 standard deviations above the mean is given as follows:
12 + 2 x 0.1 = 12.2 cm.
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Consider APQR in the figure below.
The perpendicular bisectors of its sides are SV, TV, and UV. They meet at a single point V.
(In other words, V is the circumcenter of APQR.)
Suppose UV=30, PS= 64, and RV=78.
Find PU, PR, and QV.
Note that the figure is not drawn to scale.
The given values are below:
PU = 72PR = 128QV = 78How to get the valuesNote that point V is the intersection of the three perpendicular bisectors of a triangle which is also the center of the subtriangle circumference
So QV = RV = PV = 78
Point S is the midpoint of PR
So PR = 2,
PS = 2 x 64 = 128.
Because triangle QUV is a right triangle,
QV = 78.
UV= 30
QV^2 + UV^2 = QV^2
Therefore, PU = 72
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An ancient Chinese problem: "A pool of water is 10 feet across, and in the middle of it stood a reed which
projected one foot above the water. When the wind blows the reed over, the top just reached to the edge of
the pool. How deep is the water?" Illustrate and solve. Show all work!
According to the question, the depth of the water is 11 feet.
What is the depth ?The depth of something refers to how deep or far down it goes. It can refer to physical measurements such as the depth of a lake or ocean or the depth of a hole, or to metaphorical measurements such as the depth of knowledge or the depth of emotions. In terms of physical measurements, depth is usually referred to in terms of length or distance.
Let x be the depth of the water
The reed is 11 feet tall (10 feet in the water + 1 foot above the water)
The circumference of the pool is 10π feet
The volume of water in the pool = (circumference x depth) = 10πx
The volume of the reed = (area of base x height) = π(5²) x 11 = 275π
The total volume of the pool and reed = 10πx + 275π
10πx + 275π = 10π(11)
10πx = 110π
x = 11
Therefore, the depth of the water is 11 feet.
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PLEASE HELP ME PLEASE THANK YOU
PART A
Craig went bowling with $35.50 to spend. He rented the shoes for $6.50 and paid $7.25 for each game.WRITE AN EQUATION TO DETERMINE X,THE GREATEST NUMBER OF GAME CRAIG COULD HAVE PLAYED. ONLY WRITE EQUATION HERE
Equation:__________
PART B
Determine what the greatest number of games he can play is. SHOW YOUR WORK
Answer:_________Games
Answer:
A. $6.50 + $7.25x ≤ $35.50
B. 4 games
Step-by-step explanation:
x = number of games played
$6.50 + $7.25x ≤ $35.50
7.25x ≤ 35.5 - 6.50
7.25x ≤ 29
x ≤ 29/7.25
x ≤ 4