First order approximation = (sin(x+dx)/(x+dx)^3 - sin(x)/x^3)/dx and ((sin(x-(2*dx))/(x-(2*dx))3) is a formula for calculating the fourth-order
Function output for the first order approximation is first order approx (x,dx)
(x3*(cos(x)) analytical derivative =
-sin(x)*3*x^2)/x^6;
First order approximation: % forward differencing = (f(x+dx) - f(x))/dx%
first-order approximation = (sin(x)/x3 - sin(x)/x+dx)/(x+dx)3)/dx;
output is equal to Abs(FirstOrderApproximation - AnalyticalDerivative);
end
Function output for the fourth-order approximation is fourth-order approx (x,dx)
(x3*(cos(x)) analytical derivative =
-sin(x)*3*x^2)/x^6;
((sin(x-(2*dx))/(x-(2*dx))3) is a formula for calculating the fourth-order approximation. 8*(sin(x-dx))/(x-dx) + 8*(sin(x+dx))/(x+dx) - ((sin(x+(2*dx))/(x+(2*dx))3))/(12*dx);
output for the error term is abs(approximation of first order - analytical derivative);
end
Know about first-order approximation
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hello can u please answer these questions
a) Work out the minimum number of hikers who could have walked between 8 miles and 19 miles. b) Work out the maximum number of hikers who could have walked between 8 miles and 19 miles.
The maximum and minimum number of hikers from the given frequency table are 17 and 4 respectively.
What is a frequency table?
One approach to display data is in a frequency table. To summarise bigger collections of data, the data are organised and counted. You can examine the distribution of the data across various values using a frequency table.
From the given frequency table, we can see that
Between 0 and 5 miles, there are 3 hikers
Between 5 and 10 miles, there are 4 hikers
Between 10 and 15 miles, there are 7 hikers
Between 15 and 20 miles, there are 6 hikers
Between 20 and 25 miles, there is only 1 hiker.
So the maximum number of hikers between 8 miles and 19 miles is the total number of hikers between 5 and 20 miles = 4 + 7 + 6 = 17
The minimum number of hikers who could have walked between 8 miles and 19 miles is 4 hikers.
Therefore the maximum and minimum number of hikers from the given frequency table are 17 and 4 respectively.
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Find the sum of the first 6 terms of geometric sequence 3, -6, 12, -24,...answer choicesO 63O -63O 66O -66
The sum of the first 6 terms of the geometric sequence 3, -6, 12, -24, ... is -3.
The first 6 terms of the geometric sequence 3, -6, 12, -24, ... can be calculated using the formula for the nth term of a geometric sequence:
[tex]a_n = a_1 * r^{(n-1)}[/tex]
where a_1 is the first term, a_n is the nth term, r is the common ratio, and n is the term number.
For the given sequence, a_1 = 3 and r = -2, so the first 6 terms can be calculated as follows:
[tex]a_2 = 3 * (-2)^{(2-1)} = -6\\a_3 = 3 * (-2)^{(3-1)} = 12\\a_4 = 3 * (-2)^{(4-1)} = -24\\a_5 = 3 * (-2)^{(5-1)} = 48\\a_6 = 3 * (-2)^{(6-1)} = -96\\[/tex]
The sum of the first 6 terms will be = 3 - 6 + 12 - 24 + 48 - 96 = -3
A geometric sequence is a number sequence in which the ratio of any two consecutive terms is always the same.
A geometric sequence has the following general form: a, ar, ar^2, ar^3,...,
where an is the first term of the sequence and r is the common ratio, which is a fixed number that represents the factor by which each term is multiplied to get the next term.
The formula for calculating the nth term of a geometric sequence is:
a_n = a * r(n-1) where n is the term number.
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Rotate this image 180° clockwise around the point (–2, 1):
The rotation of the image given 180° clockwise around the point (-2, 1) gives the image in the second option.
What is Rotation?Rotation is a kind of geometric transformation where a figure or point is rotated by a certain degrees about a given point.
The coordinates of the given image are :
(-1, 1), (-2, 1), (-1, 4) and (-2, 4).
Point of rotation is (-2, 1).
The points are not rotated around the origin.
To make it seem like around the origin, subtract the point of rotation from the points.
So the new points are :
(1, 0), (0, 0), (1, 3) and (0, 3)
Now rotate the image with the new coordinates around the origin 180° clockwise.
Rotation is -180°, which is equivalent to rotation of 180° counterclockwise.
Coordinates (x, y) when rotated 180° clockwise becomes (-x, -y).
New coordinates after rotation about origin are :
(-1, 0), (0, 0), (-1, -3) and (0, -3).
Now add the point of rotation (-2, 1) again.
Points are :
(-3, 1), (-2, 1), (-3, -2) and (-2, -2).
Image with these points is the second option.
Hence the required image is the second option.
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Find three consecutive integers such that triple the sum of the first two integers is 19 less than larger integer
The three consecutive integers are given as follows:
-4, -3 and -2.
How to obtain the three consecutive integers?The three consecutive integers are obtained using a system of equations, for which the variables are given as follows:
x, y and z.
They are consecutive, thus:
y = x + 1.z = x + 2.Triple the sum of the first two integers is 19 less than larger integer, hence:
3(x + y) = z - 19
Replacing into the equation, the value of x is obtained as follows:
3(x + x + 1) = x + 2 - 19
6x + 3 = x - 17
5x = -20
x = -4.
Hence the remaining integers are -3 and -2.
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write a system of two quadratic equations that has solutions of (-3,-3) and (3,-3)
One system of quadratic equations that has solutions of (-3, -3) and (3, -3) is:
x^2 + y^2 = 18
x + y = 0
You can check that for x = -3 and y = -3, the left-hand side of both equations is equal to the right-hand side, and the same is true for x = 3 and y = -3.
|3y - 7| - 10 = -5 solve for y:
Answer: y=1.25
Step-by-step explanation:
First things first you have to find what is in the bracket things (i don’t know what it’s called) So 3 - 7 is -4y but since it’s absolute it’s going to be 4y.
So now you’ve got 4y - 10 = -5. Your going to want to eliminate 10 so, subtract 10 to both sides giving you 4y = -5
Lastly to get y by itself you need to divide it by its self so, 4y divided by 4. Do it to both sides. This gives you…
Y = 1.25
Line segment AB has endpoints A(-2,3) and B (2,1). Draw the line segment. Then draw the image of the line segment after a reflection over the x-axis.
The coordinates of the end points of the segment after the reflection over the x-axis are given as follows:
A'(-2,-3) and B'(2,-1).
The drawing is given by the image presented at the end of the answer.
How to apply the reflection over the x-axis?The rule for a reflection over the x-axis is given as follows:
(x,y) -> (x, -y).
Meaning that the x-coordinate remains constant, while the y-coordinate is exchanged.
Hence, changing the signal of the y-coordinate, the endpoints after the reflection are given as follows:
A'(-2,-3) and B'(2,-1).
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Determine any point(s) of intersection of the equations algebraically. Then use a graphing utility to verify your results. y = x^2 - x + 1
The point of intersection will be the x, and y coordinates where the two lines cross.
To determine the point(s) of intersection algebraically, we need to find the solutions of the system of equations:
y = x² - x + 1
We can re-arrange the equation to solve for x:
x² - x + 1 - y = 0
We can then use the quadratic formula to find the solutions:
x = (1 ± √(1 - 4(1)(-y)))/2
x = (1 ± √(1 + 4y))/2
Now we can substitute values for y to find the x-coordinates of the points of intersection.
To verify the results, we can use a graphing utility to graph both equations and visually see where they intersect.
The point of intersection will be the x, and y coordinates where the two lines cross.
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Predict how many times you will roll a number less than 5 if you roll a standard number cube 250 times.
If you roll a standard number cube, the times you will roll a number less than 5 if you roll a standard number cube 250 times is 167
How to solved for the predictionGiven that this is a cube since there are three faces with numbers less than 5 (1, 2, and 3)
The result of multiplying the probability by the number of rolls is the expected number of rolls that will be fewer than 5. The number cube is being rolled 250 times.
we would have 2 / 3 * 250
= 166.66667
this is approximately 167
Hence the number of times that we would predict for the number is 167 times.
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The function y=f(x) is graphed below. Plot a line segment connecting the the points on f where x=5 and x=7. Use the line segment to determine the average rate of change of the function f(x) on the interval
Average rate of change is the change in the function per unit in a given interval. The average rate of change from x = 5 to x = 7 is -4.
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, The graph of y = f(x)
See attachment for the points on f(x) that links x = 5 to x = 7
The line segment is represented by a green line
To determine the average rate of change using the line segment; we have the following values.
When x = 5: y = 8
When x = 7: y = 0
So, the average rate of change (m) is:
m = Δy/Δx
Where:
Δy = y₂ - y₁
Δy = 0- 8
Δy = -8
Δx = x₂ - x₁
Δx = 7 -5
Δx = 2
So, we have:
m = Δy/Δx
m = -8/2
m = -4
Hence, the average rate of change from x = 5 to x = 7 is -4
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Complete question:
What is the value of n in the list above?
(1) k < n
(2) The median of the numbers in the list is 10.
A correct answer is an option (C); both statements together are sufficient.
Although k < n, no details are given about the value of k or n; not sufficient.
Since the median of the numbers in the list is 10 and there are 5 numbers in the list, 10 is one of these 5 numbers. Hence, n = 10 or k = 10. If n = 10, then the value of n has been decided. However, if k = 10, then n can be any number that is 10 or less, so the value of n cannot be found out; not sufficient.
Taking (1) and (2) together, if k < n and the median of the list are 10, then 12 and 17 are to the right of the median and the list in ascending order is either 6, k, n, 12, 17 or k, 6, n, 12, 17. In this case, n is the middle number, and since the median is 10, n = 10.
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The complete question is:
Given the list k, n, 12, 6, 17, What is the value of n in the list above?
(1) k < n
(2) The median of the numbers in the list is 10.
Which option is correct?
A) Statement (1) alone is sufficient, but Statement (2) alone is not sufficient.
B) Statement (2) alone is sufficient, but Statement (1) alone is not sufficient.
C) Both statements together are sufficient, but neither statement alone is sufficient.
D) Each statement alone is sufficient.
Complete each equation so that it has infinitely many solution
(Dont mind the exercise underneath)
(Brainliest to correct answer)
The equation with an infinite number of solutions is 12x-x+8+3x=14x+8.
What is equation?An equation is a formula in mathematics that expresses the equality of two expressions by connecting them with the equals sign =. In its most basic form, an equation is a mathematical statement that shows that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign. A mathematical equation that depicts the relationship between two expressions on opposite sides of the sign. It mostly consists of one variable and one equal to symbol. 2x - 4 = 2 is an example.
Here,
12x-x+8+3x=14x+8
The equation so that it has infinitely many solution is 12x-x+8+3x=14x+8.
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A cross between a plant with flowers and a plant with white flowers yielded 47 plants with red flowers and 51 plants with white flowers. What are the genotypes of the parent plant? Explain
The result is close to the 1:1 ratio of red to white flowering plants, so the genotype must be Rr and rr. Option A is correct.
What is Law of DominanceMendel's law of dominance states that in a heterozygote, one trait will conceal the presence of another trait for the same characteristic.
According to this law, the offspring of the first generation from pure breed parents will show only dominant traits.
When a Heterozygous dominant parent mates with a pure recessive parent the ratio of the dominant and recessive characters will be 1:1.
The cross:
r r
R Rr Rr
r rr rr
Therefore, the result is close to the ratio of red to white flowering plants, so the genotype must be Rr and rr.
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The complete option are:
A. The results are close to a 1:1 ratio of plants with red flowers to plants with white flowers. Therefore, the genotypes of the
Rr and ir
B.
The results should yield plants with red flowers and plants with white flowers in a 3:1 ratio due, so the geneotype of each parent is Rr.
The number of offspring was not large enough to produce the expected results
C. The results differ from the predicted values. Therefore, the genotypes of the parents cannot be determined.
D
. The results should show a ratio of 3 plants with white flowers to 1 plant with red flowers, so the genotypes of the parent plants are RR
What is 28/50 in the simplest form
Answer:
Exact Form:
14/25
Decimal Form:
0.56
Step-by-step explanation:
I need help with this (a. b. and c.)
Answer:
Step-by-step explanation:
a. To find the percentage of the weight limit that 33 pounds is, we can use the following formula:
(Weight / Weight Limit) x 100 = Percentage
So, for 33 pounds:
(33 / 60) x 100 = 55%
b. To find the percentage of the weight limit that 114 pounds is:
(114 / 60) x 100 = 190%
c. To find what weight is 95% of the limit, we can use the following formula:
Weight Limit x (Percentage / 100) = Weight
So, for 95%:
60 x (95 / 100) = 57 pounds
Therefore, 95% of the weight limit is 57 pounds.
ch 7- a student investigating study habits asks a simple random sample of 16 students at her (large) high school how many minutes they spent on their english homework the previous night. suppose the actual parameter values for this variable are m=45 minutes and sd=25 minutes. which of the following best describes what we know about the sampling distribution of means for the student's sample?
The standard deviation of the sampling distribution of the mean is d)3.75; the distribution is approximately Normal.
According to the Central Limit Theorem, when the sample size is large enough (typically n > 30), the sampling distribution of the mean will be approximately normal, regardless of the shape of the population distribution.
In this case, the sample size is 16, which is larger than 30, so we can assume that the sampling distribution of the mean is approximately normal.
The standard deviation of the sampling distribution of the mean (also known as the standard error) is given by:
σm = σ/ √n
where σ is the population standard deviation and n is the sample size.
Plugging in the given values:
σm = 15/ √16 = 15/4 = 3.75
So the standard deviation of the sampling distribution of the mean for the student's sample is 3.75 minutes.
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The units of an item available for sale during the year were as follows:
Jan. 1
Inventory
9 units at $39
$351
Aug. 13
Purchase
9 units at $41
369
Nov. 30
6 units at $42
252
Available for sale
24 units
There are 7 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the inventory cost usin
first-in, first-out (FIFO) method; (b) last-in, first-out (LIFO) method; and (c) weighted average cost method (round per-unit cost to two decimal
your final answer to the nearest whole dollar).
Purchase
a. First-in, first-out (FIFO)
b.
Last-in, first-out (LIFO)
c. Weighted average cost
Feedback
M
$972
41 X
Check My Work
a. When the FIFO method is used, costs are included in cost of goods sold in the order in which they were purchased.
b. When the LIFO method is used, the cost of the units sold is the cost of the most recent purchases.
c. The average cost method is sometimes called the weighted average method. The average cost method uses the average unit cost for dete
cost of goods sold and the ending inventory.
Answer: a. First-in, first-out (FIFO) method:
Under FIFO, the first units purchased are assumed to be the first units sold.
9 units were sold at $39 each for a total cost of $351
9 units were sold at $41 each for a total cost of $369
6 units were sold at $42 each for a total cost of $252
So the total cost of goods sold is $351 + $369 + $252 = $972
The 7 units remaining in inventory at the end of the year were purchased at $41 each, so their cost is 7*41 = $287
b. Last-in, first-out (LIFO) method:
Under LIFO, the most recent units purchased are assumed to be the first units sold.
6 units were sold at $42 each for a total cost of $252
9 units were sold at $41 each for a total cost of $369
9 units were sold at $39 each for a total cost of $351
So the total cost of goods sold is $252 + $369 + $351 = $972
The 7 units remaining in inventory at the end of the year were purchased at $39 each, so their cost is 7*39 = $273
c. Weighted average cost method:
Under the weighted average cost method, the average cost of all the units is used to determine the cost of goods sold and ending inventory.
The total cost of the units available for sale is $351 + $369 + $252 = $972 and the total number of units available for sale is 24. So, the average cost per unit is $972 / 24 = $40.50
The cost of goods sold is $40.50 * 24 = $970.
The cost of the units remaining in inventory at the end of the year is $40.50 * 7 = $283.50
Note: The final answers were rounded to the nearest whole dollar.
Step-by-step explanation:
Sandra saves 10% of her salary for retirement. This year her salary was $1,000 more than in the previous year, and she saved $5,000. What was her salary in the previous year?
Complete the equation. 0.10(x + ) = 5,000
Sandra's salary in the previous year was .
Sandra's last year salary was $24500
What is equation?An equation is a mathematical statement that shows that two mathematical expressions are equal.
Given that, Sandra saves 10% of her salary for retirement. This year her salary was $1,000 more than in the previous year, and she saved $5,000.
Let her previous salary be x, then according to question,
10% of x + 10% of 1000+x = 5000
x / 10 + (1000+x) / 10 = 5000
x + 1000 + x = 50000
2x = 49000
x = 24500
Hence, Sandra's last year salary was $24500
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PLEASE HELP ITS MY BDAY TOMORROW
At the end of each year, Theo gets his
house valued.
After one year, the starting value had
increased by 9%.
After two years, this new value had
decreased by 4% and the house was
valued at £758,640.
What was the starting value of the house?
Give your answer in pounds (£).
Therefore, the starting value of the house was £724,492.37 (rounded to two decimal places).
What is fraction?A fraction is a mathematical expression that represents a part of a whole. It is expressed as two numbers separated by a line or a slash, with the number on top called the numerator and the number on the bottom called the denominator. The numerator represents the number of parts being considered, while the denominator represents the total number of parts in the whole. Fractions can be used to represent quantities such as lengths, distances, time, weight, and many other things in the real world. They are an important concept in mathematics and are used in a wide range of applications, from basic arithmetic to advanced calculus and beyond.
Here,
Let's denote the starting value of the house by x.
After the first year, the value increased by 9%, so the value became 1.09x.
After the second year, the new value decreased by 4%, so the value became 0.96(1.09x) = 1.0464x.
We know that this final value is £758,640, so we can set up an equation and solve for x:
1.0464x = 758640
x = 758640 / 1.0464
x ≈ 724492.37
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In the triangles below, m
Triangle one has 3 sides
B, L, and T
Labeled 4 from B to L
5 from L to T
And 6 from B to T
Triangle two also has 3 sides
H, A, and M
Only A to M is labeled 10
The other sides don’t have numbers labeled.
The question is:
What is the length of HA?
A. 6 and 2/3
B. 8
C. 2 and 2/5
D. 15
Answer:
8
Step-by-step explanation:
so first you need to add by the fraction of 10 the the BASS of eletro power of 10¬ then you add the μ3 that is how you get 8
What is the distance between the points (21, 12) and (6, 12) in the coordinate plane?
A.
27 units
B.
15 units
C.
9 units
D.
7.5 units
Answer: B: 15
Step-by-step explanation: I hope this helps!
the time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. answer the following questions.
The probability of a student completing the final examination in less than 65 minutes is 13.45%.
The time it takes to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. This can be expressed mathematically as X~N(77, 12).
The probability of a student completing the final examination in less than 65 minutes can be calculated by using the Z-score formula:
Z = (x - μ) / σ
Where x = 65 minutes, μ = 77 minutes, and σ = 12 minutes.
Plugging these values into the formula, we get:
Z = (65 - 77) / 12 = -1.17
Using a Z-score table, we can find the probability of a student completing the final examination in less than 65 minutes, which is equal to 0.1345, or 13.45%. Therefore, the probability of a student completing the final examination in less than 65 minutes is 13.45%.
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Complete question :What is the probability of a student taking 90 minutes or less to finish the exam?
For the expression, write an equivalent expression that uses only addition.
The expressions using only addition are (a) 4x + (-7y) + (-5z) + 6 and (a) -3x + (-8y) + (-4) + (-8/7z)
How to determine the equivalent expressionExpression 1
From the question, we have the following expression that can be used in our computation:
4x - 7y - 5z + 6
When represented using only addition, we have
4x + (-7y) + (-5z) + 6
Expression 2
From the question, we have the following expression that can be used in our computation:
-3x - 8y - 4 - 8/7z
When represented using only addition, we have
-3x + (-8y) + (-4) + (-8/7z)
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PLS HELP ALG 1 DUE TMR
The parabola opens up, Axis of symmetry = 5, The quadratic have two solutions, x = 2 and x = 8 and And the vertex is a minimum.
What is symmetry?Any geometric shape is divided into two equal halves by the symmetry. For a quadratic equation in standard form, y = ax2 + bx + c, the axis of symmetry formula is given as x = -b/2a. The equation is x = h if the parabola is in vertex form, which is y = a(x-h)2 + k.
Axis of symmetry = -b / 2a
x = 10 / 2(1)
x = 5
As axis of symmetry is x = 5,
the parabola opens up
Given the equation is y = x² - 10x + 16
factorizing the equation,
x² - 10x + 16
x² - 8x - 2x + 16
x(x - 8) -2(x - 8)
(x - 2)(x - 8)
x = 2 or x = 8
There are 2 solutions of parabola.
From the given equation,
x² - 10x + 16
Using completing squares method,
⇒ x² - 10x + 16 + 25 - 25
⇒ (x - 5)² - 9
The value of vertex (h, k) = (5,-9)
The vertex is minimum.
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they police use a speed gun to monitor one part of a highway. During one hour, 6 out of 25 Cars we're traveling above the speed limit. what percent of the Cars were traveling above the speed limit?
explain how you solved it:
By taking a quotient we will see that the percent is 24%.
What percent of the Cars were traveling above the speed limit?The percent will be given by the quotient between the number of cars that have a speed above the speed limit, and the total number of cars (and we multiply that by 100%)
There are 25 cars in total, and 6 of these have a speed above the speed limit, then the percent is:
p = (6/25)*100% = 24%
So 24 percent of the cars are travelling above the speed limit.
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different between foreign policy during Tewodros,Menelik,and Yohannes and emperor Haileselassie
During the first eighteen years of his rule, he spent most of his time defending his nation against attacks from Egypt, Italy, and the Mahdists.
What was Ethiopia's foreign policy under Emperor Yohannes? During the first eighteen years of his rule, he spent most of his time defending his nation against attacks from Egypt, Italy, and the Mahdists.Through the use of compromise and power-sharing, Yohannes was largely successful in pacifying the nation and growing his kingdom.In order to strengthen his kingdom and forward his reforms, he devised a daring foreign strategy in 1861.Queen Victoria of Great Britain was offered an alliance by Tewodros in 1862 to eradicate Islam.When the British rejected the plan, Tewodros imprisoned the British envoy and other Europeans. Tewodros waited for an answer but never received one.The Derg dictatorship was able to act in the same way because Haile Selassie's foreign policy for Ethiopia was essentially intended to keep him in power.To learn more about foreign policy refer
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Match the polynomial to its correct name g(x)=5x^3
Answer:
Step-by-step explanation:
46
Solve the equation for all real values of x.
3 tan²x =√3 tanx
The trigonometric equation has the following roots: x₁ = ± i · π, x₂ = π / 6 ± i · π, where i are integers. (Correct choice: D)
How to solve a trigonometric equation
Trigonometric equations are equations that involve trigonometric functions. Trigonometric functions are periodic trascendent functions. In this problem we must determine the roots of a trigonometric equations by means of algebra properties and trigonometric formulas:
3 · tan² x = √3 · tan x
3 · tan² x - √3 · tan x = 0
tan x · (3 · tan x - √3) = 0
The roots of the equation are tan x = 0 or tan x = √3 / 3, whose angles are: x₁ = ± i · π, x₂ = π / 6 ± i · π, where i are integers.
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anna buys bananas grapes and apples she buys twice the amount of bananas as grapes she buys 2 more pounds of apples than grapes all together anna bought 14 pounds of fruit how many pounds of each fruit did she buy
The amounts of each fruit that Anna bought is given as follows:
Bananas: 6 pounds.Grapes: 3 pounds.Apples: 5 pounds.How to obtain the amounts?The variables for the system of equations are given as follows:
Variable x: amount of bananas.Variable y: amount of grapes.Variable z: amount of apples.She buys a total of 14 pounds, hence:
x + y + z = 14.
She buys twice the amount of bananas as grapes, hence:
x = 2y.
She buys 2 more pounds of apples than grapes, hence:
z = 2 + y.
Then the amount of grapes can be obtained as follows:
x + y + z = 14.
2y + y + 2 + y = 14
4y = 12
y = 3 pounds.
Then the remaining amounts are given as follows:
x = 2y = 6 pounds.z = y + 2 = 5 pounds.More can be learned about a system of equations at https://brainly.com/question/13729904
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Swimming Pool On a certain hot summer's day, 445 people used the public swimming pool. The daily prices are $1.75
for children and $2.50 for adults. The receipts for admission totaled $964.75. How many children and how many adults
swam at the public pool that day?
250 adults and 195 children swam at the public pool on that day.
What is the system of linear equations?
A system of linear equations is a set of two or more equations that contain two or more variables. The goal is to find the values of the variables that will satisfy all of the equations in the system.
This is a system of equations problem. We can start by using two variables, x for the number of children and y for the number of adults, and then set up two equations based on the information given.
The first equation is for the total number of people: x + y = 445
The second equation is for the total amount of money collected: 1.75x + 2.5y = 964.75
We can now use the first equation to solve for one of the variables in terms of the other, and then substitute that expression into the second equation.
x + y = 445
x = 445 - y
Now we substitute x = 445 - y into the second equation
1.75(445 - y) + 2.5y = 964.75
after solving this equation we get
y = 250
x = 195
Hence, 250 adults and 195 children swam at the public pool on that day.
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