Answer:
Formula of the area of triangle = 1/2 × b × h (where 'b' is the base and 'h' is the height)
1 hectare = $36
$486 = 13.5 hectares
13.5 hectares = 1/2 × b × h
To get b × h, you use the reverse of the formula. Hence:
13.5 = 1/2 × b × h
13.5 ÷ 1/2 = b × h
= 27
27 is b × h.
The question states that the base is three times the height. Hence:
b = 3u
h = 1u
b × h = 27
= 3u × 1u
Thus, we need to find one value which is three times the other, in order to get a product of 27.
Factors of 27:
1 × 27
3 × 9
9 is three times of 3. Thus, the base is 9, while the height is 3.
Solve the following initial value problem for the function \(y(x)\).
\(
y^{\prime}=2 x y^2 \quad ; \quad y(1)=1 / 2
\)
The solution of the initial value problem y' = 2xy² ; y(1) = 1/2 is y(x) = -1/(x² - 3)
What is an initial value problem?An initial value problem is a differential equation that contains the initial values of the variables of the differential equation.
How to solve the initial value problem?Given the initial value problem
y' = 2xy² ; y(1) = 1/2
So, we solve the differential equation as follows
y' = 2xy²
dy/dx = 2xy²
Separing the variables, we have
dy/y² = 2xdx
Integrating both sides of the equation, we have
∫dy/y² = ∫2xdx
∫dy/y² = 2∫xdx
We know that ∫xⁿ = xⁿ⁺¹/(n + 1)
So, integrating the expressions, we have
y⁻²⁺¹/(-2 + 1) = 2x¹⁺¹/(1 + 1)
y⁻¹/(-1) = 2x²/2 + c
-y⁻¹ = x² + c
Given that y(1) = 1/2, substituting these into the equaqtion, we have
-y⁻¹ = x² + c
-(1/2)⁻¹ = 1² + c
-2 = 1 = c
c = -2 - 1
c = -3
So, -y⁻¹ = x² + c
-y⁻¹ = x² - 3
Dividing through by - 1, we have
y⁻¹ = -(x² - 3)
Taking the inverse of both sides, we have
y(x) = -1/(x² - 3)
So, y(x) = -1/(x² - 3)
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Does the table below represents a linear function why or why not
Answer:
No, it's not linear function.
Step-by-step explanation:
The x value repeatedly adds 3.
So far its a linear function.
If you look at the y value, it does NOT have a pattern, therefore that means it is NOT a linear function.
2. pvalue
3.critical value
4.test value
5.make a desision
Noise Levels in Hospitals In a hospital study, it was found that the standard deviation of the sound levels from 30 areas designated as "casualty doors" was 6.4 dBA and the standard deviation of 28 areas designated as operating theaters was 4.1 dBA. At a 0.10, can you substantiate the claim that there is a difference in the standard deviations? Use a, for the standard deviation of the sound levels from areas designated as "casualty doors." Part 1 of 5 (a) State the hypotheses and identify the claim. H_0: sigma_1^ = sigma_2^ _____
H_1: sigma_1^ ≠ sigma_2^ _____
This hypothesis test is a___test.
The hypotheses for the test are H₀: σ₁² = σ₂² and H₁: σ₁² ≠ σ₂². This is a two-tailed test to assess if there is a difference in the standard deviations of sound levels between the areas designated as "casualty doors" and operating theaters. The claim being investigated is whether or not there is a difference in the standard deviations.
The hypotheses for the test are:
H₀: σ₁² = σ₂² (There is no difference in the standard deviations of the sound levels between the areas designated as "casualty doors" and operating theaters.)
H₁: σ₁² ≠ σ₂² (There is a difference in the standard deviations of the sound levels between the areas designated as "casualty doors" and operating theaters.)
This hypothesis test is a two-tailed test because the alternative hypothesis is not specifying a direction of difference.
To substantiate the claim that there is a difference in the standard deviations, we will conduct a two-sample F-test at a significance level of 0.10, comparing the variances of the two groups.
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The total charge for a yearly internet DVD rental membership is $231. A registration fee of $15 is paid up front , and the rest is paid monthly. Write an equation to determine how much new members pay each month, m.
How much do new members pay each month,m.
Answer:
89 cents.
Step-by-step explanation:
hope this helps
The midpoint of AB is M(-5, 1). If the coordinates of A are (-4,-5), what are
the coordinates of B?
Answer:
-6, 7
Step-by-step explanation:
Answer: B(-6,7)
Step-by-step explanation:
M(-5, 1) A(-4,-5) B(x,y)=?
\(\displaystyle\\M_x=\frac{x_A+x_B}{2} \\\\-5=\frac{-4+x_B}{2}\\\\\)
Multiply both parts of the equation by 2:
\(-5(2)=-4+x_B\\\\-10=-4+x_B\\\\-10+4=-4+x_B+4\\\\-6=x_B\\\\Thus,\ x_B=-6\)
\(\displaystyle\\\\\\1=\frac{-5+y_B}{2} \\\\\)
Multiply both parts of the equation by 2:
\(1(2)=-5+y_B\\\\2=-5+y_B\\\\2+5=-5+y_B+5\\\\7=y_B\\\\Thus,\ y_B=7\)
What is the Measure of arc XY?
Answer:
Arc XY = 180- 43
= 137º
answer is C
Step-by-step explanation:
»Sasha is a journalist for an online magazine. She wants to know what topic readers are interested
in for the next publication.
Sasha puts a survey on the magazine's website and considers the first 25 responses.
Are conclusions drawn from this sample likely to be true for all readers of the magazine?
No, because the members of the sample are not part of the population of all
magazine readers.
No, because the sample would probably include only readers with strong feelings
about what they want to read about.
Yes, because the sample of the first 25 responses is a random sample.
Yes, because the readers in the sample choose to take the survey.
The correct answer is "No, because the sample members are not all magazine readers in the general population."
Define the term random sample?A sample chosen at random from a population is known as a random sample. This makes sure that everyone in the population has the same chance of getting into the sample.
The correct answer is "No, because the sample members are not all magazine readers in the general population."
This is because the sample of 25 respondents is likely to be too small and not representative of the entire population of readers. The sample may not accurately represent the opinions and interests of all readers, and there could be other factors that influence readership preferences that are not captured in the sample. Therefore, any conclusions drawn from this sample may not be true for all readers of the magazine. In order to draw more accurate conclusions about the entire population of readers, a larger and more representative sample would be needed.
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Answer: No, because the sample would probably include only readers with strong feelings about what they want to read about.
Step-by-step explanation:
The correct answer is "No, because the sample members are not all magazine readers in the general population."
Define the term random sample?A sample chosen at random from a population is known as a random sample. This makes sure that everyone in the population has the same chance of getting into the sample.
The correct answer is "No, because the sample members are not all magazine readers in the general population."
This is because the sample of 25 respondents is likely to be too small and not representative of the entire population of readers. The sample may not accurately represent the opinions and interests of all readers, and there could be other factors that influence readership preferences that are not captured in the sample. Therefore, any conclusions drawn from this sample may not be true for all readers of the magazine. In order to draw more accurate conclusions about the entire population of readers, a larger and more representative sample would be needed.
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Answer: No, because the sample would probably include only readers with strong feelings about what they want to read about.
Step-by-step explanation:
I need help with geometry
I know its not the first one
Answer: ASA, C
Step-by-step explanation:
I think it's ASA cuz since the lines indicate they are parallel, then you can find that the two interior angles are also congruent. Since two angles are the same with the side inbetween being the same, it's probably asa.
What type of graph is shown, and what is the growth factor?
linear function; growth factor of 2
linear function; growth factor of 4
exponential function; growth factor of 2
exponential function; growth factor of 4
The graph is a linear function with a growth factor of 4
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
The graph has the shape of a straight line, so it is linear.
The graph starts at point (0, 0). It passes through point (1, 4).
slope = 4/1 = 4
The slope is 4. Growth factor is the same as slope for a linear function.
Hence, the graph is a linear function with a growth factor of 4
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El volumen de un prisma de base rectangular es 24 m3. Si el largo de la base es 2,5 m y su ancho es 4 m, ¿cuál es la altura del prisma?
Answer:
La altura del prisma es 2,4 m.
Step-by-step explanation:
Para calcular el volumen de un prisma rectangular, es necesario multiplicar sus tres dimensiones, esto es, longitud*ancho*altura. El volumen se expresa en unidades cúbicas.
Entonces:
volumen= longitud*ancho*altura
En este caso, los datos conocidos son:
volumen= 24 m³longitud= largo de la base= 2,5 mancho= 4 maltura= ?Reemplazando:
24 m³= 2,5 m* 4 m* altura
Resolviendo:
\(altura=\frac{24 m^{3} }{2,5 m*4m}\)
\(altura=\frac{24 m^{3} }{10 m^{2} }\)
altura= 2,4 m
La altura del prisma es 2,4 m.
Carlos makes a fruit drink by mixing orange juice and grapefruit juice. The ratio of orange juice to grapefruit juice is 3: 1. He makes 10 litres of the fruit drink.
Work out how much orange juice he uses.
Answer:
7.5 litres
Step-by-step explanation:
Let the amount of orange juice ve 3x litres and amount of grapefruit juice be 1x. (As they are in ratio of 3:1.)
Now, according to the question,
He makes 10 litres of the fruit drink.So,
⇒ Amount of orange juice + Amount of grape fruit juice = 10 litres
⇒ 3x + x = 10
⇒ 4x = 10
⇒ x = 10 ÷ 4
⇒ x = 2.5
Now,
⇒ Amount of orange juice he used= 3x litres
⇒ Amount of orange juice he used= 3(2.5) litres
⇒ Amount of orange juice he used= 7.5 litres
∴ He used 7.5 litres of orange juice.
Need some help? Could you please explain briefly to understand better?
Given the functions:
\(\begin{gathered} f(x)=\sqrt[]{5x+25}-1 \\ g(x)=x^2-2x-3 \end{gathered}\)Solve the equations means finding the values of x provided that f(x) = g(x)
so,
\(x^2-2x-3=\sqrt[]{5x+25}-1\)Make the square root alone on the right-side
\(\begin{gathered} x^2-2x-3+1=\sqrt[]{5x+25} \\ x^2-2x-2=\sqrt[]{5x+25} \end{gathered}\)Square both sides to eliminate the square root:
\((x^2-2x-2)^2=5x+25\)Simplifying the equation:
\(\begin{gathered} x^2(x^2-2x-2)-2x(x^2-2x-2)-2(x^2-2x-2)=5x+25 \\ x^4-2x^3-2x^2-2x^3+4x^2+4x-2x^2+4x+4=5x+25 \\ x^4-4x^3+3x-21=0 \end{gathered}\)Solve the last equation to find the values of x
We can use the calculator to find the values of x
So,
\(x=-1.66,or,x=4.12\)Rounding to the nearest tenth
So, the answer will be x = {-1.7, 4.1 }
A medical clinic is randomly selecting three staff members. there are 7 nurses, 3 doctors, and 4 office. What is the probability that three nurses are selected?
rAnswer:
50%
Step-by-step explanation:
7 nurses
3 doctors
4 offices
14 in total
7/14 or 50% is the probability
The probability that three nurses are selected is 7/14.
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
From the information, the total outcome if nurses are randomly selected is expressed as:
Total outcome = 7 + 4 + 3 = 14 outcomes
In order to get the probability that three nurses are selected, the expected outcome is 7;
P = 7/14
Hence the probability that three nurses are selected is 7/14.
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please answer this!!
Answer:
You can not solve it because Side P does not exist
Step-by-step explanation:
1. Solve, 2x-4=10.
Pls solve now
Answer:
x=7
Step-by-step explanation:
Answer:
x=7
Step-by-step explanation:
2x-4=10
+10 +10
2x 14
2x/2 2/14
x = 7
use the graphs of f and g to describe the transformation from the graph of f the the graph of f to the graph of g.
f(x) = -3x + 4 ; g(x) = f(x) + 1
The value of the function f(x) = -3x+4 is -3x+5
What is function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
Given a function, f(x) = -3x+4
g(x) is described as f(x) +1
g(x) = -3x+4+1
g(x) = -3x+5
The graph of f(x) will move 1 unit farther when transformed into g(x).
Hence, The value of the function f(x) = -3x+4 is -3x+5
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A trucker buys crates of apples and pears to sell at a Farmer's Market. The apples cost $6 per crate and the pears cost $5.50 per crate. Each crate weights 25 pounds. If the truck can carry 5000 pounds and the trucker has $1180 to spend, how many crates of each kind of fruit can he buy? Write your answer as an ordered pair (x,y).
Answer:
He can buy 160 crates of apples and 40 crates of pears. (160, 40).
Step-by-step explanation:
From the information given, you can write the following equations:
25x+25y=5000 (1)
6x+5.50y=1180 (2), where:
x is the number of crates of apples
y is the number of crates of pears
First, you can solve for x in (1):
25x=5000-25y
x=(5000/25)-(25y/25)
x=200-y (3)
Then, you can replace (3) in (2) and solve for y:
6(200-y)+5.50y=1180
1200-6y+5.50y=1180
1200-1180=6y-5.50y
20=0.5y
y=20/0.5
y=40
Finally, you can replace the value of y in (3) to find the value of x:
x=200-y
x=200-40
x=160
According to this, the answer is that he can buy 160 crates of apples and 40 crates of pears. (160, 40).
(1.5x10^13)^2 in standard form
The standard form of the number \((1.5*10^(13))^2\) is 2.25×\(10^(26)\) .
What is standard form of a number ?
An equation, an expression, or a set of integers can all be written in standard form using the standard form approach. It is possible to express a number in a way that adheres to certain standards by writing it in its standard form. Standard form refers to any number between 1.0 and 10.0 that may be expressed as a decimal number and multiplied by a power of 10. The term "standard form" in this context refers to the act of condensing a particularly big expanded form of a number.
Here given is ,
=> \((1.5*10^(13))^2\)
=> \(1.5^2\) × \(10^(13)^2\)
=> 2.25×\(10^(26)\)
Therefore standard form of the number is 2.25×\(10^(26)\).
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If y varies inversely with x
and y is 10 when x is 5,
then what is y when xis 2?
Answer:
4
Step-by-step explanation:
First let’s write out the info:
X Y
5 10
2 ?
Five is to ten as two is to what? Well let’s find out.
Five times TWO is ten, so logically, we multiply two times two.
2x2=4
The answer is 4
I hope this helps! :D
pls give thx and brainliest if I’m right ;)
Which of the following statements is true for ALL quadratic functions?
a)They all have a minimum
b)The domain is (-∞, ∞)
c)They all have a maximum
d)The range is (-∞, ∞)
Select the correct answer from each drop-down menu.Consider this equation.First Step is to 1. take the cube root of both sides. 2. Add x to both sides. 3. cube both sidesSecond Step is 1. Add the cube root of X to both sides. 2. Cube both sides. 3. Add the cube of x to both sidesSolving this equation for x initially yields 1. Two possible Solutions. 2. One possible solution. 3. Three possible solutionsChecking the Solutions show that. 1. 0 and 2 are valid solutions. 2. only 0 is valid. 3. -2,0, and 2 are valid solutions. 4. None are valid
First step is to add x to both sides.
Second step is cube both sides.
Solving this equation for x initially yields three possible solutions.
\(\begin{gathered} (4x)^{\frac{1}{3}}-x=0 \\ (4x)^{\frac{1}{3}}=x \\ 4x=x^3 \\ x^3-4x=0 \\ x(x^2-4)=0 \\ then_{} \\ x=0 \\ or \\ x^2-4=0 \\ x^2=4 \\ x=\pm2 \end{gathered}\)Checking the solutions show that -2, 0 and 2 are valid solutions.
Suppose the scores of students on a Statistics course are Normally distributed with a mean of 529 and a standard deviation of 76. What percentage of the students scored between 529 and 681 on the exam? (Give your answer to 3 significant figures.) percent.
The percentage of students who scored between 529 and 681 on the exam is 47.7%.
The given information is;μ = 529σ = 76.Therefore, the students' scores in the Statistics course are Normally distributed with a mean of 529 and a standard deviation of 76.
The required percentage of students who scored between 529 and 681 on the exam is to be found out.Now, we need to find the Z-score for the upper bound and the lower bound of the interval.
The Z-score for the lower bound is;(529 - 529) / 76 = 0The Z-score for the upper bound is;(681 - 529) / 76 = 2The main answer:
The formula to find the percentage of values between two points for a normal distribution is;P (a < x < b) = Φ(b) − Φ.
Here, Φ(b) represents the area under the curve to the left of the upper bound, and Φ(a) represents the area under the curve to the left of the lower bound.
Therefore, we can write:P (529 < x < 681) = Φ(2) − Φ(0) = 0.9772 − 0.5 = 0.4772.The percentage of students who scored between 529 and 681 on the exam is 47.7%.
The percentage of students who scored between 529 and 681 on the exam is 47.7%
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Sarah paid $16.50 for 3 yards of fabric. how much did Sarah pay for each yard of fabric
Answer5.5:
Step-by-step explanation:
Divided 16.50 by 3
Answer:
5.50
Step-by-step explanation:
16.50 divided by 3 5.50
determine whether the series is absolutely convergent, conditionally convergent, or divergent. [infinity] 7 − cos(3n) n2/3 − 2 n = 1
Based on the behavior of the terms and the comparison with the harmonic series, we conclude that the given series ∑ (7 - cos(3n))/(n^(2/3) - 2) is divergent.
First, let's consider the behavior of the individual terms in the series. The numerator, 7 - cos(3n), oscillates between values of -6 and 8 as n increases. The denominator, n^(2/3) - 2, grows without bound as n approaches infinity.
Since the numerator oscillates and the denominator grows, it suggests that the series does not converge absolutely. To confirm this, we can apply the Limit Comparison Test or the Comparison Test.
By comparing the series to a known convergent or divergent series, we can determine its convergence behavior. Let's compare it to the harmonic series, which is known to diverge. We can observe that as n approaches infinity, the denominator n^(2/3) - 2 grows at a faster rate than n, indicating that the series is also divergent.
Therefore, based on the behavior of the terms and the comparison with the harmonic series, we conclude that the given series ∑ (7 - cos(3n))/(n^(2/3) - 2) is divergent.
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f(x)=3x 4
−9x 3
+x 2
−x+1 Choose the answer below that lists the potential rational zeros. A. −1,1,− 3
1
, 3
1
,− 9
1
, 9
1
B. −1,1,− 3
1
, 3
1
C. −1,1,−3,3,−9,9,− 3
1
, 3
1
,− 9
1
, 9
1
D. −1,1,−3,3
The potential rational zeros for the polynomial function \(F(x) = 3x^4 - 9x^3 + x^2 - x + 1\) are: A. -1, 1, -3/1, 3/1, -9/1, 9/1.
To find the potential rational zeros of a polynomial function, we can use the Rational Root Theorem. According to the theorem, if a rational number p/q is a zero of a polynomial, then p is a factor of the constant term and q is a factor of the leading coefficient.
In the given polynomial function \(F(x) = 3x^4 - 9x^3 + x^2 - x + 1,\) the leading coefficient is 3, and the constant term is 1. Therefore, the potential rational zeros can be obtained by taking the factors of 1 (the constant term) divided by the factors of 3 (the leading coefficient).
The factors of 1 are ±1, and the factors of 3 are ±1, ±3, and ±9. Combining these factors, we get the potential rational zeros as: -1, 1, -3/1, 3/1, -9/1, and 9/1.
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What function is represented below?
Answer:
the answer is a
Step-by-step explanation:
A function assigns values. The function that represents the graph is (1/4)^(x+2).
What is a Function?A function assigns the value of each element of one set to the other specific element of another set.
The function of the graph that will represent the graph given below is
\(y = (\dfrac{1}{4})^{(x+2)}\)
Thus, the function that represents the graph is (1/4)^(x+2).
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HELP IMMEDIATELY PLEASE
use the couple of lines for #4
Answer:
#2 Alternate interior angles: 4 & 5 and 3 and 6
#4 :
m∠6 = 55°
m∠3 = 55°
m∠1 = 125°
Reasons: See below
Step-by-step explanation:
Angles 6 and 8 are supplementary angles since they are on the same straight line intersected by another straight line.
So m∠6 + m∠8 = 180
m∠6 + 125 = 180
m∠6 = 180-125= 55°
Angles 3 and 6 are alternate interior angles and equal to each other
m∠3 = m∠6 = 55°
Angles 1 and 3 are supplementary angles whose sum of measures should add up to 180°
m∠1 + m∠3 = 180
m∠1 + 55 = 180
m∠1 = 180-55 = 125°
Answer all pls/ anyone u cann
Using relations in a right triangle, we have that:
1 - a) x = 54.28º.
1 - b) y = 57.794º.
1 - c) z = 31.056º.
2) The angle is of 62.8º.
3) The angle is of x = 53.017º.
4) The angle x is of 20.364º, which is greater than 17º, hence she can use the smooth tiles.
5) The angle y is of 38.37º, which is greater than 35º, hence he can go down the slide.
What are the relations in a right triangle?The relations in a right triangle are given as follows:
The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.For item 1a, we have that the sides, hence:
tan x = 8.9/6.4
x = arctan(8.9/6.4)
x = 54.28º.
For item 1b, we have the adjacent side and the hypotenuse, hence:
cos y = 9.7/18.2
y = cos^-1 (9.7/18.2)
y = 57.794º.
For item 1c, we have the opposite side and the hypotenuse, hence:
sin z = 6.5/12.6
z = sin^-1(6.5/12.6)
z = 31.056º.
For item 2, we have the sides, given at the graph at the end of the answer, hence:
tan x = 7.2/3.7
x = tan^-1(7.2/3.7)
x = 62.8º.
The angle is of 62.8º.
For item 3, first we find the hypotenuse of the bottom triangle, by the Pythagorean Theorem, as follows:
h² = 7.9² + 18.6²
h = sqrt(7.9² + 18.6²)
h = 20.21.
Then:
sin x = 20.21/25.3
x = sin^-1(20.21/25.3)
x = 53.017º.
For item 4, we have the adjacent side and the hypotenuse, hence:
cos(x) = 3/3.2
x = cos^-1 (3/3.2)
x = 20.364º.
The angle x is of 20.364º, which is greater than 17º, hence she can use the smooth tiles.
For item 5, we have the opposite side and the hypotenuse, hence:
sin y = 1.8/2.9
y = sin^-1 (1.8/2.9)
y = 38.37º.
The angle y is of 38.37º, which is greater than 35º, hence he can go down the slide.
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A weed control company claims that each application of its product eliminates 1/2 of weeds. The number of weeds is modeled by f(x)a0(1/2)*x, where A0 is the initial number of weeds and X is the number of applications. Select the graph of function if there are 50 weeds to eliminate.
Answer:
C
Step-by-step explanation:
7. Sharmaine travels from Singapore to Thailand.
She exchanges $600 into Thai baht when the exchange rate is $1 = 24 baht.
While in Thailand, she spends 12 538 baht.
On her return, she exchanges the remaining baht into dollars when the exchange rate is $1= 24.5 baht.
How many dollars does she receive?
Answer:
she receives 76 Dollars