There were 297 children and 185 adults who swam that day. Let x be the number of children and y be the number of adults who swam that day.
According to the problem, we know that:
x + y = 482 ---(1) (total number of people who swam)
1.5x + 2y = 815.5 ---(2) (total revenue generated)
To solve for x and y, we can use any method of solving a system of linear equations, such as substitution or elimination. Here's how to solve using the substitution method:
From equation (1), we can write:
x = 482 - y
Substituting this into equation (2), we get:
1.5(482 - y) + 2y = 815.5
Simplifying and solving for y, we find:
723 - 1.5y + 2y = 815.5
0.5y = 92.5
y = 185
Substituting this value of y back into equation (1), we find:
x + 185 = 482
x = 297
Therefore, there were 297 children and 185 adults who swam that day.
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What is the area of a right triangle with a height of seven and three fourths yards and a base of 20 yards?
If the height of seven and three fourths yards and a base of 20 yards, then the area of the right triangle is 77.5 square yards.
To calculate the area of a right triangle, we can use the formula:
Area = (base * height) / 2
where the base is one of the sides of the triangle, and the height is the perpendicular distance from that side to the opposite vertex.
In this case, the height of the right triangle is 7 and 3/4 yards, and the base is 20 yards. Plugging these values into the formula, we get:
Area = (20 * 7.75) / 2 = 155 / 2 = 77.5 square yards
In summary, to calculate the area of a right triangle, we can use the formula that relates the base and height to the area. In this case, we needed to use the given values of the height and base of the right triangle to compute the area in square yards.
The resulting area represents the amount of surface inside the triangle and is useful in many applications, such as geometry, physics, and engineering.
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The zeros of a quadratic function are x = 2 and x = -3. Write an
equation of the quadratic function.
The equation of the quadratic function is x² + x - 6
How to determine the quadratic functionNote that functions are equations, laws or expressions showing the relationship between two variables.
These variables are;
the dependent variableIndependent variableFrom the information given, we have that;
x = 2 and = -3 are the roots
Then,
(x -2)(x + 3)
expand the bracket, we get;
x² + 3x - 2x - 6
collect the like terms, we have;
x² + x - 6
Hence, the equation is x² + x - 6 = 0
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What shows the number of each type of greeting card at a gift shop had remaining at the end of the year the store created bags with 15 random cards in each bag how many complete bags of cards were they able to make
Using the unitary method, we find that the store created approximately 37 bags with 15 random cards in each bag.
This problem can be solved using the unitary method. It is given that the
number of Anniversary cards is 163,
number of Birthday cards is 258,
number of Get Well cards is 98
and the number of Thank you cards is 47
So, the total number of cards will be equal to the sum of all these cards, that is,
163+258+98+47
= 566 cards
To create bags of 15 random cards, we have to divide the total number of cards by 15 which gives,
566/15 = 37.734
Thereby, we can say that the store created approximately 37 bags with 15 random cards in each bag.
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Sophia is trying to pick out an outfit for the first day of school. She can choose from 2 pairs of pants, 2 t-shirts, and 4 pairs of shoes. How many different outfits does Sophia have to choose from?
The number of many different outfits Sophia has to choose from should be 16.
What is arithmetic?
Mathematical arithmetic is the study of the properties of the standard operations on numbers, such as addition, subtraction, multiplication, division, exponentiation, and root extraction.
Here, we have
Given: Sophia is trying to pick out an outfit for the first day of school. She can choose from 2 pairs of pants, 2 t-shirts, and 4 pairs of shoes.
She can choose from 2 pairs of pants, 2 t-shirts, and 4 pairs of shoes.
So here the number of distinct outfits should be like
= 2 × 4 × 2
= 16
Hence, the number of many different outfits Sophia has to choose from should be 16.
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Answer:16
Step-by-step explanation:Total outcomes
=
Total outcomes=
2‾
pants
×
2‾
t-shirts
×
4‾
shoes
pants
2
×
t-shirts
2
×
shoes
4
Fundamental counting principle
=
=
16
this test is too confusing for me please help me
Answer: 54
Step-by-step explanation:
question 13
help me asap
Answer:
AC = 16 cm
Step-by-step explanation:
given a tangent and a secant from an external point to the circle, then
the square of the measure of the tangent is equal to the product of the measures of the secant's external part and the entire secant, that is
AB × AC = AD²
4x = 8² = 64 ( divide both sides by 4 )
x = AC = 16 cm
Answer:
16 cm
Step-by-step explanation:
tan/sec Theorem
a² = b(b+c)
8² = 4(4+c)
64 = 16 + 4c
48 = 4c
12 = c
12 + 4 = 16 cm
7) The cost, C, in dollars for advertising on a social networking website is proportional to the number n
of clicks on the advertisement. Suppose a business is charged $108.50 for 310 clicks on its
advertisements. What is the slope of the line that represents the relationship between cost and clicks?
The slope of this line is 0.35, which represents the amount that the cost increases for each additional click.
What is equation of straight line ?
Equation of straight line can be as follows, y = mx +b
where m is a slope of line.
Given,
To find , The cost, C, in dollars for advertising on a social networking website is proportional to the number n] of clicks on the advertisement.
When a business is charged $108.50 for 310 clicks on its advertisements.
The cost, C, and number of clicks, n, are related by the equation
C = k * n, where k is the constant of proportionality.
From the given information, we know that C = $108.50 when n = 310. We can use this information to find the value of k:
$108.50 = k * 310
Solving for k:
k = $108.50 / 310
k = $0.35
So, the equation for the relationship between cost and clicks is:
C = $0.35 * n
Therefore, The slope of this line is 0.35, which represents the amount that the cost increases for each additional click.
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HELP DUE TONIGHT!!!
The volume of the sphere with a radius of 8.9 m is given as follows:
V = 2,951.5 m³.
How to obtain the volume of a sphere?The volume of a sphere of radius r is given by the equation presented as follows:
V = 4πr³/3.
The radius for this problem has the measure given as follows:
r = 8.9m.
Hence, considering that π is rounded to 3.14, the volume of the sphere is obtained as follows:
V = 4 x 3.14 x (8.9)³ x 1/3
V = 2,951.5 m³.
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Help ASAP please. !!!!
Sketch and graph please
The graph of the linear inequality y > -4 is given below.
What is linear inequality?Linear inequalities are expressions that use inequality symbols to compare two linear expressions. When a polynomial of degree 1 is contrasted with another algebraic expression of a degree less than or equal to 1, this comparison results in a linear inequality, which is an inequality including at least one linear algebraic expression. There are many different ways to represent different types of linear inequalities.
Given linear inequality is y > -4 which represents y region will be in the positive range or greater than -4.
The graph of this linear inequality is given below.
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a car rental company offers two plans for renting a car: plan a: 30 dollars per day and 12 cents per mile plan b: 50 dollars per day with free unlimited mileage for what range of miles will plan b save you money for a 1 day rental? to save money the mileage must be greater than miles per day.
Plan B will save you money for a 1-day rental if you drive more than 166.67 miles.
To determine the range of miles for which Plan B will save money over Plan A for a 1-day rental, we need to set up an equation that compares the total cost of each plan.
For Plan A, the cost is given by:
Cost(A) = 30 + 0.12x
where x is the number of miles driven.
For Plan B, the cost is given by:
Cost(B) = 50
since there is no additional charge for mileage.
To determine the range of miles for which Plan B is cheaper than Plan A, we need to find the value of x for which:
Cost(B) < Cost(A)
Substituting the expressions for the costs of each plan, we get:
50 < 30 + 0.12x
Simplifying this inequality, we get:
0.12x > 20
x > 20 / 0.12
x > 166.67
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help its a test and i really dont know the answer lol
Answer:
1. not a function
Since x=5 produces y=9 and y=0, it can't be a function
2. it is a function because there is one value of y for every value of x
3. A circle is not a function. because it doesn't pass the vertical line test
4. I think is d but not sure has been a while since I have done these questions so sorry if I am wrong :)
Step-by-step explanation:
have a nice day and good luck
in a pond the ratio of newts to toads was 3:4. 9 more toads then entered the pond and the ratio of newts became 3:5
Answer: As the ratio of newts and toads, 3:4
Step-by-step explanation:
Rectangle abcd has diagnal segment ac is 2x^2 +4x -6 and bd equal is x^2 -x +8 Find the lenght of ac
The length of AC is √(4x⁴+ 16x³ + 76x² - 16x + 64). In order to find the unit length of AC you have to get more measurement and solve for x in the equation.
We can use the fact that the diagonal of a rectangle is the square root of the sum of the squares of its sides. If the sides of the rectangle are "a" and "b", then the length of the diagonal is given by: √(a² + b²)
Let's call the length of AC "d". Then, from the information given, we have: d = √((2x² + 4x - 6)² + (x² - x + 8)²)
Expanding and simplifying the squares, we get:
d = √(4x⁴ + 16x³ + 12x² + 64x² - 16x + 64)
d = √(4x⁴+ 16x³ + 76x² - 16x + 64)
So, the length of AC is √(4x⁴ + 16x³ + 76x² - 16x + 64).
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In a particular hospital, 6 newborn babies were delivered yesterday. Here are their weights (in ounces).
94, 113, 93, 123, 93, 102
Send data to calculator
Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your answer to two decimal places.
The standard deviation of the population is approximately 11.8 ounces.
What is Statistics?Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.
The formula to find the standard deviation is given
σ = √( Σ(x - μ)² / N )
where μ is the mean.
μ = (94 + 113 + 93 + 123 + 93 + 102) / 6 = 100
Next, we can calculate the deviations of each value from the mean:
94 - 100 = -6
113 - 100 = 13
93 - 100 = -7
123 - 100 = 23
93 - 100 = -7
102 - 100 = 2
σ = √( -6)²+( 13)²+( -7)²+( 23)² +( -7)²+( 2)²/ 6 )
=√36+169+49+529+49+4/6
=√836/6=11.8
Hence, the standard deviation of the population is approximately 11.8 ounces.
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What does the point (7,84) represent in this situation?
The point (7,84) represents a precise location on a graph or coordinate plane.
A coordinate is a set of values that specifies the position or location of a point in a geometric space.
The point (7,84) represents a specific location on a graph or coordinate plane. The first number, 7, represents the point's position on the x-axis, which is a horizontal line that runs left to right. The second number, 84, represents the point's position on the y-axis, which is a vertical line that runs up and down. Together, the two numbers give us a precise location for the point.
In this situation, we don't have enough context to know what the point (7,84) represents. It could be the location of a city on a map, the amount of rainfall in inches on a specific day, or the price of a stock at a particular time. However, regardless of the situation, the point (7,84) is simply a specific location in a two-dimensional space that has been identified using coordinates.
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Complete Question:
What does the point (7,84) represent in the graph? And define the explanation for each value.
I NEED HELP ON THIS ASAP!!!!
In mathematics, a line is a set of points that extend indefinitely in two directions.
How to explain the linePoints on the line: These are points that lie exactly on the line. They are equidistant from the two endpoints of the line and are considered to be part of the line itself.
Points above the line: Points that are vertically above the line are referred to as points above the line. These points are located higher than the line and have a greater y-coordinate than any point on the line.
Points below the line: Points that are vertically below the line are referred to as points below the line. These points are located lower than the line and have a smaller y-coordinate than any point on the line.
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How many moles are in 5.3 x 1024 atoms of Kr?
Answer: 8.8 moles
Step-by-step explanation:
Fun Fun! Chemistry :)
So, 5.3 x [tex]10^{24}[/tex] atoms can be converted to moles by dividing by Avogadros number, (6.02 x 10^23). This is because Avogadros number of atoms form one mole.
So the answer is about 8.8 moles of Kr
The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the SD of the measurements is 20 mm. The histogram looks reasonably like a normal curve. Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct.
a. 10.6%
b. 89.4%
c. 39.4%
d. 78.8%
e. 68.27%
Using the normal curve to estimate the following percentages. The answer that is closes to being correct is 39.4%. So, the correct answer is C.
Since the distribution is approximately normal, we can use the empirical rule (also known as the 68-95-99.7 rule) to estimate the percentages.
a. 10.6%: This corresponds to the area under the curve that is more than 2 standard deviations below the mean. Using the rule, we know that about 2.5% of the area under the curve is more than 2 standard deviations below the mean. So 10.6% is too high. The answer is not a.
b. 89.4%: This corresponds to the area under the curve that is less than one standard deviation above the mean. Using the rule, we know that about 68% of the area under the curve is within one standard deviation of the mean. So 89.4% is too high. The answer is not b.
c. 39.4%: This corresponds to the area under the curve that is within one standard deviation of the mean. Using the rule, we know that about 68% of the area under the curve is within one standard deviation of the mean. So 39.4% is the closest to being correct. The answer is c.
d. 78.8%: This corresponds to the area under the curve that is less than two standard deviations above the mean. Using the rule, we know that about 95% of the area under the curve is within two standard deviations of the mean. So 78.8% is too high. The answer is not d.
e. 68.27%: This corresponds to the area under the curve that is within one standard deviation of the mean. This is the same as c. So e is not the correct answer.
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Phillips company bought 40 percent ownership in jones bag company on january 1, 20x1, at underlying book value. During the period of january 1, 20x1, through december 31, 20x3, the market value of phillips' investment in jones' stock increased by $2,000 each year. In 20x1, 20x2, and 20x3, jones bag reported the following: Year Net Income Dividends
20X1 $ 8,000 $15,000 20X2 12,000 10,000 20X3 20,000 10,000 The balance in Phillips Company’s investment account on December 31, 20X3, was $54,000.
Required:
In each of the following independent cases, determine the amount that Phillips paid for its investment in Jones Bag stock assuming that Phillips accounted for its investment by carrying the investment at fair value, or using the equity method.
Fair value $
Equity method $
The initial investment cost using the equity method would be:
Investment account balance + Phillips' share of retained earnings = Initial investment cost = $54,000 + $10,400 = $64,400
Fair Value Method:
The cumulative increase in fair value over the three years would be:
$2,000 + $2,000 + $2,000 = $6,000
Therefore, the initial investment cost would be:
$54,000 - $6,000 = $48,000
Equity Method:
By the equity method, Phillips would have recorded its share of Jones Bag's earnings each year, as well as its share of dividends received. Phillips' share of Jones Bag's earnings and dividends would be based on its 40% ownership interest.
Phillips' share of Jones Bag's earnings and dividends would be as following:
Year Earnings Dividends
20X1 $3,200 $6,000
20X2 $4,800 $4,000
20X3 $8,000 $4,000
$40,000 - $14,000 = $26,000
Phillips' share of retained earnings would be 40% of $26,000, or $10,400.
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the following contingency table shows the number of games won and lost at two locations where a local baseball team had played. wins losses daryl fields 7 3 lincoln park 8 2 what is the probability that the team lost a game if it played at lincoln park? answer choices are rounded to the hundredths place.
Probability 8 2/ 7 3=1.123 that the team lost a game if it played at lincoln park.
One of the areas of probability theory is the estimation of the chance of experiments occurring. Using a probability, we can calculate everything from the likelihood of getting heads or tails when flipping a coin to the likelihood of making a research error, for example. It is essential to appreciate the most basic definitions of this branch, such as the formula for computing probabilities in equiprobable sample spaces, the likelihood of two events joining together, the probability of the complementary event, etc., in order to properly understand it .Probability refers to potential. A random event's occurrence is the subject of this area of mathematics. Mathematics has incorporated probability to forecast the likelihood of various events.
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Jeremy has $8 saved and earns $20 each week tutoring his cousin. Mary has $26 saved and earns $18 eacbb he week babysitting her sister. After how many weeks will Jeremy and Mary have the same amount of money saved?
After 1 week of tutoring and babysitting, Jeremy and Mary will have saved the same amount of money ($28).
Let's start by defining some variables:
Let's call the number of weeks Jeremy tutors his cousin "j".Let's call the number of weeks Mary babysits her sister "m".Let's call the amount of money Jeremy has saved after j weeks "J".Let's call the amount of money Mary has saved after m weeks "M".We can then use this information to set up two equations that represent how much money each person has saved:
J = 20j + 8
M = 18m + 26
We want to know when J and M are equal, so we can set these equations equal to each other:
20j + 8 = 18m + 26
We can simplify this equation by subtracting 8 from both sides:
20j = 18m + 18
Then, we can divide both sides by 2 to simplify the equation further:
10j = 9m + 9
We want to find the smallest values of j and m that make this equation true. We can start by trying j = 1 and then incrementing j until we find a value that makes the right-hand side of the equation (9m + 9) divisible by 10. We can then solve for m and check that the left-hand side of the equation (10j) is equal to the same value.
If we try j = 1, we get:
10(1) = 9m + 9
Simplifying this equation gives us:
m = 1
So, if Jeremy tutors his cousin for 1 week and Mary babysits her sister for 1 week, they will both have the same amount of money saved. We can check this by plugging j = 1 and m = 1 into the original equations for J and M:
J = 20j + 8 = 20(1) + 8 = 28
M = 18m + 26 = 18(1) + 26 = 44
So, after 1 week of tutoring and babysitting, Jeremy and Mary will have saved the same amount of money ($28).
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given that x=a,y=b is the solution to the system of equations 2x+y=4, x-y=5 then what is the value of b to the power of a
Answer:
The answer is -8
Step-by-step explanation:
[tex]2x+y=4\\x-y=5\\\\[/tex]
after combining these into a singular equation, we get:
[tex]3x=9\\x=3[/tex]
substitute the value of [tex]x[/tex] into one of the equations:
[tex]x-y=5\\3-y=5\\y=-2[/tex]
now that we found the [tex]x[/tex] and [tex]y[/tex] value, we can substitute it into the term [tex]b^a[/tex] since we know that [tex]x=a[/tex] and [tex]y=b[/tex].
[tex]a^b\\a=x, b=y\\x=3, a=3\\y=-2, b=-2\\-2^3\\-8[/tex]
Y=2x+4 y=-x+1
Solve the system using substitution
The equivalent solution to the equation is (-1, -2)
Solving simultaneous equation using substitution methodGiven the simultaneous equation below:
Y=2x+4
y=-x+1
Since both equations are y expressions, we will equate then to have;
2x+ 4 = -x + 1
2x + x = 1 - 4
3x = -3
x = -1
For the value of y;
y = -x + 1
y = -1-1
y =-2
Hence the solution to the system of equation is (-1, -2)
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Shawna joined the bowling league at Bronze Lanes, a bowling alley. She scores a strike 75% of the time. For a perfect game, she needs to bowl a strike 12 times in a row. How likely is it that Shawna will bowl a perfect game at her next game?
Shawna simulates the situation by using a computer to randomly generate 12 numbers from 1 to 4. Each time 1, 2, or 3 appears, it represents a strike
The probability of Shawna bowling a perfect game is 7.23%.
Assuming that Shawna's chance of getting a strike is independent on each roll (which may not be entirely accurate in real life), the probability of her getting a strike on any given roll is 0.75.
To calculate the probability of Shawna bowling a perfect game (i.e., getting a strike on all 12 rolls), we can use the multiplication rule of probability, which states that the probability of two independent events occurring together is the product of their individual probabilities.
So, the probability of Shawna getting a strike on the first roll is 0.75. The probability of her getting a strike on the second roll, assuming she got a strike on the first roll, is also 0.75. Similarly, the probability of her getting a strike on the third roll, assuming she got strikes on the first two rolls, is also 0.75. We can continue this pattern for all 12 rolls.
Therefore, the probability of Shawna bowling a perfect game is:
0.75 x 0.75 x 0.75 x ... (12 times)
which is approximately equal to 0.0723, or about 7.23%.
Using a computer to randomly generate 12 numbers from 1 to 4 and treating 1, 2, or 3 as a strike is a reasonable way to simulate the situation and estimate the probability of Shawna bowling a perfect game. By repeating this process many times, we can get a better idea of the distribution of possible outcomes and the likelihood of different results.
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What is the value of c in the equation?
15.3 = Start Fraction c Over 2.1 End -Fraction
Points A,B, C and D lie on circle M. Line segment BD is a diameter. What is the measure of angle ACD?
The measure of angle ACD for the given circle is 67.5 degree.
What is inscribed triangle?A triangle is inside a circle when a circle encircles it, and each vertex of the triangle touches the circle.
When a circle encircles a triangle, the triangle lies outside the circle and the circle makes one point contact with each of the triangle's sides. The triangle's sides are perpendicular to the circle.
Given that,
The inscribed angle CDA = 1/2(arc AC).
arc AC = 90 degree.
Then:
∠ CDA = 90 / 2
∠ CDA = 45
Triangle ACD is isosceles, so:
∠ ACD + ∠ CAD + ∠ CDA = 180 degree
Here, ∠ ACD = ∠ CAD
∠ ACD + ∠ACD + ∠ CDA = 180 degree
∠ ACD = 180-45 / 2
∠ ACD = 67.5 degree
Hence, the measure of angle ACD for the given circle is 67.5 degree.
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The correct question is:
Points A, B, C, and D lie on circle M. Line segment BD is a diameter.
Triangle A C D is inscribed within circle M. Point B is on the circle between points C and B. A line is drawn to connect points D and B. Lines are drawn from points C and A to point M to form a right triangle. Arcs C D and A D are congruent.
What is the measure of angle ACD?
45.0°
67.5°
112.5°
135.0°
The following are the distances (in miles) to the nearest airport for 16 families. 9, 12, 18, 18, 19, 20, 26, 28, 29, 31, 31, 32, 32, 34, 35, 37. Notice that the numbers are ordered from least to greatest. Make a box-and-whisker plot for the data.
The average of the middle two figures, which are 18 and 19, is the median of the lower half. Q1 = (18+19)/2, which equals 18.5. The average of the middle two values—32 and 32—represents the median of the upper half. Q3 = (32+32)/2 = 32 as a result.
How far is that?Distance is the sum of an object's movements, regardless of direction. Distance can be defined as the amount of space an object has covered, regardless of its starting or ending position.
First, we calculate the median for the lower and higher halves of the data. The values up to the median are found in the lower half and are as follows:
9, 12, 18, 18, 19, 20, 26, 28
The upper half consists of the values from the median onwards, which are:
29, 31, 31, 32, 32, 34, 35, 37
The median of the lower half is the average of the middle two values, which are 18 and 19. Therefore,
Q1 = (18+19)/2
= 18.5.
The median of the upper half is the average of the middle two values, which are 32 and 32. Therefore,
Q3 = (32+32)/2
= 32.
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please help me quickly
Answer:
68 people choose meat over pork
Step-by-step explanation:
subtract 17 from 85
What does 1/3 ÷ 5/6 equal?
Answer:
It would equal 2/5. First flip the 5/6 so then it would be 6/5. Then the 3 and 6 can cross cancel so it would equal to 2 in the numerator.