One possible ordered pair that is a solution of the equation y = 22 - 9x is (2, 4).
What is an ordered pair, and how can we find solutions of a linear equation?
An ordered pair is a pair of numbers (x, y) that represents a point on a coordinate plane. In algebra, we often use ordered pairs to represent solutions of equations, where the x-coordinate represents a variable and the y-coordinate represents the corresponding value of the expression.
To find solutions of a linear equation, we can substitute different values of the variable into the equation and solve for the corresponding values of the expression.
Find the ordered pair:
We are given the equation y = 22 - 9x, and we want to find an ordered pair that is a solution of the equation. To do this, we can choose a value of x and then use the equation to find the corresponding value of y.
Let's choose x = 2. Then, we can substitute x = 2 into the equation and solve for y:
y = 22 - 9(2)
y = 22 - 18
y = 4
Therefore, when x = 2, y = 4, which means the ordered pair (2, 4) is a solution of the equation.
We could also check this by graphing the equation and verifying that the point (2, 4) lies on the line represented by the equation.
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Identify the number of solutions of the polynomial equation. Then find all the solutions. 4x^(5)-8x^(4) +6x^(3)=0
The number of solutions of the polynomial equation, 4x^(5)-8x^(4) +6x^(3)=0 is 5 and the solutions are x=0, x=3/2, and x=1.
The polynomial equation at hand is of degree 5, which means that the highest power of the variable present in any term is 5.
Therefore, we can infer that the equation can be written in the form of ax^5 + bx^4 + cx^3 + dx^2 + ex + f = 0, where a, b, c, d, e, and f are constants and x is the variable. To solve this equation, we can try factoring it:
4x^(5)-8x^(4) +6x^(3)=0
2x^(3)(2x^(2)-4x+3)=0
2x^(3)(2x-3)(x-1)=0
The solutions are x=0, x=3/2, and x=1.
Therefore, the number of solutions of the polynomial equation is 5 and the solutions are x=0, x=3/2, and x=1.
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Write the subtraction sentence that is shown on the number line (Do not reduce the fractions)
We get 3/4 when we subtract 4.4/4 from 7.5/4.
How does subtract example work?
In mathematics, subtraction involves removing anything from a grouping or a number of objects. Whatever is left inside the group gets smaller as you subtract. The following subtraction issue, five minus three equals, is an illustration. 2
Does it say subtract or subtraction?
Short version: "Subtract" and "subtraction" (without the "s") are the proper forms. The fact that many languages have a term with a similar meaning that does contain an "s"—for example, solitaire in French and substrate in Spanish—probably explains how frequently English language learners make the error.
In light of the stated query
There is a number line with two numbers on it.
The one just after 4/4 and another one is after 7/4
Hence, the final answer is 7.5/4 -4.5/4 = 3/4
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SSD Provided Links O RATIONAL EXPRESSIONS Simplifying a ratio of factored polynomials: Linear factors Simplify. (18(3x-4))/(6(x-8)(3x-4)) You may leave the numerator and denominator of your answer in
The simplified ratio of factored polynomials is 18/(6(x-8)).
What is polynomial?A polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. An example of a polynomial is x^2 + 5x + 6.
The question is asking to simplify the ratio of factored polynomials (18(3x-4))/(6(x-8)(3x-4)). To simplify this ratio, we can divide the numerator and denominator by the common factors.
The numerator and denominator both have the factor of 3x-4, so we can divide both the numerator and denominator by this common factor.
The numerator then becomes 18/(6(x-8)) and the denominator becomes 1.
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Sally ate 400 fries in 20 minutes. Find her fry eating in fries per minute
Answer:
20 fries per minute.
Step-by-step explanation:
You are trying to find the amount of fries per minute, assuming that Sally eats the same amount each minute. It is given that there are 20 minutes and 400 fries in all. Divide the total amount of fries with the total amount of minutes:
(400 total fries)/(20 minutes) = (20 fries/minute)
20 fries per minute is your answer.
~
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3 + 10x+ 4x as an algebradic expression
Answer: 10x² + 3x + 4
Step-by-step explanation: I hate math.
what’s the value of k that transforms f into g
Answer:
Below
Step-by-step explanation:
'k' shifts the graph of f(x) UP by ' k' units k = 6 ( look how far the y-axis intercepts are shifted UP= 6 units from -2 to + 4)
Find the exact value of the following, using the point on the unit circle and the terminal side of each angle. State the point you used to find each trigonometric function value.
Show all work for all there.
Cos 17π/6
sin 20π/3
tan 15π/4
The exact values of the trigonometric functions are
To find the exact value of the trigonometric functions, we will use the reference angle and the quadrant in which the terminal side of each angle is located.
For cos 17π/6, the reference angle is π/6 and the terminal side is in the fourth quadrant. The point on the unit circle in this quadrant with a reference angle of π/6 is (√3/2, -1/2). Therefore, the exact value of cos 17π/6 is √3/2.
For sin 20π/3, the reference angle is π/3 and the terminal side is in the first quadrant. The point on the unit circle in this quadrant with a reference angle of π/3 is (1/2, √3/2). Therefore, the exact value of sin 20π/3 is √3/2.
For tan 15π/4, the reference angle is π/4 and the terminal side is in the third quadrant. The point on the unit circle in this quadrant with a reference angle of π/4 is (-√2/2, -√2/2). Therefore, the exact value of tan 15π/4 is 1.
In summary, the exact values of the trigonometric functions are:
cos 17π/6 = √3/2
sin 20π/3 = √3/2
tan 15π/4 = 1
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how do you solve 83 = y/5?
Answer: 415
83 = [tex]\frac{y}{5}[/tex]
83(5) = y
415 = y
Answer:
y = 415
Step-by-step explanation:
83 = y/5
83 x 5 = y
415 = y
A drilling crew dug to a height of -323 feet during their first day of drilling. On the second day, the crew dug down 1933 feet more than on the first day. Describe the height of the bottom of the hole after the second day.
The height of the bottom of the hole after the second day is 2579 feet.
What is Addition?Mathematicians employ the action of addition to combine numbers. The sum of the given numbers is the outcome of addition, or the total of the given numbers.
As per the given data:
Drilling on first day = 323 feet.
Drilling on second day = drilling on first day + 1933 feet
Drilling on second day = 323 feet + 1933 feet
= 2256 feet
Total drilling = Drilling on first day + Drilling on second day
= 323 feet + 2256 feet
= 2579 feet
Hence, the height of the bottom of the hole after the second day is 2579 feet.
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Question 4. (10 points) For what value(s) of the constant λ will y = e^(λx) be a solution of the differential equation y′′ −3y′ + 2y = 0 ? If there are no such λ's state that.
The values of the constant λ that will make y = e^(λx) a solution of the differential equation y′′ −3y′ + 2y = 0 are λ = 1 and λ = 2.
To find the value(s) of the constant λ that will make y = e^(λx) a solution of the differential equation y′′ −3y′ + 2y = 0, we can substitute y = e^(λx) into the differential equation and solve for λ.
First, we need to find the first and second derivatives of y = e^(λx):
y′ = λe^(λx)
y′′ = λ^2e^(λx)
Now, we can substitute these derivatives into the differential equation:
λ^2e^(λx) − 3λe^(λx) + 2e^(λx) = 0
e^(λx)(λ^2 − 3λ + 2) = 0
Since e^(λx) cannot equal 0, we can set the expression in parentheses equal to 0 and solve for λ:
λ^2 − 3λ + 2 = 0
(λ − 1)(λ − 2) = 0
λ = 1 or λ = 2
Therefore, the values of the constant λ that will make y = e^(λx) a solution of the differential equation y′′ −3y′ + 2y = 0 are λ = 1 and λ = 2.
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What is metallurgy? (4 points)
a
the study of how to domesticate animals
b
the science that studies how metals work
c
a Hindu sacred ritual for cleansing the body
d
the belief that natural objects have supernatural beings in them
Answer:
Metallurgy is the science that studies how metals work. It involves the extraction of metals from ores, their purification, and their conversion into useful alloys. Metallurgists also study the physical and chemical properties of metals, as well as their behavior under different conditions such as temperature and pressure.
Step-by-step explanation:
Hello,
the answer is "studies of how metals work."
Reason:
the answer is the science that studies how metals work.
If you need anymore help feel free to ask me!
Hope this helps!
~Matthew1756654
PLEAAAASEEEE HELPP!!!!!!!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!!
The line's y-intercept is equal to -3.
An inequality to express the possible distances Jim and Lee can travel in the taxi is 1.75x + 3.00 < 45.
What is y-intercept?In Mathematics, the y-intercept is sometimes referred to as an initial value or vertical intercept and the y-intercept of any graph such as a linear function, generally occur at the point where the value of "x" is equal to zero (x = 0).
Based on the information provided about the line on the graph, we have the following:
y-intercept of function P = (0, -3).
Next, we would determine the possible distances Jim and Lee can travel in the taxi:
1.75x + 3.00 < 45.
1.75x < 45 - 3
1.75x < 42
x < 42/1.75
x < 24.
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The 1989 U.S. Open golf tournament was played on the East Course of the Oak Hills Country Club in Rochester, New York. During the second round, four golfers scored a hole in one on the par 3 sixth hole. The odds of a professional golfer making a hole in one are estimated to be 3,708 to 1, so the probability is 1/3,709. There were 174 golfers participating in the second round that day.
a. What is the probability that no one gets a hole in one on the sixth hole? (Round your answer to 5 decimal places.)
b. What is the probability that exactly one golfer gets a hole in one on the sixth hole? (Round your answer to 5 decimal places.)
The probability of no one getting a hole in one on the sixth hole during the 1989 U.S. Open golf tournament is 0.95431 and the probability of exactly one golfer getting a hole in one on the sixth hole is 0.04478.
The probability of an event occurring is the number of favorable outcomes divided by the number of possible outcomes. In this case, the probability of a professional golfer making a hole in one is 1/3,709.
a. To find the probability that no one gets a hole in one on the sixth hole, we need to find the probability that each of the 174 golfers does not get a hole in one. The probability of not getting a hole in one is 1 - (1/3,709) = 3,708/3,709. The probability that no one gets a hole in one is (3,708/3,709)^174 = 0.95431. Therefore, the probability that no one gets a hole in one on the sixth hole is 0.95431.
b. To find the probability that exactly one golfer gets a hole in one on the sixth hole, we need to find the probability that one golfer gets a hole in one and the rest do not. The probability of one golfer getting a hole in one is 1/3,709 and the probability of the rest not getting a hole in one is (3,708/3,709)^173. There are 174 ways this can happen, so the probability is 174 * (1/3,709) * (3,708/3,709)^173 = 0.04478. Therefore, the probability that exactly one golfer gets a hole in one on the sixth hole is 0.04478.
In conclusion, the probability of no one getting a hole in one on the sixth hole during the 1989 U.S. Open golf tournament is 0.95431 and the probability of exactly one golfer getting a hole in one on the sixth hole is 0.04478.
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Find the gradients of lines A and B.
26/63 Marks
B
6
4
3
21
1
-3-2-10 1 2 3 4 5 6
2
A
do No
70%
X
Answer:
Gradient of A: [tex]2[/tex]
Gradient of B : [tex]- 1[/tex]
Step-by-step explanation:
Gradient of a line is the slope of the line
Slope = rise/run
rise = difference in y values between any two points on the line
run = difference in x values between the corresponding points
Line A
Take points (0, 1) and (3,7)
rise = 7 - 1 = 6
run = 3 - 0 = 3
slope = gradient = 6/3 = 2
Gradient of a line which goes diagonally up from left to right is positive
Line B
Take points (0,5) and (5, 0)
rise = 0 - 5 = - 5
run = 5 - 0 = 5
slope = gradient = -5/5 = - 1
Gradient of a line which goes diagonally down from left to right is negative
Arrange in order from least to greatest (Radicals)
a. 4√3
b. 3√5
c. 5√2
d. 2√10
e. 2√13
f. 3√6
Therefore, the order from least to greatest is:d<f<a<b<c<e
d. 2√2 x √5 ≈ 5.66, f. 3√2 x √3 ≈ 6.00, a. 4√3 = 4 x √(3) ≈ 6.93, b. 3√5 ≈ 6.71, c. 5√2 ≈ 7.07, e. 2√13 ≈ 7.21
Arranging radicals( surds) in order from least to greatest,To arrange these radicals in order from least to greatest, we need to simplify them and compare the values. We can start by simplifying the radicals using prime factorization.
a. 4√3 = 4 x √(3) = 4 x√(3)
b. 3√5 = 3 x √(5)
c. 5√2 = 5 x√(2)
d. 2√10 = 2 x √(25) = 2 x √(2) x √(5) = 2√2 x√5
e. 2√13 = 2 x √(13)
f. 3√6 = 3 x √(23) = 3 x √(2) x √(3) = 3√2 x √3
Now, we can compare the values of the radicals by comparing their coefficients and the values inside the radical:
a. 4√3 = 4 x √(3) ≈ 6.93
b. 3√5 ≈ 6.71
c. 5√2 ≈ 7.07
d. 2√2 x√5 ≈ 5.66
e. 2√13 ≈ 7.21
f. 3√2 x √3 ≈ 6.00
Therefore, the order from least to greatest is:
d. 2√2 x √5 ≈ 5.66
f. 3√2 x √3 ≈ 6.00
a. 4√3 = 4 x √(3) ≈ 6.93
b. 3√5 ≈ 6.71
c. 5√2 ≈ 7.07
e. 2√13 ≈ 7.21
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M6U3L15: Representing ratios using tables
Set of practical problems
Complete the table to show the amounts of yellow and red paint needed for different numbers of batches of the same shade of orange paint.
Yellow paint (quarts)
Red paint (quarts)
5
6
Explain how you know that these amounts of yellow paint and red paint will give the same shade of orange as the mixture in the first row of the table.
A car is traveling at a constant speed, as shown by the double number line.
How far does the car travel in 14 hours? Explain or demonstrate your reasoning.
The olive trees in an orchard produce 3000 pounds of olives per year. It takes 20 pounds of olives to produce 3 liters of olive oil. How many liters of olive oil can this orchard produce in a year? If you get stuck, consider using the board.
Olives (pounds)
Olive oil (litres)
20
3
100
3000
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1)The completed table is
Yellow paint (quarts) | Red paint (quarts)
5 | 3
6 | 3.6
2) The car travels 98 miles in 14 hours.
3) The orchard can produce 450 liters of olive oil in a year.
What is a ratio?
A ratio is a quantitative comparison between two or more quantities, indicating how many times one quantity contains another. It is expressed as the quotient of the two quantities or in the form of a fraction. Ratios can be represented in various ways, including as decimals, percentages, or fractions.
Complete the table to show the amounts of yellow and red paint needed for different numbers of batches of the same shade of orange paint.
Yellow paint (quarts) | Red paint (quarts)
5 | 3
6 | 3.6
To get the same shade of orange paint, we need to mix yellow and red paint in a certain ratio. This ratio will determine the hue, saturation, and brightness of the final color. In this case, we can see that the ratio of yellow to red paint is 5:3 in the first row of the table, and 6:3.6 (which simplifies to 5:3) in the second row. This means that we need the same amount of yellow and red paint for each batch of orange paint, in a 5:3 ratio.
A car is traveling at a constant speed, as shown by the double number line.
The distance traveled by the car is directly proportional to the amount of time it travels. This means that the ratio of distance to time is constant. From the given double number line, we can see that the car travels 21 miles in 3 hours. Therefore, the ratio of distance to time is 21:3 or 7:1. To find how far the car travels in 14 hours, we can set up a proportion:
distance/time = 7/1
distance/14 = 7/1
distance = 7 x 14
distance = 98 miles
Therefore, the car travels 98 miles in 14 hours.
The olive trees in an orchard produce 3000 pounds of olives per year. It takes 20 pounds of olives to produce 3 liters of olive oil.
To find how many liters of olive oil the orchard can produce in a year, we need to divide the total weight of olives by the amount of olives needed to produce one liter of oil, and then multiply by the conversion factor:
Liters of oil = (Pounds of olives / Pounds per liter) x Conversion factor
Liters of oil = (3000 / 20) x 3
Liters of oil = 150 x 3
Liters of oil = 450
Therefore, the orchard can produce 450 liters of olive oil in a year.
Hence,
1)The completed table is
Yellow paint (quarts) | Red paint (quarts)
5 | 3
6 | 3.6
2) The car travels 98 miles in 14 hours.
3) The orchard can produce 450 liters of olive oil in a year.
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A baseball diamond is a square with side length about 27 m.
The player throws the ball from second base to home plate.
How far did the player throw the ball? Round your answer to
the nearest whole number.
Answer:
half
Step-by-step explanation:
Question below
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V
Answer: The answer t your question is the second one
Step-by-step explanation:
Giving Brainlist
Please show the steps :)
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Let
f(x)=−2x+4 and g(x)=−6x -7. Find f(x)−g(x).
Which points would you find on the graph for |x|+3>7?
7
-5
-4
-2
For the inequality |x| + 3 > 7, the points which are on its graph is -5 and 7.
What is an inequality?
In Algebra, an inequality is a mathematical statement that uses the inequality symbol to illustrate the relationship between two expressions. An inequality symbol has non-equal expressions on both sides. It indicates that the phrase on the left should be bigger or smaller than the expression on the right, or vice versa.
To solve the inequality |x| + 3 > 7, we need to isolate the absolute value by subtracting 3 from both sides, and then split it into two cases -
|x| > 4 and -(|x|) > 4 (by multiplying both sides by -1)
Simplifying the second inequality, we get -
|x| < -4
But this is impossible, because the absolute value of any number is always non-negative.
Therefore, the second inequality has no solutions.
For the first inequality, we have -
|x| > 4
This means that x is either less than -4 or greater than 4.
Therefore, the points on the graph that satisfy the inequality are -
-5 and any value less than -4
Any value greater than 4
So the points on the graph that satisfy the inequality are -
-5 and any value less than -4 or greater than 4.
Therefore, the correct options are -
-5 and 7.
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Shaquille baked 4 times as many chocolate chip cookies as vanilla cupcakes. He baked 48 chocolate chip cookies. Write an equation that can be used to find the number of vanilla cupcakes, x, that Shaquille baked.
Shaquille baked 12 vanilla cupcakes and the equation to depict the number of vanilla cookies is 48 = 4x.
What is substitution method?The algebraic approach to solving simultaneous linear equations is known as substitution technique. The value of one variable from one equation is substituted in the second equation in this procedure, as the name implies. By doing this, a pair of linear equations are combined into a single equation with a single variable, making it simpler to solve. Learn about the graphical approach and the algebraic method before beginning to solve the linear equations using the substitution method.
Let us suppose the number of vanilla cupcakes = x.
The chocolate chip cookies are:
48 = 4x
x = 12
Hence, Shaquille baked 12 vanilla cupcakes and the equation to depict the number of vanilla cookies is 48 = 4x.
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What types of angles are shown by the window-glass shapes? Or, what kind of angles could there be?
In the given window there are both acute and obtuse angles are shown.
What is Coordinate system?a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space
We have to find the types of angles are shown by the window-glass shapes
An angle is formed when two straight lines or rays meet at a common endpoint.
As we observe the angles are less than 180 degrees.
Angles between 0 and 90 degrees are called acute angles.
Angles between 90 and 180 degrees are known as obtuse angles.
Hence, In the given window there are both acute and obtuse angles are shown.
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Draw the image of the indicated translation of the given pre image please
The coordinates of the pre-images are (-7, 8); (-7, 5); (4, 8), and (2, 5), and the pre-image is given below.
Transformation:
A transformation of a quadrilateral refers to any process that changes the size, position, or shape of a four-sided polygon.
To draw the pre-mage, find the coordinates of the pre-mage as given below and plot the points in a graph
Here we have
The coordinates of the quadrilateral are (-4, 5); (-4, 2); (7, 5), and (5, 2)
Given T < -3, 3 > (x, y)
Hence, the coordinates of the pre-images are
(-4, 5) => (-4 -3, 5 + 3 ) = (-7, 8)
(-4, 2) => (-4 -3, 2 + 3) = (-7, 5)
(7, 5) => (7 -3, 5 + 3) = (4, 8)
(5, 2) => (5 - 3, 2+3) = (2, 5)
Therefore,
The coordinates of the pre-images are (-7, 8); (-7, 5); (4, 8), and (2, 5), and the pre-image is given below.
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30 60 90 triangle. Hypotenuse 40. Find legs X and y
Answer:
X = 20 and Y = √3*20, or about 34.64
Step-by-step explanation:
In a 30-60-90 triangle, the hypotenuse is double the length of the shorter leg. To find the length of the shorter leg with the hypotenuse, just divide the length of the hypotenuse by 2. 40/2=20
In a 30-60-90 triangle, the longer leg is equal to the square root of 3 times the length of the shorter leg. √3(20)=34.6410161514, which can be rounded to 34.64
just a quick addition to the great reply above by "krr2007"
Check the picture below.
help plssssssssssssssssssssss
Step-by-step explanation:
the height is 17 feet and the distance from the wall is 8 feet
using pythogras theorem
[tex] {h}^{2} + {b}^{2} = {hypotenuse}^{2} \\ {h}^{2} + {8}^{2} = {17}^{2} \\ h = \sqrt{( {17}^{2} - {8}^{2} } \\ h = 15[/tex]
There are 12 people at a Restaurant and the menu has 13 items.
How many different ways can they order?
The answer is 106993205379072 different ways that the 12 people can order from the 13 items on the menu.
There are a total of 12 people at a Restaurant and each person can order one of the 13 items on the menu. Therefore, the total number of different ways that they can order is 1312 = 106993205379072.
This is because for each of the 12 people, there are 13 choices for what they can order. So for the first person, there are 13 choices, for the second person there are 13 choices, and so on. Multiplying all of these choices together gives us the total number of different ways that they can order:
13 * 13 * 13 * 13 * 13 * 13 * 13 * 13 * 13 * 13 * 13 * 13 = 106993205379072
So the answer is 106993205379072 different ways that the 12 people can order from the 13 items on the menu.
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can somebody help me i need help
The number that Sean counts, considering the sequence of numbers for this problem, is given as follows:
27.
How to obtain the sequence of numbers?Two features are needed to obtain the sequence of numbers:
The initial number.The common difference.Sam's counts by 2 from 15, hence the parameters are given as follows:
Initial number of 15.Common difference of 2.Hence the sequence is given as follows:
15, 17, 19, 21, 23, 25, 27, 29, 31, 33 and 35.
Meaning that the number 27 is counted. We can see above that the sequence is composed only by odd numbers, which eliminates the numbers 16 and 22. As 13 is a number that is less than 15, it is also eliminated.
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The diameter of a circle is 13 in. Find its area to the nearest whole number.
Answer:
area=22/7×13=40.85=41 is the nearest whole number
A_(t)=([1,3,2],[2,5,t],[4,7-t,-6]) For what values of t does A_(t) have an inverse? Find the rank of A_(t) for each value of t.
The rank of At is the number of linearly independent rows or columns in the matrix. Since At has an inverse for all values of t, the rank of At is 3 for all values of t.
In order to determine the values of t for which At has an inverse, we need to find the determinant of At. If the determinant of At is not equal to 0, then At has an inverse. The determinant of At is given by:
|At| = (1)(5)(-6) + (3)(t)(4) + (2)(2)(7-t) - (4)(5)(2) - (7-t)(t)(1) - (-6)(2)(3)
Simplifying the above expression, we get:
|At| = -30 + 12t + 28 - 14t - 40 - 5t2 + 12
Combining like terms, we get:
|At| = -5t2 - 2t - 30
Setting the determinant equal to 0, we get:
-5t2 - 2t - 30 = 0
Using the quadratic formula, we can find the values of t for which the determinant is equal to 0:
t = (-(-2) ± √((-2)2 - 4(-5)(-30)))/(2(-5))
t = (2 ± √(4 - 600))/(-10)
t = (2 ± √(-596))/(-10)
Since the square root of a negative number is not a real number, there are no real values of t for which the determinant of At is equal to 0. Therefore, At has an inverse for all values of t.
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A survey asked 1,200 students which movie genre was their favorite. The results of the survey are shown in the circle graph.
Favorite Movie Genre
Science Fiction
10%
Comedy
20%
Drama
15%
Action
45%
Romance
10%
How many total students chose romance and science fiction movies?
Total students=1,200
Total number of students whose favorite movie genre is Romance= 10%
So,
10% of total students= 10% of 1,200
Therefore, the Total students who chose romance= 10/100*1200=120
Similarly, 10% of students chose Science fiction, and the total number of students who chose science fiction=10/100*1200=120
Therefore,
Total students who chose romance=120
Total students who chose science fiction=120