The probability of hitting the bullseye if the dart is thrown 40 times is approx. 3 times.
What is relative frequency?The quantity of occurrences of an event is referred to as its frequency. The concept of relative frequency is experimental rather than theoretical. It is experimental, therefore if we repeat the trials, we can get different relative frequencies. To determine the frequency, we must first:
Number of occurrences for the entire population
Frequency count for a particular demographic segment
If we know the two frequencies mentioned above, we can use the following formula to get the relative frequency probability. A subgroup's formula is as follows:
Subgroup Count / Overall Count: Relative Frequency
Given that, a player hits the bullseye with a dart 8% of the time.
The probability of hitting the dart is = 8/100.
Now, the probability of hitting the bullseye if the dart is thrown 40 times is:
p = 40 (8/100) = 3.2 times = 3 times.
Hence, the probability of hitting the bullseye if the dart is thrown 40 times is approx. 3 times.
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The table shows the total distance that Myra runs over different time periods.
A 2-column table with 5 rows titled Time and Distance Ran by Myra. The first column is labeled Time (minutes) with entries 0, 2, 4, 6, 8. The second column is labeled Distance (miles) with entries 0.0, 0.4, 0.8, 1.2, 1.6.
Distance is increasing with a speed of 0.2 Miles/Min
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
Time in Minutes Distance in Miles
0 0.0
2 0.4
4 0.8
6 1.2
8 1.6
Here, Myra’s distance is increasing as time increase with a constant Speed.
Now, In every 2 mins distance traveled = 0.4 Miles
Hence, In every 1 min Distance traveled = 0.4/2 = 0.2 Miles/Min
Thus, Distance is increasing with a speed of 0.2 Miles/Min.
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Li-Ming has 20 ounces of lettuce, 12 ounces of chopped nuts, and 7 ounces of cranberries. What is the total weight of the salad?
Answer: 39
Step-by-step explanation: 20 + 12+7
B - 2 is greater than equal to -1
The inequality B -2 ≥ -1 gives the value for B ≥ 1.
What is Inequality?Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.
Given:
B - 2 is greater than equal to -1
Writing the mathematical inequality is
B -2 ≥ -1
B ≥ -1 + 2
B ≥ 1
So, the value of B should be greater than 1.
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There are 2 questions.
Answer:
27) #3 --> 12x - 24 = 60
29) 2x^2 + x - 15
Step-by-step explanation:
27) If x represents the number of boxes, and there are 12 cookies in each box, multiplying 12 by x results in the total number of cookies Kendal bought. However, she kept 2 boxes for herself, which is the same as 2(12) = 24 cookies. Kendal ended up with 60 cookies at the party, so subtracting 24 cookies from the total number of cookies (12x) equals 60 cookies.
29) (3 + x)(2x - 5)
3 * 2x = 6x
3(-5) = -15
x * 2x = 2x^2
x(-5) = -5x
6x - 15 + 2x^2 - 5x =
2x^2 + x - 15
help with this theres a lot of points in it for you
The measure of angles from the given figure A, B, C, D, E, F, G and H are 61°, 130°, 58°, 50°, 84°, 85°, 146° and 145° respectively.
What is an angle?An angle is formed when two straight lines or rays meet at a common endpoint. The common point of contact is called the vertex of an angle.
1) By using the angle sum property of triangle
∠A+58°+61°=180°
∠A+119°=180°
∠A=61°
2) ∠B+50°=180° (Adjacent angles)
∠B=130°
3) ∠A=∠C (Angles of same segment)
∠C=58°
4) ∠D=50° (Vertically opposite angles)
5) 111°+90°+75°+∠E=360° (Sum of interior angles of quadrilateral)
∠E= 84°
6) 111°+84°+130°+130°+x=540° (Sum of interior angles of pentagon)
∠F=x=85°
∠F= 85°
7) 70°+50°+y=180° (angle sum property of triangle)
y=60°
70°+84°+60°+∠G=360° (Sum of interior angles of quadrilateral)
∠G=146°
8) ∠G+∠A+58°+130°+∠H=540°
146°+61°+58°+130°+∠H=540°
∠H=145°
Hence, ∠A=61°, ∠B=130°, ∠C=58°, ∠D=50°, ∠E= 84°, ∠F= 85°, ∠G=146° and ∠H=145°.
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Answer:
Step-by-step explanation:
A: 61°
B:130°
C: 58°
D: 50°
E: 84°
F: 85°
G:146°
H: 145°
What is truth table in discrete mathematics?
In discrete mathematics, a truth table is a table that lists all possible combinations of truth values for a given set of logical variables and shows the resulting truth values of a compound proposition.
In discrete mathematics, a truth table is a table that lists all possible combinations of truth values (usually either true or false) for a given set of logical variables and shows the resulting truth values of a compound proposition (a logical expression formed by combining the variables using logical operators such as AND, OR, and NOT). Each row of the truth table represents one possible combination of truth values, and the columns represent the variables and the various intermediate steps of the logical calculation. Truth tables are often used to determine the truth values of complex propositions and to test the validity of logical arguments.
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The population of the world grows approximately 1. 1% per year. If the population of the world is approximately 8 billion people in 2022, write an exponential equation to model the world population (in billions) after t years
The population after 5 years will be approximately 8.45 billion.
Determine exponential equationThe exponential equation to model the world population (in billions) after t years is P(t) = 8(1.011)^t, where P(t) is the population in billions and t is the number of years after 2022.
To write this equation, we need to use the information provided in the question. The initial population in 2022 is 8 billion, so this is our starting value. The growth rate is 1.1% per year, which can be written as 1.011 in decimal form.
We can use the formula for exponential growth, P(t) = P0(1 + r)^t, where P0 is the initial population, r is the growth rate, and t is the number of years.
Substituting the values for P0 and r into the equation, we get:
P(t) = 8(1.011)^t
This equation can be used to find the population after t years.
For example, to find the population after 5 years, we can substitute t = 5 into the equation and get:
P(5) = 8(1.011)^5 ≈ 8.45 billion
Therefore, the population after 5 years will be approximately 8.45 billion.
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Which of the following is a binomial experiment?
Flipping a coin until it comes up tails
Flipping a coin until 8 heads are recorded
Flipping a coin 10 times and recording if it comes up heads
Flipping a coin by 10 different people and recording the age of each person
Flipping a coin 10 times and recording if it comes up heads is an example of binomial experiment. Option (c) is correct.
Further Explanation:
Given:
The options are follows,
(a). Flipping a coin until it comes up tails.
(b). flipping a coin until 8 heads are recorded
(c). flipping a coin 10 times and recording if it comes up heads
(d). flipping a coin by 10 different people and recording the age of each person
Explanation:
Conditions for binomial experiment are as follows,
(1). The experiment should be independent means that the probability of successive trial will not be affected by the previous trial.
(2). The experiment should have a finite number of trials.
(3). The probability of success will remain same for each trial.
(4). The experiment should have only two outcomes.
Flipping a coin has only two outcomes head or tail.
Flipping a coin 10 times and recording if it comes up heads is an example of binomial experiment. Option (c) is correct.
Option (a) is not a binomial experiment as the experiment is not for finite number of times.
Option (b) is not a binomial experiment as the experiment is not for finite number of times.
Option (c) is a binomial experiment.
Option (d) is not a binomial experiment as the experiment doesn’t have the same probability of occurrence.
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Answer details:
Grade: College
Subject: Statistics
Chapter: Binomial experiment
Keywords: binomial experiment, flipping a coin, tails, heads, recorded, 10 different people, probability, each person.
This experiment has a fixed number of trials (10), each trial has only two possible outcomes (heads or tails), the probability of success (heads) is the same for each trial (0.5), and there is no interdependence between the trials.
The following features of the binomial experiment apply:
There are a set number of trials in the experiment.In a trial, there are only two possible outcomes: success or failure.The likelihood of success is the same for every trial.The trials run separately from one another.These traits allow us to identify the following characteristics of the binomial experiment:
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Compute finance charges for installment purchases
1. If Sal saves $55 per month, express his total savings for x years as an
expression in terms of x.
2. Jean bought a $1,980 snow thrower on an installment plan. The installment agreement included a 10% down payment and 18 monthly payments of $116 each.
a. How much is the down payment?
b. What is the total amount of the monthly payments?
c. How much did Jean pay for the snow thrower on the installment plan?
d. What is the total finance charge?
Down payment = $198, total monthly payment = $2088, installment price = $2286, finance charge = $1782
What is down payment?Down payment is the amount of money that a purchaser needs to pay at the early stage of purchasing an expensive goods.
How to calculate down payment, total monthly payment and total finance charge?
Given, purchasing price = $1980, 18 monthly payments of $116 each.
down payment = 10%
amount of down payment = $1980 × 10/100
= $198
Total amount of monthly payment = $116 × 18 = $2088
Total paid for the snow thrower on the installment plan = Down payment + all monthly payment = $198 + $2088
Total installment price = $2286
total finance charge = Stated purchased price - down payment
= $1980 - $198
= $1782
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If Sal saves $55 per month, the expression for his total savings for x years is 55x.
What is amount?Amount is a term used to describe the total sum of money, quantity, or value of something. It is usually used to refer to a specific figure or a set of figures, such as the amount of money in a bank account, the number of items in a store, or the total cost of a purchase. Amount can also be used to describe the amount of time, energy, or effort put into something.
a. The down payment is 10% of $1,980, which is $198.
b. The total amount of the monthly payments is 18 x $116, which is $2,088.
c. Jean paid a total of $1,980 + $198 = $2,178 for the snow thrower on the installment plan.
d. The total finance charge is $2,088 - $2,178 = $90.
If Sal saves $55 per month, the expression for his total savings for x years is 55x.
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tickets to the play cost $3 for children and $5 dollars for adults. for last bight performance there were 110 people in the audience and they made a total of 450 in ticket sales. how many children and how many adults attended the play (solve by substitution)
Answer:
50 children tickets; 60 adult tickets
Step-by-step explanation:
Let a = number of adult tickets.
Let c = number of children tickets.
a + c = 110
5a + 3c = 450
-3a - 3c = -330
5a + 3c = 450
------------------------
2a = 120
a = 60
a + c = 110
c = 50
Answer: 50 children tickets; 60 adult tickets
Twice the difference of a number and 7 equals 3
(GIVING AWAY 15 POINTS)
Answer:
x-17/2
Step-by-step explanation:
here, we can set the number to x
the question is asking for 2(x-7)=3
let's solve this by distributing
2x-14=3
2x=17
x=17/2
Answer: 2 (x - 7) = 3
Use the distributive property: 2x - 14 = 3
2x - 14 = 3 + 14
2x = 17
2x/2 = 17/2
x = 8.5
Does someone mind helping me with this problem? Thank you!
The equation of the line is y = -4x - 15.
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
The line y = m(1)x + c is perpendicular to y = x/4 - 2.
This means,
y = (1/4)x - 2 is in the form of y = m(2)x + c
So,
m(1) x m(2) = -1
m(1) = -1 / (1/4)
m(1) = -4
Now,
The line intersects (4, -1).
So,
y = -4x + c
-1 = -4(4) + c
-1 = -16 + c
c = - + 16
c = -15
Thus,
The equation of the line perpendicular to y = x/4 - 2 is y = -4x - 15.
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Coach Trevor packs a bag with 16 basketballs and footballs. The rato of basketballs to footballs is 5 : 3. Basketballs weigh 22 ounces, and footballs weigh 16 ounces, How much does the basketballs and footballs weigh in all?
Answer: 316 ounces
Step-by-step explanation:
5 + 3 = 8 (This tells us that there are a total of 8 "parts" in the ratio)
16/8 = 2 (Each part has a total of 2 balls)
2*5 = 10 basketballs
2*3 = 6 footballs
10 basketballs * 22 ounces = 220 ounces
6 footballs * 16 ounces = 96 ounces
Total = 220 + 96 = 316 ounces
Hoped this helped! Leave a comment if you have any other questions.
A cone has a radius of 4 units and a height of 6 units. Its volume is cubic units. If a cylinder has the same radius and the same height as the cone, then its volume is cubic units.
Volume of cone = 100.48 cubic units. and The Volume of cylinder= 301.44 cubic units.
One of the fundamental three-dimensional forms in geometry is the cylinder, which has two distant, parallel circular bases. At a certain distance from the centre, a curved surface connects the two circular bases. The axis of the cylinder is the line segment connecting the centres of two circular bases. The distance between the two circular bases is used to define the cylinder's height. An LPG gas cylinder is one of the genuine examples of a cylinder. The cylinder is a three-dimensional object with two essential properties: surface area and volume. The whole surface area of the cylinder is composed of the combined curved surface area of the cylinder plus the areas of the two circular bases.
A cone has a radius of 4 units and a height of 6 units.
Volume of cone = [tex]V=\frac{1}{3}\pi r^2h[/tex]
Where, r=4 and h=6
Volume of cone = [tex]V=\frac{1}{3}\pi 4^2\times 6[/tex]
Volume of cone = 100.48 cubic units.
If a cylinder has the same radius and the same height as the cone.
Volume of cylinder [tex]V=\pi r^2h[/tex]
Where, r=4 and h=6
[tex]V=\pi \times 4^2\times 6[/tex]
Volume of cylinder= 301.44 cubic units.
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A person places $6770 in an investment account earning an annual rate of
7.6%, compounded continuously. Using the formula V = Pert, where Vis
the value of the account in t years, P is the principal initially invested, e is the
base of a natural logarithm, and r is the rate of interest, determine the
amount of money, to the nearest cent, in the account after 13 years.
The future value in 13 years when compounded continuously is; $18183.25
How to solve Continuous Compounding?Continuous compounding is defined as the process of calculating interest and reinvesting it into an account's balance over an infinite number of periods.
The formula for continuous compounding is;
V = Pe^(rt)
where;
V is the value of the account in t years
P is the principal initially invested
e is the base of a natural logarithm.
r is the rate of interest
We are given;
P = $6770
r = 7.6% = 0.076
t = 13
Thus;
V = 6770 * e^(0.076 * 13)
V = $18183.25
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two angles are supplementary if the sum of their measures is 180. angles A and B are supplementary. if the measure of angle A is 78 write and solve an addition equation to find the measure of angle B.
Answer:
78° + B = 180°
B = 102°
Step-by-step explanation:
"Supplementary" means angle A and B added together are 180°.
We know A is 78, but we don't know B
Write an equation:
A + B = 180°
Fill in what we know.
78° + B = 180° this is the equation the question is asking for.
To solve, subtract 78 from both sides of the equation.
B = 102°
pls help me i need this answer
solve for p pls
For the given algebraic expression, the value of p is 0.2 .
Linear Expression
A linear expression can be represented by a line. The standard form for this equation is: y=mx+b , for example, y=x+9. Where:
m= the slope.
b= the constant term that represents the y-intercept
For the given example: m=1 and b=9.
The exercise presents the following algebraic expression:
14=p*70 and it asks you the value of p. Thus, you should divide the number 14 by 70. See below.
14=p*70
p=14/70
p=2/10
p=0.2
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A boat traveled 165 miles each way downstream and back. The trip downstream took 11 hours.
The trip back took 15 hours. What is the speed of the boat in still water? What is the speed of
the current?
The speed of the boat in still water is 20.625 km/hr. and the speed of the current is 66 km/hr.
What is the relation of speed and distance?The speed formula is speed = distance / time.
Consider x= speed of current and y = speed of still water
The speed of the boat in still water can be calculated by dividing the total distance traveled by the total time taken;
(165 km x 2 = 330 km)
(5 hours + 11 hours = 16 hours).
Therefore, the speed of the boat in still water
330 km/16 hours = 20.625 km/hr.
The speed of the current can be calculated by dividing the total distance traveled by the total time taken for the downstream trip ;
(165 km x 2 = 330 km)
(5 hours).
Therefore, the speed of the current = 330 km/5 hours = 66 km/hr.
Hence,
speed of still water = 20.625 km/hr.
speed of current = 66 km/hr
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What is the value of x?
The value of x is 2√13 units.
The correct option is D.
What is Pythagoras' theorem?In a right-angled triangle, the square of the hypotenuse side is equal to the sum of the squares of the other two sides, according to Pythagoras's Theorem.
Given:
A right-angled triangle.
The value of the base is 12 units.
And the length of the perpendicular is 8 units.
Therefore,
x = √{(8)² + (12)²}
x = √(64 + 144)
x = √208
x = 2√13
Therefore, x = 2√13.
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S
ir br
5. A company is designing a new
cylindrical package. The volume of
the package is 87.92 in.³. The
radius is 2 inches. Use 3.14 to
approximate 7 to answer the
questions.
Part A
To the nearest inch, how many
inches is the height of the
cylindrical package?
Answer:
Step-by-step explanation:
87.92*3.14/4=504.3
What is the value of this expression when c=-4 d= 10
Answer:
9
Step-by-step explanation:
If c = -4 d = 10, we can re-write the expression:
[tex]\frac{1}{4} (-4^{3}+10^{2} )[/tex]Simplifying what is in the parenthesis:
[tex]\frac{1}{4} (-64 +100)[/tex][tex]\frac{1}{4}[/tex] × 369Therefore when c = -4 d = 10, [tex]\frac{1}{4} (-4^{3}+10^{2} ) = 9[/tex].
Answer: B. 9
Step-by-step explanation:
Let's learn some BIDMAS rules!
BIDMAS is an order of operation.
Multiply first or the indices? We can solve it with order of operations.
Here we go ↓↓
B = Brackets
I = Indices (³ ²)
D = Division
M = Multiplication
A = Addition
S = Subtraction
NOTE = Multiply or divide first? We do it from left to right
NOTE = Addition or Subtraction? We also do it from left to write in an equation.
Step 1 :
We replace all the letters with the given value, this make it :
[tex]1/4 (-4^{3} + 10^{2} )[/tex]=?
Step 2 :
Now, according to the rules, we do the numbers in the brackets first, now, in the brackets, there are indices, so we do those.
Which makes it :
1/4(-64+100)= ?
Step 3 :
Now we add the integers inside the brackets, remember, whenever the equation is like this, it is telling us it is a multiplication, here, it will be 1/4 x (-64+100) . In algebra, we don't use the × sign as it can be misinterpreted as [tex]x[/tex] .
1/4 (-64+100 = 36)
1/4 (36)
=
1/4 x 36
So we have = 1/4 x 36 at last.
Step 4 =
Do the multiplication!
1/4 x 36 = 9
So the answer is 9
Gwen has a home-based business making and selling scented soaps. She intially spent $96 to purchase soap-making equipment, and the materials for each kilogram of soap cost $9. Gwen sells the soap for $25 per kilogram. Eventually, she will sell enough soap to cover the cost of the equipment. How much soap will that be? What will be Gwen's total sales and costs be?
Gwen's total sales and costs would be; 50 dollars.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Consider that x represent the number of pounds of soap that she makes and eventually sells.
we are given that Gwen intially spent $96 to purchase soap-making equipment, and the materials for each pound of soap cost $9. This means that the total cost of making x pounds of soap would be;
9x + 96
thus her revenue for x pounds of soap would be
25 × x = 25x
If she eventually sells enough soap to cover the cost of the equipment, then we get;
9x + 96 = 25x
25x - 9x = 96
x = 96/16
x = 6
she would need to sell make and sell 6 soaps.
The cost would be 9x + 96 = 150
The total sales would be;
25 x 6 = 150
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how do you do this? (Write an equivalent expression without parentheses. Then simplify the result
m-(8-3m)
The expression m - (8 - 3m) is equivalent to the expression 4m - 8.
What is an equivalent?The equivalent is the expression that is in different forms but is equal to the same value.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The expression is given below.
⇒ m - (8 - 3m)
Simplify the expression, then we have
⇒ m - (8 - 3m)
⇒ m - 8 + 3m
⇒ 4m - 8
The expression m - (8 - 3m) is equivalent to the expression 4m - 8.
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A set of data is represented in the stem plot below.
Part A: Find the mean of the data. Show each step of work. Round answer to the nearest whole number. (2 points)
Part B: Find the median of the data. Show each step of work. (2 point)
Part C: Find the mode of the data. Show each step of work. (2 points)
Part D: Compare your values for mean, median, and mode from parts A, B, and C. Explain which value would best represent the data, and why? (4 points)
A. Mean = 71
B. Median = 75
C. Mode = 0
D. Mean is used to represent data, because mean measures central tendency.
What is mean , median and mode?A data set's mean (average) is calculated by summing all of the numbers in the set, then dividing by the total number of values in the set. When a data collection is ranked from least to greatest, the median is the midpoint. The number that appears most frequently in a data set is called the mode.
We have the Data set: 35, 42, 43, 51, 55, 57, 62, 66, 68, 69, 74, 75, 76, 77, 78, 79 , 82, 84, 86, 88, 93, 94, 101
So, Mean = average
= sum of all numbers / total number of values .
= 1635 / 23
= 71.08
= 71
and, Median = middle term = 12th term = 75
lastly, Mode = Most repeated term or term that has high frequency.
Here no terms are repeating so mode = 0
A comparison of the mean, median, and mode
Data are represented using the mean.
Because it averages all of the values in the data set, the mean is the most widely used measure of central tendency.
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What is the result of multiplying the first equation by 2 and adding to the second equation?
6x − y = 7
2x + y = 5
A. 14x + 3y = 19
B. 14x + y = 19
C.14x - y = 19
please help
The result of the operation is 14x - y = 19
How to determine the result of the operationFrom the question, we have the following parameters that can be used in our computation:
6x − y = 7
2x + y = 5
The operation is given as
Multiplying the first equation by 2 Adding to the second equationUsing the above as a guide, we have the following:
12x − 2y = 14
+ 2x + y = 5
Evalaute the sum
14x - y = 19
Hence, the solution is 14x - y = 19
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What are the measures of angles B and C?
In a parallelogram, the opposite angles have equal measures. Therefore, 2n + 32 = 4n - 2
32 = 2n - 2
34 = 2n
17 = n
What term should be inserted in m² +........+ 1/m² it a perfect square?
Answer: The given expression is:
m² +........+ 1/m²
We can notice that the expression has an even number of terms, and the first and last term are perfect squares, which suggests that it might be possible to write the expression as the square of a binomial.
Let's try to write the expression in the form of (a + b)²:
(a + b)² = a² + 2ab + b²
If we set a = m and b = 1/m, we get:
(a + b)² = m² + 2(m)(1/m) + (1/m)² = m² + 2 + 1/m²
Comparing this with the given expression, we see that it is the same as the given expression with 2 added to it.
Therefore, to make the given expression a perfect square, we need to add 2 to it.
So, the term to be inserted is 2.
The expression m² +........+ 1/m² can be written as (m + 1/m)² - 2.
Step-by-step explanation:
Ethan has pp pennies and nn nickels. He has no more than 20 coins altogether. Write this situation as an inequality.
Answer:
P+n<20
Step-by-step explanation:
The given situation can be expressed as an inequality as p + n ≤ 20.
What is Linear Inequalities?Linear inequalities are defined as those expressions which are connected by inequality signs like >, <, ≤, ≥ and ≠ and the value of the exponent of the variable is 1.
Given that,
Ethan has p pennies and n nickels.
Number of pennies = p
Number of nickels = n
Total number of coins is no more than 20.
This means that the combined total of pennies and nickels does not exceed 20.
sum of p and n is less than or equal to 20.
p + n ≤ 20
Hence the required inequality expression is p + n ≤ 20.
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If a shopkeeper gives you a 15%discount on shirt of having total price 50. What price will you give after discount ?
If a shopkeeper gives you a 15% discount on shirt of having total price 50, the price you will give after the 15% discount is 42.5 dollars.
If the original price of the shirt is 50 dollars, and the shopkeeper gives a discount of 15%, then the discount amount is calculated by:
Discount = Original price x Discount rate
Discount = 50 x 0.15
Discount = 7.5 dollars
The discounted price is calculated by subtracting the discount from the original price:
Discounted price = Original price - Discount
Discounted price = 50 - 7.5
Discounted price = 42.5 dollars
The discount rate of 15% means that you will save 15% of the original price, which is 7.5 dollars in this case. The discounted price is the price after subtracting the discount amount from the original price.
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we have two fractions 5/12 and 3/4 and we want to rewrite them so they have a common denominator
Answer:
Below
Step-by-step explanation:
So you need to find a denominator that both will divide 'evenly' into...
12 would work.....4 will divide into it 'evenly' = 3
You do to need to do anything to the '5/12 ' ....
So change 3/4 to 12ths by multiplying by ' 1 ' in the for 3/3
3/4 * 3/3 = (3* 3 ) / ( 3*4 ) = 9 / 12 Done.