The expected value of betting 32 is -$0.053, making the 4th option the right choice.
In the question, we are asked for the expected value of betting on 32, given that if we bet $1 on the number 32 and win, the house pays $36, and there are 38 slots.
The probability distribution can be shown as:
x $35 -$1
p(x) 1/38 37/38
as, if we get 32, which has the probability of 1/38, the winning number, we gain $35, and for the rest, having a probability of 37/38, the losing number, we lose -$1.
Thus, the expected value can be calculated as E(x) = ∑x.p(x).
Thus, the expected value = $35(1/38) + (-$1)(37/38) = -$2/38 = -$0.05263 ≈ -40.053.
Hence, the expected value of betting 32 is -$0.053, making the 4th option the right choice.
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Which expression is equivalent to 7x^2 square root of 2x^4 • 6 square root of 2x^12, if x does not equal 0?
For the given expression, the correct answer is C, 7x².√2x⁴.6√2x¹² = 84x¹⁰.
Finding the value of an algebraic expression when a specified integer is used to replace a variable is known as evaluating the expression. We use the given number to replace the expression's variable before applying the order of operations to simplify the expression.
A variable is a letter, like x, y, or z, that stands in for an arbitrary number. You must substitute a number for each variable and carry out the arithmetic operations in order to evaluate an algebraic expression. Since 6 + 6 equals 12, the variable x in the example above is equal to 6.
Given,
the expression is 7x².√2x⁴.6√2x¹²,
Solving the under root,
⇒ 7x².√2x².6√2x⁶
⇒ 7x² . √2 x². 6. √2 . x⁶ [√2 × √2 = 2]
⇒ 7 × 6 × 2 × x¹⁰ = 84 x¹⁰
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Here is a table that shows the ratio of flower to water in an art pace, complete the table with values in the equivalent ratio
The table with values in the equivalent ratio is completed as
1 : 1/2
4 : 2
6 : 3
1/2 : 1/4
What equivalent ratio?When we compare ratios, equivalent ratios are the ones that don't change. In order to determine whether or not different ratios are equivalent, we compare them side by side. An example makes it clear that the ratios 1:2 and 2:4 are equivalent. With the aid of division and multiplication, we can determine the two equivalent ratios.
In order to create a ratio that is equal to one that is already given, we must multiply or divide the given ratio's two terms by a non-zero number.
1 cup of flour = 1/2 cup of water
4 cups of flour = 1/2 × 4
= 2 cups of water
1/2 cup of flour = 1/2 × 1/2
= 1/4 cups of water
2 cups of water = 4 cups of flour
1 cup of water = 4/2
= 2 cups of flour
3 cups of water = 2 × 3
= 6 cups of flour
Thus, the table with values in the equivalent ratio is completed as 1 : 1/2, 4 : 2, 6 : 3 and 1/2 : 1/4.
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A polynomial of the fourth degree has both non-real roots and real roots with multiplicities.
If two of the roots are -3 and 7 - 2i, identify this polynomial.
The polynomial is x^4 - 8x^3 - 30x^2 + 144x + 405 = 0. The solution is obtained using the concept of bi-quadratic equation.
What is bi-quadratic equation?A 4-degree equation is a bi-quadratic equation.
Sometimes the phrase "bi-quadratic equation" is used as a substitute for the phrase "quartic equation." Such problems variable are straightforward to resolve because they can be reduced to quadratic equations in the variable x=z^2, which can then be solved for x using the quadratic formula and then in terms of the original variables by calculating the square roots.
Here,
We are given two roots of the bi-quadratic equation which are -3 and 7 - 2i.
Now, we will find the other two roots of the bi-quadratic equation by using the conjugates of the given roots.
In order to find the conjugate of complex numbers, we have to change the sign of the imaginary part.
So, we will get the conjugate of 7 - 2i = 7+2i
Thus, all the four roots of the bi-quadratic equation are -3, 7+2i, 7 - 2i and -3.
If two roots of an equation are given as a and b, then we can express the equation as (x-a) (x-b) = 0.
So, using this, we will form the equation with two imaginary roots 7+2i and 7−2i, which is given as:
[x-(7−2i)][x-(7+2i)]=0
⇒[x-7+2i][x-7-2i]=0
⇒[(x-7)+2i][(x-7)−2i]=0
Using the identity (a+b)(a-b)=a^2-b^2 , we get
(x-7)^2-(2i)^2=0
∵i=√-1
⇒(x-7)^2+(√-4)^2=0
⇒(x-7)^2+(-4)=0
⇒(x-7)^2 - 4=0
Now we will form the equation with roots -3 and -3, which is
[x-(-3)][x-(-3)]=0
⇒(x+3)^2=0
Finally, we will now find the product of these two quadratic equations to get the required bi-quadratic equation
⇒[(x-7)^2 - 4] [(x+3)^2]=0
⇒[x^2 + 49 - 14x -4] [x^2 + 9 + 6x]=0
⇒[x^2 + 45 - 14x] [x^2 + 9 + 6x]=0
⇒x^4 + 9x^2 + 6x^3 + 45x^2 + 405 + 270x - 14x^3 - 126x - 84x^2 = 0
⇒x^4 - 8x^3 - 30x^2 + 144x + 405 = 0
Hence, the required polynomial is x^4 - 8x^3 - 30x^2 + 144x + 405 = 0
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Which equation is a linear function?
Answer: the third one
y=2^x-1
Step-by-step explanation:
Example: 300 000 + 5 < 300 500
a.75001+9____75100
The correct answer is 75001+9< 75100.The 75010 is less than 75100.Because we can count to prove it.
When can we use greater than and less than symbols?The greater than and less than symbols are generally used to represent the inequality expressions. The symbol used to represent greater than is “>” and less than is “<”. If one value is larger than the other value we use greater than. Similarly,if we want to represent one value that is less than the other value we use less than.
How do we find less than greater than?Many teachers use the Alligator Method analogy to teach greater than and less than. They will draw an Alligator mouth on the greater than and less than signs.We can say the alligator is going to want to eat more.
Now
75001+9= 75010
This will seventy five thousand and ten
75100 = seventy five thousand and one hundred
So, 75001+9 <75100
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Find a spot at a whiteboard and complete the following:
There are two malls that open at the same time.
The number of people in Mall A is modeled by -t² +9t + 36,
and the number of people in Mall B is modeled by - t² + 11t + 12,
where t represents the number of hours since the mall opened.
A) Write an expression that models how many more people are in Mall A than Mall B at time t.
B) How many people are in Mall A when t = 3 hours?
On solving the provided question, we can say that we have two quadratic equations; t² +9t + 36 > t² + 11t + 12 => t>12
What is quadratic equation?A quadratic equation is x ax2+bx+c=0, which is a quadratic polynomial in a single variable. a 0. The Fundamental Theorem of Algebra ensures that it has at least one solution since this polynomial is of second order. Solutions may be simple or complicated. An equation that is quadratic is a quadratic equation. This indicates that it has at least one word that has to be squared. The formula "ax2 + bx + c = 0" is one of the often used solutions for quadratic equations. where are numerical coefficients or constants a, b, and c. where the variable "X" is unidentified.
here,
we have two quadratic equations
Mall A is modeled by -t² +9t + 36,
Mall B is modeled by - t² + 11t + 12,
t² +9t + 36 > t² + 11t + 12
-2t > -24
t>12
Mall A when t = 3 hours = [tex]3^2 +9*3 + 36 = 9+27+36 = 72[/tex]
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please help asap do both
From the following set of points, 26 is a trapezoid but not a isosceles trapezoid while 27 is not a trapezoid at all.
What is trapezoid?A closed, four-sided trapezoid in two dimensions has a perimeter and an area. Two of the sides are considered the bases of the trapezoid because they are parallel to one another.
The non-parallel sides of a trapezoid are referred to as its legs or lateral sides. The altitude is that distance between two parallel sides that is shortest. The area of a trapezoid can be easily calculated because the opposite sides are parallel to one another.
If the given points make an isosceles trapezoid then AB and CD must be equal and BC and AD must not be equal
Lets solve
26. AB = [tex]\sqrt{(-4-(-4))^2+(-1-6)^2}[/tex] = 7
CD = [tex]\sqrt{(2-(2))^2+ (6-(-4))^2}[/tex] = 10
BC = [tex]\sqrt{(-4-2)^2+ (6-6)^2}[/tex] = 6
AD = [tex]\sqrt{(-4-2)^2+ (-1-(-4))^2}[/tex] = 3√5
Thus, this not an isosceles trapezoid.
27. AB = [tex]\sqrt{(-5-2)^2+(2-6)^2}[/tex] = 8.06
CD = [tex]\sqrt{(-1-2)^2+ (6-1)^2}[/tex] = 5.83
BC = [tex]\sqrt{(-5-(-1))^2+ (6-6)^2}[/tex] = 6
AD = [tex]\sqrt{(2-(-5))^2+ (-1-2)^2}[/tex] = 3√5
None of the side make an trapezoid and it is not a isosceles trapezoid
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I need help with this 2 problems! Please help and thank you
The Pythagorean theorem states that the square of a right-angled triangle's hypotenuse is equal to the sum of the squares of its other two sides.
How do you use the hypotenuse leg theorem?You can demonstrate the congruence of two right triangles using the Hypotenuse-Leg (HL) Triangle Congruence Theorem, which is a particular instance. A right triangle is congruent with another right triangle if its hypotenuse and one of its legs are congruent with its hypotenuse and one of its legs.
The hypotenuse (longest side) square in a right-angled triangle is equal to the sum of the squares of the other two sides, according to the Pythagorean theorem (base and perpendicular).
The right triangles are said to be congruent if their respective hypotenuses and legs are congruent with one another, according to the hypotenuse-leg (HL) theorem. By the HL theorem, these triangles are congruent.
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I need help in my hw ASAP, this is ki11ing me ~.~
Answer:
look back through your lessons.
Step-by-step explanation:
what do you know about this question? if you go back through your lessons, you might be able to find a way to do this equation.
A Middle School is having a fundraiser they sold a total of 300 taco and enchiladas. Tacos sold for $2 and enchiladas sold for $3. They made a total of $780. How many individual tacos did they sell?
120 tacos were sold that day. I have attached the work down below.
Rhombus DEFG with vertices D(1, 4), E(5, 5), F(4, 1),
and G(0, 0); 270° clockwise rotation about R(6,8)
On solving the provided question, we can say that vertices D(1, 4), E(5, 5), F(4, 1) and G(0, 0), area of rhombus = S*S = 5*5 = 25 cm sq.
what is Rhombus?A rhombus is an equal-sided quadrilateral in Euclidean plane geometry. The term "equilateral triangle" also refers to a quadrilateral whose sides are of the same length. A parallelogram has a unique variation known as a rhombus. In a rhombus, the opposite sides and angles are parallel and equal. A rhombus's diagonal is split in half by a right angle, and each of its sides is the same length. Rhombic diamonds and diamonds are other names for rhombuses. The length of every side is the same. Diagonals are equal in a rhombus. At a 90° angle, parallel lines split in half. 180 degrees is the sum of adjacent angles.
here,
vertices D(1, 4), E(5, 5), F(4, 1) and G(0, 0)
so area of rhombus = S*S = 5*5 = 25 cm sq.
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A new car is purchased for $26, 000 and over time its value depreciates by one half every 5 years. What is the value of the car 7 years after it was purchased, to the nearest hundred dollars?
Answer:
$203
Step-by-step explanation:
Please mark brainliest
Identify the method that will be used to solve for x: 5x + 6x = 22
The method that will be used in solving for x in the expression 5x + 6x = 22 is simplifying using addition and division operation
solving the equation gives x to be equal to 2
How to solve for the expressionThe expression given 5x + 6x = 22 is a linear function having one unknown variable and the solution is sought by using the relevant mathematical operations
Applying addition operation in solving for x
5x + 6x = 22
11x = 22
Applying division operation in solving for x
11x = 22
x = 2
hence, the solution of the the expression is x = 2
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Which gives the correct values for points A, B, C, and D?
Option (D) A: -2/5, B: -1/5, C: -4/5, and D: -2/5 given the correct value of the number line.
What is a number line?A number line is a diagram of a graduated straight line used to represent real numbers in introductory mathematics.
It is assumed that every point on a number line corresponds to a real number and that every real number corresponds to a point.
The set R of all real numbers, considered as a geometric space, namely the Euclidean space of dimension one, is the formal definition of the number line in advanced mathematics, also known as a real line or real number line.
So, according to the given number line:
A: -2/5
B: -1/5
C: -4/5
D: -2/5
Therefore, option (D) A: -2/5, B: -1/5, C: -4/5, and D: -2/5 given the correct value of the number line.
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What is the slope-intercept equation for this line?
Which of the following polynomials is in standard form?
SHESH Tecaci
ہے
te
O A. F(x) = 5x + 2x³ - x² - 3
OB. F(x) = -3+5x - x² + 2x³
O c. F(x) = -3 - x² + 2x³ + 5x
O D. F(x) = 2x³ - x² + 5x − 3
-
F(x) = 2x³ - x² + 5x − 3 is the polynomial that is in standard form. Thus, option D is correct.
What is polynomial?Algebraic expressions called polynomials can include exponents that are multiplied, divided, or added. Different types of polynomials exist. specifically, monomial, binomial, and trinomial. A polynomial with only one term is referred to as a monomial. A polynomial with two unlike terms is referred to as a binomial. An algebraic expression with three terms is known as a trinomial.
Monomials - The term "monomial" refers to algebraic expressions with a single term. In other words, it is an expression that includes any number of similar terms. Hence the name "Bi"nomial," binomials are algebraic expressions with two unlike terms. Trinomials - Trinomials are algebraic expressions with three dissimilar terms, hence the name "Tri"nomial.
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i need help with point slope form
The equation of this parallel line using point slope is y = 4x - 31.
What is point-slope form?The equation of a straight line that passes through a particular point and is inclined at a specific angle to the x-axis may be found using the point slope form. Every point on a line must satisfy the equation for the line in order for it to exist. This implies that a line is represented by a linear equation in two variables.
Given that the equation of a line is y = 4x - 2.
Here, we observe that the slope m = 4
Parallel lines have the same slope. So, the slope of the new line is:
m = 4
Given that points (x1, y1) = (5, -11) are also in the new parallel line.
Using the Point-Slope form we can write:
y - y1 = m (x - x1)
Substitute the value of x and y coordinates in the above equation:
y - (-11) = 4 (x - 5)
y + 11 = 4x - 20
y = 4x - 20 -11
y = 4x - 31
Hence, the equation of this parallel line using point slope is y = 4x - 31.
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please answer all questions 30 points
Answer:
20) Rhombus | 21) Rhombus | 22) Square
Step-by-step explanation:
20) All sides are congruent, but there is no right <'s, and therefore it is just a Rhombus.
21) A Rhombus has diagonals that bisect each other and are congruent, which is shown in 21.
22) A square is a shape with all sides congruent and at least 1 right angle, which the diagram meets.
Hopefully this helps!
PLEASE ANSWER!!! I DONT UNDERSTANT THISJoaquin has $0.75 to purchase a bottle of water from the vending machine. How many different combinations of change can he have if he only has nickels, dimes, and quarters? List the possibilities.
Enter the Correct 3 Digit Code (don't forget the decimal) *
Answer:
4.85
Step-by-step explanation:
8.09-3.24+4.85
1. The height of a right triangular prism is 1 5/6 inches. Each side of the triangular base measures 10 inches, and the height of the base is 8 2/3 inches. The triangular prism is placed atop a cube whose side measures 10 inches so that one of the triangular prism’s bases lies completely on one side of the cube.What is the surface area of the solid formed?
100 POINTS AND IF YOU INCLUDE ACCURATE DIAGRAM, BRAINLIEST!!!!!!!
Answer:Therefore the surface area of the solid formed is about 598.33 in²
Step-by-step explanation:If the height of a right triangular prism is 1 5/6 inches. The surface area of the solid formed is: 598.33 in².
Surface area
First step
Right triangular prism=1 5/6 inches= 11/6 inches
Height of the base=8 2/3 inches = 26/3 inches
Second step
Surface area = 5(10× 10) + (0.5÷ 10 × 26/3) + 3(10× 11/6)
Surface area = 5(100) +43.33+ 3(18.33)
Surface area = 500) +43.33 + 55
Surface area = 598.33 in²
A boat is heading towards a lighthouse, whose beacon-light is 113 feet above the water. The boat’s crew measures the angle of elevation to the beacon, 11^{\circ} ∘ . What is the ship’s horizontal distance from the lighthouse (and the shore)? Round your answer to the nearest tenth of a foot if necessary.
Answer:
581.3
Step-by-step explanation:
After giving the final exam, the professor found that many of his students failed the test,
so he decided to give a remedial exam. The probability that a student passes the final
exam is 0.6. Given that a student fails the final exam, the probability that the student
passes the remedial exam is 0.8. What is the probability that Jay fails the final exam and
passed the remedial exam?
The probability that Jay fails the final exam and passed the remedial exam is P(fail the final and passed the remedial) = 0.32.
What is probability?
The area of mathematics known as probability deals with numerical descriptions of how likely it is for an event to happen or for a proposition to be true. A number between 0 and 1 is the probability of an event, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes its certainty.
Given:
After giving the final exam, the professor found that many of his students failed the test, so he decided to give a remedial exam.
The probability that a student passes the final exam is 0.6. Given that a student fails the final exam, the probability that the student passes the remedial exam is 0.8.
We are given the following probabilities:
P(passes the final exam) = 0.6
P(fail the final exam = (1 - 0.6) = 0.4
P(passes through the remedial | failed the final) = 0.8
We have to find P(fail the final and passed the remedial).
P(fail the final and passed the remedial) = P(passes the remedial | failed the final)*P(failed the final)
P(fail the final and passed the remedial) = 0.8 x 0.4
P(fail the final and passed the remedial) = 0.32
Hence, the probability that Jay fails the final exam and passed the remedial exam is P(fail the final and passed the remedial) = 0.32.
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The velocity v(t) of a sprinter on a straight track is shown in the graph below. 15 13 11 : 10 Determine the evaluaton of each definite integral Jot v() dt = 26 J4' v() dt = 3 6l v() dt =-10 v(t) dt = 19 You are correct: Your receipt no. is 161-2313 Previous Tries S' (t) =v(t) , then s(t) is the position of the runner at time t. Let s(0) ~2, determine the following values s(4) s(5) s(7) s(9) Submit Answer Incorrect _ Tries 2/8 Previous_ Tries
The position of the sprinter is equal to the value of definite integral of the given velocity function v(t). The position at t = 4, 7, and 9 is 8, 8, 0.
The velocity is the first derivative of the position function. The position function is given in the attached picture.
s'(t) = v(t)
The position at time t is therefore equal to the definite integral from t = 0 to time t.
Since the graph is linear, the evaluation of each definite integral is equal to the area of triangles underneath the lines.
∫₀⁴ v(t) dt = (1/2) x 2 x 6 = 6
∫₄⁷ v(t) dt = (1/2) x 1 x 8 - (1/2) x 2 x 4 = 0.
∫₇⁹ v(t) dt = 2 x (-4) = -8
The position at t = 0 is s(0) = 2
Hence,
s(4) = s(0) + ∫₀⁴ v(t) dt = 2 + 6 = 8
s(7) = s(0) + ∫₀⁴ v(t) dt + ∫₄⁷ v(t) dt = 2 + 6 + 0 = 8
s(9) = s(0) + ∫₀⁴ v(t) dt + ∫₄⁷ v(t) dt + ∫₇⁹ v(t) dt = 2 + 6 + 0 - 8 = 0
The graph in your question was missing. Most likely it was like on the attached picture.
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Illustrative Mathematics
Cool-down: Fundraising for the Animal Shelter
Noah raised $54, which is 60% of his fundraising goal to support the animal shelter.
5
Noah's ambition was $90, and he raised $54 toward that total, or 60% of his fundraising target, in order to benefit the animal sanctuary.
what is equation ?A mathematical equation is a formula that connects two statements using the equal sign (=) to denote equivalence. An algebraic equation is a mathematical statement that establishes the equality of two mathematical expressions. For example, the variables 3x + 5 and 14 are separated by an equal sign in the equation 3x + 5 = 14. Mathematical equations are used to express the connection between two phrases on either side of a letter. There is frequently just one variable, which is also the symbol. example: 2x - 4 = 2.
given
60% x what= $54
Then, by converting 60% to a decimal, we can turn it into a useful number: 0.6. We will substitute x for what because we also need to make "what" simpler to use:
0.6x=54
Get x by itself next, which is referred to as isolating the variable. To accomplish this, divide both sides by 0.6, which is referred to as employing inverse operations.
You must obtain x=90.
Noah's ambition was $90, and he raised $54 toward that total, or 60% of his fundraising target, in order to benefit the animal sanctuary.
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what is[tex]254 ÷ 6[/tex] 254 ÷ 6
The value of expression 254 ÷ 6 is, 42.33.
What is Division method?Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
Given that;
The expression is,
⇒ 254 ÷ 6
Divide the numbers as;
⇒ 254 ÷ 6
⇒ 254 / 6
⇒ 42.33
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Edgar works in the shipping department of a toy manufacturer. Toy cars weigh 6 pounds apiece and are shipped in a container that weighs 5 pounds when empty. Toy trucks, which weigh 3 pounds apiece, are shipped in a container weighing 20 pounds. When packed with toys and ready for shipment, both kinds of containers have the same number of toys and the same weight. What is the number of toys?
The number of toys based on the information will be 5.
How to calculate the number of toys?From the information, Edgar works in the shipping department of a toy manufacturer. Toy cars weigh 6 pounds apiece and are shipped in a container that weighs 5 pounds when empty. Toy trucks, which weigh 3 pounds apiece, are shipped in a container weighing 20 pounds.
This will be Illustrated as:
5 + 6t = 20 + 3t
Collect the like terms
6t - 3t = 20 - 5
3t = 15
Divide.
t = 15 / 3
t = 5
The number of toys is 5.
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The Peters Family ordered one milkshake and two sundaes at the local ice cream shop and spent $14.95. The Morrison Family ordered three milkshakes and four sundress and spent $33.65. find the cost of one milkshake and one sundae.
On solving the provide question, we got to know that volume of cube is and volume of cuboid is , so volume cube is greater.
What is cuboid?We are aware that a rectangle has four corners and is a two-dimensional form. Think of the form as a collection of parallel rectangles. The resultant form is known as a cube. Take a look at the following three-dimensional cube. Height, Width, and Length
The volume of the cube = [tex]a^3[/tex]
Where a is the length of the side = 7cm
volume of cube =
[tex]7*7*7[/tex]We are aware that a rectangle is a two-dimensional shape with four corners. Consider the shape to be a set of parallel rectangles. The resulting shape is referred to as a cube. Look at the following cubic object in three dimensions. Length, Width, and Height
volume of the cuboid = l*b*h =
[tex]7*8*4 = 224 cm^2[/tex]
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The table and the graph each show a different relationship between the same two variables, x and y:
X
3
4
5
6
100
110
190
Y
200
270
360
450
540
How much more would the value of y be in the table, than its value on the graph, when x = 11? (1 point)
800
640
480
320
160
0
246810
The value of y in the table would be greater than the value on the graph, when x = 11 by: B. 110.
What is the point-slope form?Mathematically, the point-slope form of a straight line can be calculated by using this mathematical expression:
y - y₁ = m(x - x₁) or y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)
Where:
m represents the slope.x and y represents the points.For the table, an equation which represent its data points is given by:
y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)
y - 270 = (360 - 270)/(4 - 3)(x - 3)
y = 90(x - 3) + 270
y = 90x - 270 + 270
y = 90x.
When x = 11, the value of y is given by:
y = 90(11)
y = 990.
For the graph, an equation which represent its data points is given by:
y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)
y - 160 = (320 - 160)/(4 - 2)(x - 2)
y = 80(x - 2) + 160
y = 80x - 160 + 160
y = 80x.
When x = 11, the value of y is given by:
y = 80(11)
y = 880
Next, we would determine the difference:
Difference = 990 - 880
Difference = 110.
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A rectangle is dilated by a scale factor of 1/2, centered about the origin.
What should the area of the pre-image be multiplied by to obtain the area of the image rectangle?
2
4
1/4
1/2
30 points
What the area of the pre-image should be multiplied by to obtain the area of the image rectangle is; 4
How to interpret the scale of dilation?The scale factor in the dilation of a mathematical object is one that determines how much larger or smaller the image will be when compared to the original image.
Now, the formula for area of a rectangle is;
A = LW
Where;
L is length
W is width
If the rectangle is dilated by a scale factor of 1/2, then it means that;
New length = ¹/₂L
New Width = ¹/₂W
New Area = ¹/₂L * ¹/₂W
= ¹/₄LW
Thus, to get the pre image are, we have;
Area of pre-image = 4 * Area of new image
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