Answer:
Step-by-step explanation:
Elimination is a method of solving a system of equations by adding or subtracting the equations from each other to eliminate one of the variables.
In this case, we will be using elimination to solve the system of equations:
-3x + 12y = 9
x - 4y = -3
Step 1: Multiply the first equation by -1.
(Multiplying by -1 switches the sign of every number in the equation)
3x - 12y = -9
Step 2: Add the two equations together.
3x - 12y = -9
+x - 4y = -3
______________
4x - 16y = -12
Step 3: Isolate the y-variable by adding 16y to both sides of the equation.
4x - 16y = -12
+16y +16y
______________
4x = -12 + 16y
Step 4: Divide both sides of the equation by 4 to isolate the y-variable.
4x = -12 + 16y
4/4 4/4
______________
x = -3 + 4y
Therefore, the solution to the system of equations is x = -3 + 4y.
Find the set (A n C)'. U= (1, 2, 3, 4, 5, 6, 7, 8) A = (1, 2, 3, 4) C=1,2,3,6,8
1234 in. set A and 1234 in set B and 1234 in set C so the answer is (1234)
The value of the set ( A ∩ C )' = A' ∪ C' = { 4 , 5 , 6 , 7 , 8 }
What is Set Theory Formula?The set formula is given in general as n(A∪B) = n(A) + n(B) - n(A⋂B), where A and B are two sets and n(A∪B) shows the number of elements present in either A or B and n(A⋂B) shows the number of elements present in both A and B.
Given data ,
Let the universal set be represented as U
The value of U = { 1, 2, 3, 4, 5, 6, 7, 8 }
Let the value of set A = { 1 , 2 , 3 , 4 }
Let the value of set C = { 1 , 2 , 3 , 6 , 8 }
Now , the equation of set is ( A ∩ C )'
The value of ( A ∩ C )' = A' ∪ C'
Substituting the values in the equation , we get
A' = U - A
A' = { 1, 2, 3, 4, 5, 6, 7, 8 } - { 1 , 2 , 3 , 4 }
A' = { 5 , 6 , 7 , 8 }
And ,
C' = U - C
C' = { 1, 2, 3, 4, 5, 6, 7, 8 } - { 1 , 2 , 3 , 6 , 8 }
C' = { 4 , 5 , 7 }
So , ( A ∩ C )' = A' ∪ C'
Substituting the values in the equation , we get
( A ∩ C )' = { 4 , 5 , 6 , 7 , 8 }
Hence , the set ( A ∩ C )' is { 4 , 5 , 6 , 7 , 8 }
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Multiply the previous term by 3 and subtract 4 The second term of the sequence is 5. Find the difference between the first and fourth terms of the sequence.
Answer:
72
Step-by-step explanation:
Given that the second term of the sequence is 5, and that we are to multiply the previous term by 3 and subtract 4, we can use that as a recursive formula to find the other terms of the sequence.
The first term of the sequence is:
5*3-4 = 11
The third term of the sequence is:
53-4=11
113-4=29
The fourth term of the sequence is:
53-4=11
113-4=29
29*3-4=83
The difference between the first and fourth terms of the sequence is:
83-11 = 72
So the difference between the first and fourth terms of the sequence is 72.
The actual sum is
0
A i need help for this math please
Answer:
the answer is 0
Step-by-step explanation:
because the question you asked has no digits other than 0
What is the solution to this problem
-9(-×+4u-3)
The solution is 9x - 36u + 27.
What is the linear equation?
The definition of a linear equation is an algebraic equation in which each term has an exponent of one and the graphing of the equation results in a straight line. An example of a linear equation is y=mx + b.
We have given
-9(-×+4u-3)
When you multiply a negative number by another negative number, the result is positive.
So, to solve this problem, we can use the distributive property and simplify:
-9(-x + 4u - 3) = -9(-x) + -9(4u) + -9(-3)
= 9x - 36u + 27
Hence, the solution is 9x - 36u + 27.
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Cyprian was allowed a discount of 11% for goods at sh 800 and a discount of 8.6% for worth 17000.What percentage discount was he allowed altogether
The percentage discount that Cyprian was allowed altogether was 8.21%.
What is the percentage discount?The percentage discount is a portion of the sales price that reduces the amount the purchaser or customer pays for their purchase.
Percentages are ratios of a value or variable compared to another or the whole matter.
We express Percentages as the quotients of the division operations multiplied by 100.
In this situation, the overall percentage discount is worked out step by step as follows:
Discount on goods worth Sh. 800 = 11%
= Sh. 88 (Sh. 800 x 11%)
Discount on goods worth Sh. 17,000 = 8.6%
= Sh. 1,462
The total value of goods = Sh. 17,800 (Sh. 800 + Sh. 17,000)
Percentage discount = 8.21% (Sh. 1,462/Sh. 17,800 x 100)
Thus, overall, the total discount based on the full value of goods Cyprian bought was 8.21%.
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In trapezoid PQRS, PQ is parallel to SR, and diagonal PR is drawn.
SP=SR, SRP=50°, and PRQ=85°
Find the measures of RQP, SPR, and PSR.
Justify your answers.
The measure of ∠RQP is, 45°
The measure of ∠SPR is, 50°
The measure of ∠PSR is, 50°
What is mean by Rectangle?A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.
We have to given that;
In trapezoid PQRS,
PQ is parallel to SR, and diagonal PR is drawn.
And, SP = SR, SRP = 50°, and PRQ = 85°
Here, SP = SR
So, We get;
In Δ PSR; ∠PRS = ∠SPR = 50°
And, PQ is parallel to SR.
Hence, We get;
⇒ ∠SRP = ∠RPQ = 50°
Now, In Δ PQR;
⇒ ∠PRQ + ∠QPR + ∠PQR = 180°
⇒ 85° + 50° + ∠PQR = 180°
⇒ 135° + ∠PQR = 180°
⇒ ∠PQR = 180° - 135°
⇒ ∠PQR = 45°
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Dustin is purchasing a new set of baseball
cleats for $48.30 and a new pair of
baseball gloves for $17.75. If he must also
pay a 6% sales tax, what will be the total
cost of his purchase?
well, the subtotal cost will be 48.30 + 17.75 = 66.05, now let's add the tax to that
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{6\% of 66.05}}{\left( \cfrac{6}{100} \right)66.05} ~~ \approx ~~ 3.96~\hfill \underset{total~cost}{\stackrel{66.05~~ + ~~3.96}{\approx \text{\LARGE 70.01}}}[/tex]
The total cost of the purchase is $70.013.
What is a percentage?The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
Set of baseball cleats = $48.30
Baseball gloves = $17.75.
Sales tax = 6%.
This means,
6% of (48.30 + 17.75)
= 6/100 x 66.05
= $3.963
Now,
Total cost.
= 48.30 + 17.75 + 3.963
= $70.013
Thus,
The total cost is $70.013.
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She drove a total distance of 86,028.8 yd on a race track. He drove 13 laps where each lap was the same lefty. what was the length to if each lap? Write your answer in miles.
each of the lap is of length 6617.6 miles.
What are Distance and velocity?
a velocity is a unit of measurement for the Distance an object travels in a
the predetermined period of time. Here is a word equation that illustrates the
connection between space, speed, and time: velocity is calculated by
dividing the total Distance traveled by the journey time.
Diane and Douglas both drive at an average rate of 50 miles per hour. So if they travel for the same time they will end up covering the same distance as well.
As we know velocity = rate of change of displacement or
She drove a total distance of 86,028.8 yd on a race track.
He drove 13 laps where each lap was the same lefty.
each lap is 86028.8/13 = 6617.6
Hence each of the lap is of length 6617.6 miles.
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Ajay needed to get his computer fixed. He took it to the repair store. The technician at
the store worked on the computer for 3.25 hours and charged him $78 for parts. The
total was $484.25. Which equation or tape diagram could be used to represent the
context if a represents the cost of labor per hour?
The equation that could be used to represent the context if a represents the cost of labor per hour is a = 481/3.25.
What is an equation?An equation is written in the form of variables and constants separated by the operation of multiplication and division,
An equation states that terms in different forms on both sides of the equality sign are equal.
Multiplication and division do not separate the terms of an equation.
Given, The technician at the store worked on the computer for 3.25 hours and charged him $78 for parts and the total was $484.25.
Therefore, The equation representing the context is,
3.25a + 78 = 484.25.
3.25a = 484.25 - 3.25.
3.25a = 481.
a = 481/3.25.
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Answer: 125
Step-by-step explanation:
As of 2018, the population of Turks and Caicos is 37,910 people. The Locust Grove football field is 120
yd. x 54 yd. If each person takes up 2 square feet, can the entire population of Turks and Caicos fit on
our football field?
Answer:
Step-by-step explanation:
No, the entire population of Turks and Caicos would not be able to fit on the football field. The total area of the football field is 6,480 square yards, which is equivalent to 13,728 square feet. Since each person takes up 2 square feet, this means that only 6,864 people could fit on the field. Therefore, the population of Turks and Caicos is more than double the amount of people that could fit on the football field.
100 POINTS PLEASE HELP THERE IS A PIC JUST PLEASE CLICK ON IT PLEASEEEE
Answer:
2.48 x 10⁻² or 2.48 x 10^-2
Step-by-step explanation:
Alr, so 1.24 x 3.6/1.8 = 1.24 x 2 = 2.48
10² x 10⁻³ x 10⁻¹ = 10⁻²
Therefore, your answer is, 2.48 x 10⁻² or 2.48 x 10^-2.
Cheers!
4 hundreds is 10 times as much as 4 thousandths
No, 4 hundreds is not 10 times as much as 4 thousandths.
How to compare 4 hundreds and 4 thousandths?Numbers in the tens are numbers that are multiples of 10, such as 10, 20, 30, 40, etc.
4 hundreds is equal to 4 × 100 = 400.
4 thousandths is equal 4/1000 = 0.004
To compare their magnitudes, we can divide 0.4 by 0.004:
400 ÷ 0.004 = 100000
So 4 hundreds (400) is significantly larger than 4 thousandths (0.004).
Therefore, 4 hundreds is 100000 times as much as 4 thousandths.
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Prepare a pie chart on women literacy rate since five years in Kerala
Women literacy rate since five years in Kerala is as follows:
2018 = 65.8%
2019 = 70.30%
2020 = 84.4%
2021 = 92.1%
2022 = 95.2%
What is literacy rate?The proportion of people in a given age group who are reading and writing proficiently is known as the literacy rate. A person must be at least 15 years old to be considered an adult, 15 to 24 years old to be considered a young person, and 65 years old or older to be considered an elder. The ability to understand a brief, simple statement about daily life is typically used to measure it.
Most of the time, literacy includes numeracy as well, and measurements sometimes include a quick evaluation of arithmetic proficiency. It is important to distinguish between the literacy rate and the total number of literates and functional literacy, a more thorough assessment of literacy conducted over time and allowing for the determination of multiple proficiency levels.
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Please help
Justin used similar triangles to find
the height of a flag pole. When he
stood 7 feet from a mirror laying on
the ground, he could see the top of
the pole in the mirror.
What is the
height
of the
flag pole?
Answer:
flagpole is sqrt(7h)
Step-by-step explanation:
We can use similar triangles to find the height of the flagpole.
Since Justin can see the top of the pole in the mirror, we can assume that the mirror and the ground form a right angle and the flagpole, mirror and Justin form a right triangle.
We can use the concept of similar triangles to find the height of the flagpole.
Let h be the height of the flagpole.
We can set up a proportion:
(7+h)/h = h/(7)
Cross-multiply and solve for h:
7h + h^2 = 7h
h^2 = 7*h - 7h
h^2 = 7h
h = sqrt(7h)
So the height of the flagpole is sqrt(7h)
It is worth noting that this answer is a square root of a variable and not a numerical value, thus we can't find an exact value of the height of the flagpole.
Write and solve an equation.
Mark weighs 75 pounds. Together, he and his sister weigh 10 pounds more than two times the weight of his sister. What is the weight, w, of Mark’s sister
Answer:
Mark’s sister weights 65 pounds---------------------------------------
Mark's weight is 75 pounds ad his sister's weight is w.
Together, he and his sister weigh 10 pounds more than two times the weight of his sister,
Set up equation:
75 + w = 10 + 2wSolve it for w:
75 + w = 10 + 2w2w - w = 75 - 10w = 65what is the solution to -82-3(2x+4)=2(7x+1)-3(2x+4)
Answer:
according to BODMAS RULE
first step is to open the bracket , and solve
-82 - 6x - 12= 14x + 2 -6x -12
-82=14x + 2
-84 = 14x
x= -6
work out for brainliest
The expression for the perimeter of the right triangle with hypotenuse 2p + 8 and base p - 5 is: perimeter = (p - 5) + sqrt((2p + 8)^2 - (p - 5)^2) + (2p + 8)
What is triangle ?
Triangle can be defined in which it consists of three sides, three angles and sum of three angles is always 180 degrees.
In a right triangle, the hypotenuse (the longest side) is opposite the right angle, and the other two sides are called the legs. In this case, the hypotenuse is 2p + 8 and one of the legs (the base) is p - 5.
To find the third side (the other leg), we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the legs. In other words:
(hypotenuse)^2 = (leg 1)^2 + (leg 2)^2
Substituting the given values, we get:
(2p + 8)^2 = (p - 5)^2 + (leg 2)^2
Simplifying and solving for leg 2, we get:
leg 2 = sqrt((2p + 8)^2 - (p - 5)^2)
Now we can use the perimeter formula, which is the sum of the lengths of all the sides of the triangle. In this case, the perimeter of the triangle is:
perimeter = (leg 1) + (leg 2) + (hypotenuse)
Substituting the given values and the expression we found for leg 2, we get:
perimeter = (p - 5) + sqrt((2p + 8)^2 - (p - 5)^2) + (2p + 8)
Therefore, the expression for the perimeter of the right triangle with hypotenuse 2p + 8 and base p - 5 is: perimeter = (p - 5) + sqrt((2p + 8)^2 - (p - 5)^2) + (2p + 8)
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Please help to solve this
Hope it helps.
If you have any query, feel free to ask.
what is the solution to this equation?
[tex](\frac{1}{4})x^+{1}=32[/tex]
[tex]\cfrac{1}{4}x+1=32\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{4}}{4\left( \cfrac{1}{4}x+1 \right)=4(32)}\implies x+4=128\implies x=124[/tex]
If a1 = 5 and An = - 3an-1 -4 then find the value of a6.
By using the recursive formula, we will see that the sixth term of the sequence is:
A₆ = -1,459
How to find the sixth term of the sequence?
Here we have a sequence where the recursive formula is:
Aₙ = -3Aₙ₋₁ - 4
Where the initial term of the sequence is A₁ = 5
Now we want to find A₆, to do it, we need to find all the previous terms, we will get:
A₂ = -3*A₁ - 4
= -3*5 - 4 = -19
A₃ = -3*A₂ - 4
= -3*-19 - 4
= 53
A₄ = -3*A₃ - 4
= -3*53 - 4
= -163
A₅ = -3*A₄ - 4
= -3*-163 - 4
= 485
A₆ = -3*A₅ - 4
= -3*485 - 4
= -1,459
The value of the sixth term is -1,459.
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identify the vertex of the parabola
I WILL MARK BRAINLIEST
Answer:(1,0) which is the second one in the picture
Step-by-step explanation:The vertex is in (1,0).
The function is defined below. (Will give brainliest.)
H(x)= x+2/x^2+4x+4
Find all values of that are NOT in the domain of H.
If there is more than one value, separate them with commas.
The value of x that is not in the domain of the function is given as follows:
x = -2.
What is the domain of a function?The domain of a function is the set that contains all the possible input values for the function.
The function in this problem is defined as follows:
H(x) = (x + 2)/(x² + 4x + 4).
The function is a fractional function, meaning that the denominator cannot assume a value of zero.
Hence the values of x that are not in the domain of the function are obtained as follows:
x² + 4x + 4 = 0
(x + 2)² = 0
x + 2 = 0
x = -2.
Hence the value of x = -2 does not belong to the domain of the function H(x), as it would make the denominator assume a value of zero.
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This question has two parts. Be sure to answer
both parts of the question.
This diagram shows four small squares
and one rectangle composed of 10 small
squares.
PART A
Andre says that this diagram can represent
140.
Do you agree with Andre? Explain why or
why not.
Enter your response here
PART B
Diego says that this diagram can represent
410.
Do you agree with Diego? Explain why or
why not.
Enter your response here
The solution is
a) The diagram can represent the equation A = 10 ( 4 ) + 10 ( 10 ) = 140 and Andre's explanation is True
b) The diagram cannot represent 410 and Diego's explanation is False
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
The number of small squares = 4 squares
The number of squares in the rectangle = 10 squares
So , the total number of squares = 10 + 4 = 14 squares
Now , the equation will be
a)
Andre's explanation says that diagram can represent 140
So , when A = 140
The total number of squares = 14
when one square = 10 ,
On simplifying the equation , we get
A = 10 ( 10 ) + 4 ( 10 )
The value of A = 100 + 40 = 140
So , each square can have a value of 10
And , Andre's explanation is True
b)
Diego's explanations says that diagram can represent 410
So , when A = 140
The total number of squares = 14
when one square = 10 ,
The value of A = 410 / 14
On simplifying the equation , we get
A = 29.28571..
So , each square cannot have an equal value
And , Diego's explanation is False
Hence , the equations are solved
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To which set does the number
11 belong. Choose the most descriptive answer.
O rational
O irrational
O whole
O natural
Answer:
Step-by-step explanation:
The number 11 belongs to the set of natural numbers. Natural numbers are the set of all positive whole numbers, including 0, and the number 11 is a positive whole number.
Does anyonw know how to solve:
cos2a=4/5?
The value of a is 18.43°
What are trigonometric ratios?The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).
Given that, cos2a=4/5
cos 2a = 4/5
2a = cos⁻¹(4/5)
2a = 36.86°
a = 18.43°
Hence, the value of a is 18.43°
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PLEASE HELP ME ASAP IREADY
1. Estimate the area of the irregular shape. Explain your method and show your work.
Check the picture below.
so each row has a few gaps, but also has a few surplusses, so we can use the surplusses to fill up the gaps, and that will give us more or less 3 + 5 + 4 + 4 units, namekly 16 units.
Mr.Heritage invests $6000 total into two diffent bank accounts. One account pays 8% interest annually. The second par 10% interest antally. If he earns $560 in interest after one year, how much did he put in each account?
The amount invested in the two different bank accounts which has a simple interest of $ 560 is $ 2000 and $ 4000 respectively
What is Simple Interest?Simple interest is a method of calculating interest that ignores the impact of compounding. While interest frequently compounds throughout the course of a loan's set periods, simple interest does not. Simple interest is calculated by multiplying the principal amount by the interest rate, times the number of periods.
Simple Interest = ( Principal Amount x Rate x Time Period ) / 100
Given data ,
Let the simple interest be represented as SI
The value of SI = $ 560
Now , the total amount A = $ 6000
Let the first bank account be A
Let the second bank account be B
The amount invested in the bank account A be = P
The amount invested in the bank account B be = ( 6000 - P )
The rate of interest of bank account A = 8 %
The rate of interest of bank account B = 10 %
Now ,
The SI of bank account A = ( Principal Amount x Rate x Time Period ) / 100
Substituting the values in the equation , we get
The SI of bank account A = ( P x 8 x 1 ) / 100
The SI of bank account A = 8P/100
And ,
The SI of bank account A = ( Principal Amount x Rate x Time Period ) / 100
Substituting the values in the equation , we get
The SI of bank account A = [ ( 6000 - P ) x 10 x 1 ] / 100
The SI of bank account A = ( 60000 - 10P ) /100
And , the total SI = $ 560
So ,
8P/100 + ( 60000 - 10P ) /100 = 560
Multiply by 100 on both sides of the equation , we get
8P + 60000 - 10P = 56000
On simplifying the equation , we get
-2P = -4000
Divide by -2 on both sides of the equation , we get
P = $ 4000
So , the amount invested in bank account A = $ 4000
And , the amount invested in bank account B = $ 2000
Hence , the amount invested is $ 4000 and $ 2000 respectively
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In ΔXYZ, x = 89 cm, z = 84 cm and ∠Z=70°. Find all possible values of ∠X, to the nearest degree.
The value of angle X Is 85° ( nearest degree)
What is sine rule?The sine rule states that if a, b and c are the lengths of the sides of a triangle, and A, B and C are the angles in the triangle; with A opposite a, etc., then a/sinA=b/sinB=c/sinC.
the law of sines is used to solve the triangle, when we know two angles and one side or two angles and one included side. It means that the law of sines can be used when we have ASA (Angle-Side-Angle) or AAS (Angle-Angle-Side) criteria.
therefore x/sin X = z/sinZ
89/sinX = 84/sin 70
89sin70 = 84sin X
= 89× 0.94 = 84sinX
=83.66 = 84sin X
sin X = 83.66/84
sinX = 0.996
X = sin^-1 0.996
X = 85° ( nearest degree)
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3) You inherit $2,500 and decide to invest it in an account that earns 1.5% interest
compounded monthly.
a) Write an equation to model this scenario.
b) How much money is in the account 15 years after you first invested?
Therefore , the solution of the given problem of interest comes out to be
A = $3,130.37 is the amount after 15 years.
What exactly is meant by interest?Simple interest is calculated by dividing the principal by the borrowing cost, the remaining time, and other elements. The simple return formula in marketing is principal + interest plus hours. Utilizing this method is the simplest way to calculate interest. As a percentage of the principle sum is the most frequent way to calculate income. For instance, he will only pay his portion of the 100% cost if he borrows $100 from a friend and agrees to pay the loan back with 5% interest.. You have to pay interest on money you borrow, and you have to charge interest on money you lend.
Here,
Given :
a ) the equation that can be formed is
2500x - 1.5y = 30
b)
Using compound formula :
=> Then solve the equation for A
A = P(1 + r/n)nt
A = 2,500.00(1 + 0.015/12)(12)(15)
A = 2,500.00(1 + 0.00125)(180)
A = $3,130.37
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