Answer:
15
Step-by-step explanation:
since the graph is proportional we can divide 30 by 2 we get 15
to double check we will divide 60 by 4 and we also get 15
so 15 pies are produced every hour
components a, b, c, and d function properly with probabilities 0.6, 0.7, 0.8, and 0.9 respectively. calculate the reliability of the system show in the figure. assume the components are independent
(a) The reliability of this system is 0.42
(b) The reliability of this system is 0.8376
As per the given data that the probabilities that components A, B, C, and D function properly are 0.6, 0.7, 0.8, and 0.9 respectively.
Let the name of the components itself denote the event that the corresponding component works properly.
So P(A) = 0.6, P(B) = 0.7, P(C) = 0.8, P(D) = 0.9.
We have to find the reliability of the given structure of the combination of the above-said components.
The diagrammatic representation(attached at the end of solution(a)) of the system is as follows.
The above system consists of components A and B connected in the sequel. So the reliability of the system is the probability that both A and B function properly.
This probability is given by P(A ∩ B) = P(A)P(B) as the events are independent. Substitute the probabilities in the above formula.
P(A ∩ B) = (0.6)(0.7)
P(A ∩ B) = 0.42
The diagrammatic representation(attached at the end of solution(b)) of the system is as follows.
In the above system, the components A and B and components C and D are connected the in the sequel. The entire system is connected in parallel with A, B and C, D. The reliability of this system is given by the probability.
P(A ∩ B) ∪ P(C ∩ D) = P(A ∩ B) + P(C ∩ D) - P(A ∩ B) ∩ P(C ∩ D)
= P(A)P(B) + P(C)P(D) - P(A)P(B)P(C)P(D)
= (0.6)(0.7) + (0.8)(0.9) - (0.6)(0.7)(0.8)(0.9)
= 0.42 + 0.72 - 0.3024
= 1.14 - 0.3024
= 0.8376
Therefore answer is 0.8376
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Marcia and Tamara are running a race.
Marcia has run 4 kilometers.
Tamara has completed half of the race and is 2 kilometers ahead of Marcia.
Write an equation that represents the relationship between the distances each girl has run.
Let k represent the total length of the race in kilometers.
The equation that represents the relationship between the distance of Tamara and Marcia is y = x-4
What is linear expression?A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power. In other words, none of the exponents can be greater than 1.
let x represent the kilometers covered by Tamara and y by the kilometers covered by Marcia.
x+y = k
x = k/2
x = Y+2
Y+2 = K/2
2Y+4 = K
x+ y = 2y+4
collect like terms
2y -y = x-4
y = x-4
therefore the linear equation they represents the relationship between the distances each girl has run is y = x-4
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The sum of three consecutive even integers is -78. What are the integers? Describe how you would use the strategy of writing an equation to solve the given problem
Then the 3 integer even numbers are:
-24, -22, -20
How to find the 3 integers?We know that the sum of 3 consecutive even numbers is -78, that can be written as:
x + (x + 2) + (x + 4) = -78
Now we can solve that equation for x:
3x + 6 = -78
3x = -78 - 6 = -72
x = -72/3 = -24
The next even integer is:
-24 + 2 = -22
-24 + 4 = -20
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The three consecutive integer even numbers are -24, -22, -20
How to determine the three integersFrom the question, we have the following parameters that can be used in our computation:
The sum of three consecutive even integers is -78
Represent the smallest integer with x
So, we haee the following equation:
x + (x + 2) + (x + 4) = -78
Evaluate the like terms
3x + 6 = -78
So, we have
3x = -72
Divide both sides by 3
x = -72/3 = -24
This means that the next integers are
-24 + 2 = -22
-24 + 4 = -20
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write (-2,-3) (4,-7) in standard form
Standard form of the line passing through the points (-2, -3) and (4, -7) is,
⇒ y = - 2/3x - 13/3
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
Two points on the line are (-2, -3) and (4, -7).
Now,
Since, The equation of line passes through the points (-2, -3) and (4, -7).
So, We need to find the slope of the line.
Hence, Slope of the line is,
m = (y₂ - y₁) / (x₂ - x₁)
m = (- 7 - (-3)) / (4 - (-2))
m = - 4 / 6
m = - 2/3
Thus, The equation of line with slope - 2/3 is,
⇒ y - (-3) = - 2/3 (x - (-2))
⇒ y + 3 = - 2/3 (x + 2)
⇒ y + 3 = - 2/3x - 4/3
⇒ y = - 2/3x - 4/3 - 3
⇒ y = - 2/3x - 13/3
Therefore, The equation of line passes through the points (-2, -3) and
(4, -7) will be;
⇒ y = - 2/3x - 13/3
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Gameron wants to measure a poster frame, but he only has a sheet of
paper that is 8 1/2 by 11 inches
a.
He lays the long edge of the paper along the long edge of the frame several times
and finds the frame is 4 papers long. How long is this in inches?
In feet?
b.
He lays the short edge of the paper along the short edge of the frame several times
and finds the frame is 3 papers wide. How long is this in inches?
In feet?
plsss help!
The measure of the frame in feet of the length and width are 3.667 feet and 2.125 feet respectively.
What is the unitary method?The unitary method is a method in which you find the value of a unit and then the value of a required number of units.
Given here: The measure of the frame is 8.5 inches and 11 inches
a) if the frame is 4 papers long then we have the length of the frame as
11×4=44 inches (since he lays the paper along the edge of frame)
We know 1 inch= 0.0833 foot
Thus 44 inches= 3.66667 foot
b) Again if he lays the paper along the short edge than the width of the frame is 3×8.5=25.5 inches
∴25.5 inches= 2.125 feet
Hence, The measure of the frame in feet of the length and width are 3.667 feet and 2.125 feet respectively.
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Let X_0,X_1,X_2,... be independent identically distributed nonnegative random variables having a continuous distribution. Let N be the first index k for which X_k > X_0. That is, N = 1 if X_1 > X_0, N = 2 if X_1 < X_0 and X_2 > X_0. etc. Determine the probability mass function for N and the mean E[N]. (Interpretation: X_0, X_1,.... are successive offers or bids on a car that you are trying to sell. Then, N is the index of the first bid that is better than the initial bid.)
The probability mass function (PMF) of N can be determined by finding the probability that N = k, for each k = 1, 2, 3, ....
Let p_k = P(N = k) be the probability that the first bid that is better than the initial bid X_0 is the kth bid. We can calculate p_k as follows:
p_k = P(X_k > X_0, X_1 < X_0, X_2 < X_0, ..., X_{k-1} < X_0) = P(X_k > X_0 | X_1 < X_0, X_2 < X_0, ..., X_{k-1} < X_0) * P(X_1 < X_0, X_2 < X_0, ..., X_{k-1} < X_0)
Since X_0, X_1, ... are independent and identically distributed, we have:
p_k = P(X_k > X_0) * (P(X_1 < X_0))^{k-1}
To find the mean E[N], we need to calculate the expected value of N. The expected value of N is given by:
E[N] = 1 * p_1 + 2 * p_2 + 3 * p_3 + ... = ∑_{k=1}^∞ k * p_k
Since p_k = P(X_k > X_0) * (P(X_1 < X_0))^{k-1}, we can write E[N] as:
E[N] = ∑_{k=1}^∞ k * P(X_k > X_0) * (P(X_1 < X_0))^{k-1}
To find E[N], we need to know the distribution of X_0, X_1, .... Unfortunately, without further information on the distribution of X_0, X_1, ..., it is not possible to determine the PMF of N or the mean E[N].
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If f(x) is a linear function, f(-2)=3, and f(4)=5, find an equation for f(x)
The equation of the function is f(x) = 4x + 11
How to determine the equation of the functionFrom the question, we have the following parameters that can be used in our computation:
f(-2)=3, and f(4)=5
A linear function is represented as
y = mx + c
So, we have
-2m + c = 3
4m + c = 5
When solved, we have
2m = 8
This gives
m = 4
So, we have
c = 3 + 2m
c = 3 + 8 = 11
So, the function is
f(x) = 4x + 11
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Answer the question that follows based on the graph to the right 
1) The independent variable is ''Day'' shown in x - axis.
2) Days shows on x - axis are incorrectly arranged.
What is Coordinates?A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.
We have to given that;
The graph is shown in graph.
On the graph;
Day is shown in x - axis.
And, Earnings shown in y - axis.
Now, We know that;
The independent variable is shown in x - axis.
Hence, The independent variable is Day.
And, One wrong thing in graph is,
Days shows on x - axis are incorrectly arranged.
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plit a convex octagon given by the list of vertices v1, v2, v3, v4, v5, v6, v7, v8 into a set of triangles and give the vertices that make up each triangle.
A convex octagon can be split into a set of triangles by connecting its vertices in a way that each vertex is connected to its neighboring vertices.
There are several ways to split a convex octagon into triangles, but a common approach is to use the ear clipping algorithm, which involves finding triangles that have their vertices on the octagon's perimeter and have no other vertices inside the triangle.
For example, if the vertices of the octagon are given by v1, v2, v3, v4, v5, v6, v7, and v8, then we can split the octagon into the following triangles:
(v1, v2, v3), (v3, v4, v5), (v5, v6, v7), (v7, v8, v1), (v2, v3, v5), (v4, v5, v7),
(v6, v7, v1), and (v8, v1, v3).
Each of these triangles has three vertices that are connected to form a closed polygon, and together they form the entire convex octagon. By splitting the octagon into smaller triangles, it is easier to perform computations, such as finding the area or the normal vectors of the octagon's surface.
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The value of an electronic music device decreases by 11% each year. The device was purchased for $125. What will its value be after 8 years?
The cost of an electronic music device after 8 years is, $59.83
What is Simple interest?A quick and easy method of calculating the interest charge on a loan is called a Simple interest.
We have to given that;
The value of an electronic music device decreases by 11% each year.
And, The device was purchased for $125.
We know that;
The formula as the value of the machine depreciates every year by 11%,
⇒ A = P (1 - r)ⁿ
Here, P = $125
r = 11% = 0.11
n = 8 years
Substitute all the values, we get;
⇒ A = P (1 - r)ⁿ
⇒ A = 125 (1 - 0.11)⁸
⇒ A = 125 (0.89)⁸
⇒ A = 125 × 0.3936
⇒ A = $59.83
Thus, The cost of an electronic music device after 8 years is, $59.83
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10-2 is Choose... times as great as 10-4.
Number 10⁻² is 100 times as great as 10⁻⁴.
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;
Numbers are 10⁻² and 10⁻⁴.
Let number 10⁻² is x times great as 10⁻⁴.
Hence, We can formulate;
⇒ 10⁻² = x × 10⁻⁴
⇒ x = 10⁻² / 10⁻⁴
⇒ x = 10⁻²⁺⁴
⇒ x = 10²
⇒ x = 100
Thus, Number 10⁻² is 100 times as great as 10⁻⁴.
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pls help asap nowww
The expression ⅘ x 50 represents the multiplication of a fraction and a whole number, and the answer is 40.
The expression "⅘ x 50" is a mathematical equation that represents a multiplication operation. The symbol "x" represents the multiplication operator. In this expression, the first number, ⅘, represents a fraction, while the second number, 50, represents a whole number.
When solving the expression, we first simplify the fraction ⅘ by dividing the numerator (4) by the denominator (5). This results in a decimal value of 0.8. Then, we multiply the decimal by 50 to obtain the final answer. 0.8 x 50 = 40.
So, the expression "⅘ x 50" equals to 40. This means that if we have 4 out of 5 equal parts of a whole, and the whole is equal to 50 units, then each part is equal to 40 units
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Josiah has 147 toy cars. If he organizes them in a group of 9, how many cars will be in the final group?
g(x)=x^2+6x+8 is it a minimum or maximum value?
where does the minimum or maximum value occur?
X=
What is the functions minimum or maximum value?
Answer:To determine if the function is a minimum or maximum value, we need to find its second derivative and see if it is positive or negative. If the second derivative is positive, the function is a minimum value, if it's negative, the function is a maximum value.
The second derivative of the given function is a constant (2), which means it is always positive. Therefore, the function g(x)=x^2+6x+8 is a minimum value.
The minimum value occurs at the vertex of the parabolic shape of the function, which can be found using the formula: x = -b / 2a, where a, b, and c are the coefficients of the function g(x) = ax^2 + bx + c. Plugging in the values, we get x = -6 / 2 * 1 = -3.
The minimum value of the function can be found by substituting the x value back into the function: g(-3) = (-3)^2 + 6(-3) + 8 = 9.
So the minimum value of the function g(x) = x^2 + 6x + 8 is 9, and it occurs at x = -3.
Step-by-step explanation:
Answer:
The function doesn't have maximum value, as it is always increasing, although it has minimum value which is -b/2a, in this case -3 is a minimum value
Pizza is available with three kinds of cheese and four toppings. How many different ways can you order your pizza with one kind of cheese and two toppings?
Answer:
Therefore you will be able to get 6 * 3 different pizzas = 18 pizza combinations.
Answer: 12
Step-by-step explanation:
At this rate, how long will it take to sell 200 cups of coffee? Show your work.
need a math genius...
Answer:
Second option:
[tex]\boxed{ \$6,671.67}[/tex]
Step-by-step explanation:
The equation for the amount accrued at 5.4% interest compounded semi-annually(twice a year) for an initial investment P for t years is already given:
[tex]A = P\left(1 + \dfrac{0.054}{2}\right)^{2t}[/tex]
Plug in
P = $3000
t = 15 years
[tex]A = 3000\left(1 + 0.054\right)^{2\cdot 15}\\\\A = 3000(1 + 0.027)^{30}\\\\A = 3000(1.027)^{30}\\\\A = 3000 (2.22389)\\\\A = \$6,671.67[/tex]
This is the second option
HELP NOW PLS!! 100PTS!
Marcus loves baseball and wants to create a home plate for his house. Marcus needs to calculate the area of the home plate at the ball field so he can reconstruct it when he gets home. Calculate the area of the polygon.
30 in2
31.5 in2
36.5 in2
39 in2
Answer: 39 in^2
Step-by-step explanation: To find the area of this polygon, we can break it down into two triangles and one rectangle. The following formulas are to solve for the area of each polygon:
Area of a Triangle: A = b x h / 2
Area of a Rectangle: A = l x w
We can plug in the values by what we are given. The triangle to the top has a base of 6 in and a height of 5 in. We can multiply these to get 30 in but cut it in half to get 15 in. The second triangle has a base of 3 in and a height of 4 in, so when we multiply, we get 12 in / 2 to get 6 in. The rectangle's length is 6 in and the width is 3 in. So, 6 x 3 is 18. Add all these values together, and you get 39 in^2.
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which fraction is in simplest form 2/10 5/12 3/6 4/8
The fraction in simplest form is, 5/12.
What is mean by Fraction?A fraction is a part of whole number, and a way to split up a number into equal parts. Or, A number which is expressed as a quotient is called fraction. It can be written as the form of p : q, which is equivalent to p / q.
We have to given that;
All the fractions are,
⇒ 2/10, 5/12, 3/6, 4/8
Now, We know that;
The fraction is in simplest form if the GCD of denominator and numerator is 1.
So, By all the fractions;
⇒ 5/12
Clearly, GCD of 5 and 12 are 1.
Hence, The fraction in simplest form is, 5/12.
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(50 POINTS AND BRAINLYEST)
. Given the image of the circle, identify the length of the radius, diameter, and circumference. Also, find the area. Make
sure to show work (area and circumference) to receive credit. Choose a number for the diameter. (4 total points)
The length of the radius, diameter, and circumference are 78.5 and 31.4.
What is the area and circumference of a circle?Supposing that a considered circle has its radius of 'r' units.
Then, its area and circumference is given as:
[tex]Area = \pi r^2 \: \rm unit^2 Circumference = 2\pi r \: \rm units[/tex]
Radius of a circle is half of its diameter.
Given;
Let the diameter be 10cm
Radius=d/2
=10/2=5
Diameter=10
Circumference=2pi*r
=2*3.14*5=31.4
Area= pi*r^2*
=3.14*5*5=78.5
Therefore, the area and circumference will be 78.5 and 31.4.
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out the missing marginal costs and benefits in the table. (see question marks) unit total cost marginal cost total benefit marginal benefit 1 100 100 120 120 2 125 ? 150 ? 3 140 ? 175 ? 4 160 ? 190 ?
The missing marginal costs and benefits values are the following
For row 2 : Marginal cost = $25Marginal benefit = $ 30
For row 3 : Marginal cost = $15Marginal benefit = $25
For row 4 : Marginal cost = $20Marginal benefit = $15See above we have a table with columns total cost, marginal cost , total benefits and marginal benefits. We have to determine the values in place of question mark (?) . Marginal benefit and marginal cost are two measures of how the price or value of a product changes.
The marginal benefit is determined by dividing the change in total benefit received by the change in the number of units consumed.Marginal Cost = Change in Total Cost / Change in consumed unitsNow, Marginal cost and benefits for row 2
change in total cost = 125- 100 = 25
change in units = 2 - 1 = 1
So, marginal cost = 25/1 = $25
Marginal benefit = change in total benefits/ change in units
= (150 - 120)/2-1 = 30/1 = $ 30
Marginal cost and benefits for row 3:Change in total cost = 140 - 125 = 15
Change in units = 3 - 2 = 1
Change in total benefit = 175 - 150 = 25
So, marginal cost = 15/1 = $15
Marginal benefit = 25/1 = $25
Marginal cost and benefits for row 4:Change in total cost = 160 - 140 = 20
Change in units = 4 - 3 = 1
Change in total benefit = 190 - 175= 15
So, marginal cost = 20/1 = $20
Marginal benefit = 15/1 = $15
Hence, we get all the values of question mark.
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Complete question:
Find Out the missing marginal costs and benefits in the above table. (see question marks) unit total cost marginal cost total benefit marginal benefit 1 100 100 120 120 2 125 ? 150 ? 3 140 ? 175 ? 4 160 ? 190 ?
1.06 Quiz: Solve Linear Equations with Addition and Subtraction Solve for p. 21+p=44 Enter your answer in the box. p=
Answer:
Step-by-step explanation:
Evaluate the piecewise function
The solution of the composite function fog(x) = 3x + 3 at x > 2.
What is composite function?Let the two function f(x) and g(x) generate a new function h(x) using an operation.
The operation is composition of functions and h(x) is a composite function.
We have three piecewise function.
First we have to show that,
the composite function,
fog(x) at x > 2.
For that,
g(x) at x > 2 is,
g(x) = 3x.
Now, f(g(x)),
= f(3x)
= 3x + 3 at x > 2.
Therefore, the function is fog(x) = 3x + 3.
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The complete question:
Find the fog(x) at x > 2
My bill at the hair salon came up to 110$ if I tip my stylist 20% what will my total bill be
Answer:
Step-by-step explanation:
110 x 0.20 = 22
your total is 132
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The vehicle in motion produces 44000 joules of kinetic energy.
What is kinetic energy?Kinetic energy is a type of power that a moving object or particle possesses.
An item accumulates kinetic energy doing work, which involves the transfer of energy, is done on it by exerting a net force.
Given, The formula for kinetic energy is, K = (1/2)mv².
The vehicle has a mass of 2200 kilograms and a velocity of 20 m/s.
So, Replacing the values in the formula will yield the result.
K = (1/2)mv².
K = 1100×400.
K = (1/2)×2200×(20)².
K = 44000 joules.
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Suppose we know lim f(x) = 2. Which of the following statements must be true? To Check all that are true. DA. f(x) has a vertical asymptote at * = 2 B. lim f(x) = 2 C. lim f(x) = -2 D. f(x) has a horizontal asymptote at y = 2 E. f(x) is continuous at I = QO F. f(x) is never equal to 2 G. As x gets very large, f(2) gets close to 2 2 -00
The limit of f(x) is 2, which means that as x approaches infinity, f(x) approaches 2. This implies that f(x) has a vertical asymptote at x = 2, but does not have a horizontal asymptote at y = 2, and is never equal to 2.
The limit of a function is the value that the function approaches as the argument approaches infinity. In the case of f(x), the limit is 2. This means that as x gets larger and larger, the value of f(x) gets closer and closer to 2. This implies that f(x) has a vertical asymptote at x = 2, meaning that the function approaches this value, but never reaches it. It does not have a horizontal asymptote at y = 2, meaning that the function does not approach this value as x gets larger. Additionally, the limit of f(x) is not -2, meaning that the function does not approach this value as x gets larger. Lastly, f(x) is continuous at x = 0, meaning that there is no discontinuity at this point in the graph.
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A bike tire just ran over a nail, and it is losing pressure at a rate of 10% every minute. The tire pressure is currently 1,060 kilopascals. What will it be in 4 minutes?
Answer:
699.626 kilopascals after 4 minutes
Step-by-step explanation:
We can use the formula for simple interest to calculate the tire pressure after 4 minutes. Let's call the initial pressure "P", the rate of loss "r", and the time elapsed "t".
P = P * (1 - r)^t
Where r is the rate of loss in decimal form and t is the number of minutes elapsed.
Substituting the given values, we have:
P = 1,060 * (1 - 0.10)^4
P = 1,060 * (0.9)^4
P = 1,060 * 0.6561
P = 699.626 kPa
Therefore, the tire pressure will be 699.626 kilopascals after 4 minutes.
A Girl Scout is selling cookies to raise money for her troop. She is given a certain number of cookies to sell and is tracking the number of boxes remaining each day. The table shows the relationship between the number of days she has been selling cookies and the total number of boxes remaining.
Girl Scout Cookie Fundraiser
Time (in days) 1 3 4 7
Number of Boxes 24 18 15 6
Which of the following graphs shows the relationship given in the table?
a coordinate plane with the x axis labeled time in days and the y axis labeled number of boxes, with a line that passes through the points 0 comma 27 and 2 comma 21
a coordinate plane with the x axis labeled time in days and the y axis labeled number of boxes, with a line that passes through the points 0 comma 23 and 2 comma 19
a coordinate plane with the x axis labeled time in days and the y axis labeled number of boxes, with a line that passes through the points 0 comma 25 and 2 comma 19
a coordinate plane with the x axis labeled time in days and the y axis labeled number of boxes, with a line that passes through the points 0 comma 27 and 2 comma 23
The correct statement is,
⇒ A coordinate plane with the x axis labeled time in days and the y axis labeled number of boxes, with a line that passes through the points
(0, 27) and (2, 21).
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
The table shows the relationship between the number of days she has been selling cookies and the total number of boxes remaining.
Girl Scout Cookie Fundraiser
Time (in days) 1 3 4 7
Number of Boxes 24 18 15 6
Now, Take two points for the line is, (1, 24), (3, 18)
Hence, The graph of equation is,
⇒ y - 24 = (18 - 24) / (3 - 1) (x - 1)
⇒ y - 24 = - 6/2 (x - 1)
⇒ y - 24 = - 3 (x - 1)
⇒ y - 24 = - 3x + 3
⇒ y = - 3x + 3 + 24
⇒ y = - 3x + 27
Thus, A coordinate plane with the x axis labeled time in days and the y axis labeled number of boxes, with a line that passes through the points (0, 27) and (2, 21).
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Answer:
(0, 27) and (2, 21).
Step-by-step explanation:
Suppose f ( x ) = 3 x 2 + 7 x + 5 . Compute the following:
The values of the function are
a) f(-1)+ f(2) = 32
b) f(-1) - f(2) = -30.
What is Function?In mathematics, a function is represented as a rule that produces a distinct result for each input x. The collection of all the values that the function may input while it is defined is known as the domain. The entire set of values that the function's output can produce is referred to as the range. The set of values that could be a function's outputs is known as the co-domain.
Given:
f( x ) = 3x² + 7x + 5
a) f(-1)+ f(2)
= 3(-1)² + 7(-1) + 5 + 3(2)² + 7(2) + 5
= 3 -7 + 5 +12 + 14 + 5
= 32
So, the value of f(-1)+ f(2)= 32
b) f(-1) - f(2)
= 3(-1)² + 7(-1) + 5 -{ 3(2)² + 7(2) + 5}
= 3 -7 + 5 -{12 + 14 + 5}
=-30
So, the value of f(-1) - f(2)= -30.
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Shawn would like to accumulate $460,000 for his retirement in 11 years. If he is promised a rate of 4.59% compounded semi-annually by his local bank, how much should he invest today?
The amount he should invest today is $279,229.23.
What is compound interest?It is the interest we earned on the interest.
The formula for the amount earned with compound interest after n years is given as:
A = P [tex](1 + r/n)^{nt}[/tex]
P = principal
R = rate
t = time in years
n = number of times compounded in a year.
We have,
A = $460,000
r = 4.59%
t = 11 years
Semi-annually.
So,
n = 2
Now,
A = P [tex](1 + r/n)^{nt}[/tex]
460,000 = P [tex](1 + 0.0459/2)^{22}[/tex]
P = 460,000 / [tex]0.02295^{22}[/tex]
P = $279,229.23
Thus,
He should invest $279,229.23 today.
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