Answer:
2.7
Step-by-step explanation:
1/5 = 0.5
4/5 = 0.8
So this is the equation:
4.5 - 1.8
Answer:
2.4
Step-by-step explanation:
4 1/5 - 1 4/5
Exact form: 12/5
Mixed number form: 2 2/5
Decimal form: 2.4
Perform step one of converting the following CFG into CNF by adding a new start state S. V = {A, B}, } = {0,1}, S = A, R= A +BABB|11 € B +00€
The CFG has a new start state S and the original start state A is now a non-terminal symbol in the set V.
To convert the given CFG into CNF, we need to follow these steps:
Step 1: Add a new start state S and a new production rule S → A.
So, the modified CFG becomes:
S → A
A → BABB | 11
B → 00
Note that the original CFG had productions with single variables on the right-hand side. These productions do not follow the rules of CNF. By introducing a new start state and a new production rule, we can eliminate such productions and bring the CFG into CNF.
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A sample of subjects randomly selected for an Italian study on the relation between income and whether one possesses a travel credit card (such as American Express or Diners Club) is analyzed. At each level of annual income in millions of lira, the data indicates the number of subjects sampled and the number of them possessing at least one travel credit card. (Note: one million lira at the time of the study is currently worth about 500 euros.) Software provides the following results of using logistic regression to relate the probability of having a travel credit card to income, treating these as independent binomial samples. Parameter Estimate Standard error Intercept -3.5561 0.7169
Income 0.0532 0.0131
(a) (2 marks) Report the estimated model equation. (b) (2 marks) Interpret the sign of ß. 2 (c) (3 marks) According to the estimated model equation, for which income is the probability 0.5 to have a travel credit card?
The probability of having a travel credit card is 0.5 is about 66.76 million lira or 33,380 euros.
(a) The estimated model equation is:
log(p/1-p) = -3.5561 + 0.0532*income
where p is the probability of having a travel credit card.
(b) The sign of ß (0.0532) is positive, which means that there is a positive relationship between income and the probability of having a travel credit card. As income increases, the probability of having a travel credit card also increases.
(c) To find the income level at which the probability of having a travel credit card is 0.5, we can set p = 0.5 in the model equation and solve for income:
log(0.5/1-0.5) = -3.5561 + 0.0532*income
0 = -3.5561 + 0.0532*income
income = 3.5561/0.0532
income = 66.76
Therefore, according to the estimated model equation, the income level at which the probability of having a travel credit card is 0.5 is about 66.76 million lira or 33,380 euros.
(a) The estimated model equation is given by:
log(p / (1 - p)) = -3.5561 + 0.0532 * Income
where p is the probability of having a travel credit card and Income is the annual income in millions of lira.
(b) The sign of ß (the coefficient of Income) is positive, which indicates that as the annual income increases, the probability of having a travel credit card also increases.
(c) To find the income level where the probability is 0.5, we need to solve the equation:
log(0.5 / (1 - 0.5)) = -3.5561 + 0.0532 * Income
0 = -3.5561 + 0.0532 * Income
Income = 3.5561 / 0.0532 ≈ 66.86 million lira
So, the probability of having a travel credit card is 0.5 when the annual income is approximately 66.86 million lira.
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Find the three critical points of the function f(x,y)=(x2 +y2)ey^2−x^2 and for each critical point determine if it is a local minimum, local maximum, or saddle point.
The three critical points of the function f(x, y) = (x² + y²)y² - x² are (0, 0), (0, -1), and (0, 1). The point (0, 0) is a saddle point, while (0, -1) is a local maximum and (0, 1) is a local minimum.
To find the critical points, first compute the partial derivatives fx and fy, then set them to zero and solve for x and y. fx = -2x(1+y²) and fy = 2y(3y²+x²).
Solving fx=0 and fy=0 simultaneously, we get (0, 0), (0, -1), and (0, 1) as critical points.
To determine the nature of each critical point, compute the second-order partial derivatives fx, fyy, and fxy, and then find the determinant of the Hessian matrix, D = fx * fyy - fxy². For (0, 0), D < 0, making it a saddle point.
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URGENT MUST BE ANSWERED NOW !! PLEASE AND THANK YOU (image included)
Mitch uses 1/4 of his supply of apples to make apple crisp and 3/8 of his supply of apples to make pies. If Mitch uses 10 pounds of apples, how many pounds of apples are in his supply?
Answer:
16 lbs
Step-by-step explanation:
total of apples = 1/4 + 3/8 = 2/8 + 3/8 = 5/8
then 10 x 8/5 = 16
how many terms of the series Σ[infinity] 2/n^6 n=1 are needed so that the remainder is less than 0.0005? [Give the smallest integer value of n for which this is true.]
The number of terms the series needed so that the remainder is less than 0.0005 is 14. The smallest integer value of n for which this is true is 14.
To find the number of terms needed for the remainder to be less than 0.0005, we need to use the remainder formula for an infinite series:
Rn = Sn - S
where Rn is the remainder after adding n terms, Sn is the sum of the first n terms, and S is the sum of the infinite series.
For this series, S can be found using the formula for the sum of a p-series:
S = Σ[infinity] 2/n^6 n=1 = π^6/945
Now we need to find the smallest value of n for which Rn < 0.0005. We can rewrite the remainder formula as:
Rn = Σ[infinity] 2/n^6 - Σ[n] 2/n^6
Simplifying the first term using the formula for the sum of a p-series, we get:
Σ[infinity] 2/n^6 = π^6/945
Substituting this into the remainder formula, we get:
Rn = π^6/945 - Σ[n] 2/n^6
We want Rn < 0.0005, so we can set up the inequality:
π^6/945 - Σ[n] 2/n^6 < 0.0005
Solving for n using a calculator or computer program, we get:
n ≥ 14
Therefore, we need at least 14 terms of the series Σ[infinity] 2/n^6 n=1 to ensure that the remainder is less than 0.0005, and the smallest integer value of n for which this is true is 14.
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8. the set of all 2 × 2 invertible matrices with the standard matrix addition and scalar multiplication.
In linear algebra, matrix addition and scalar multiplication are fundamental operations that are used to manipulate matrices.
The set of all 2x2 invertible matrices can be expressed using standard matrix addition and scalar multiplication. An invertible matrix is one that has a non-zero determinant. For a 2x2 matrix A, with elements a, b, c, and d:
A = | a b |
| c d |
The determinant of A is calculated as: det(A) = ad - bc. To be invertible, det(A) ≠ 0.
Standard matrix addition is the element-wise addition of two matrices of the same dimensions. If we have another 2x2 matrix B:
B = | e f |
| g h |
The standard matrix addition of A and B is:
A + B = | a+e b+f |
| c+g d+h |
Scalar multiplication involves multiplying every element of a matrix by a scalar value. If we have a scalar k, the scalar multiplication of matrix A is:
kA = | ka kb |
| kc kd |
By combining standard matrix addition and scalar multiplication, we can generate the set of all 2x2 invertible matrices that meet the condition of having a non-zero determinant (ad - bc ≠ 0).
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If using the method of completing the square to solve the quadratic equation x^2-14x-40=0, which number would have to be added to "complete the square"?
The correct value of the number would have to be added to "complete the square" is, 89
We have to given that;
The expression is,
⇒ x²- 14x - 40 = 0
Now, We can formulate;
⇒ x² - 14x - 40 = 0
Add 89 to complete square as;
⇒ x² - 14x + 89 - 40 = 0
⇒ x² - 14x + 49 = 0
⇒ (x - 7)² = 0
Hence, The correct value of the number would have to be added to "complete the square" is, 89
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Find the length of the third side. If necessary, write in simplest radical form.
The hypotenuse of the given triangle is 8√2 units.
What is Pythagoras Theorem?In accordance with the Pythagorean theorem, the square of the length of the hypotenuse (the side that faces the right angle) in a right triangle equals the sum of the squares of the lengths of the other two sides. If you know the lengths of the other two sides of a right triangle, you may apply this theorem to determine the length of the third side. By examining whether the sides of a triangle satisfy the Pythagorean equation, it can also be used to assess whether a triangle is a right triangle. Pythagoras, an ancient Greek mathematician, is credited with discovering the theorem, therefore it bears his name.
The third side of the triangle can be determined using the Pythagoras Theorem as follows:
c² = 8² + 8²
c² = 2(8²)
c = 8√2
Hence, the hypotenuse of the given triangle is 8√2 units.
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A chord of a circle is l cm long. The distance of the chord to the centre of the circle is h cm and the radius of the circle is r cm. Express r in terms of l and h.
The value of r in terms of l and h is,
⇒ r = √((l/2)² + h²)
Now, We can use the Pythagorean theorem to relate r, l, and h as,
Since, The chord of the circle divides the circle into two segments, each with a height of h.
Let's call the segments are A and B.
Then, the length of the chord (l) is equal to the sum of the bases of segments A and B.
Therefore, the length of each base is,
(l/2).
Hence, We can use the Pythagorean theorem to relate r, l/2, and h for one of the segments as;
⇒ r² = (l/2)² + h²
⇒ r = √((l/2)² + h²)
Thus, The value of r in terms of l and h is,
⇒ r = √((l/2)² + h²)
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Can someone pls answers this??? asapp
The correct statement regarding the rate of change of the exponential function is given as follows:
The bacterial culture loses 1/2 of it's size every 1/6 seconds.
How to obtain the half life of the exponential function?The exponential function that gives the bacteria's population after t seconds is given as follows:
B(t) = 9300(1/64)^t.
The rate of change of the exponential function is given as follows:
1/64.
Hence the half-life of the population is obtained as follows:
(1/64)^t = 1/2
(1/2^6)^t = (1/2)
2^(-6t) = 2^(-1)
6t = 1
t = 1/6.
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for each sequence find the first 4 terms and the 10th term
a)10-n
b)6-2n
a) The first 4 terms of the sequence 10-n are:
- n=1: 10-1=9
- n=2: 10-2=8
- n=3: 10-3=7
- n=4: 10-4=6
The 10th term of the sequence 10-n is:
- n=10: 10-10=0
b) The first 4 terms of the sequence 6-2n are:
- n=1: 6-2(1)=4
- n=2: 6-2(2)=2
- n=3: 6-2(3)=0
- n=4: 6-2(4)=-2
The 10th term of the sequence 6-2n is:
- n=10: 6-2(10)=-14
Use the graphs to identify the following: axis of symmetry, x-intercept(s), y-intercept, & vertex.
Determine the range.
Question 2 options:
(-∞, ∞)
[-1 ∞)
[1, 3]
(-∞, -1]
The features of the quadratic function are given as follows:
Axis of symmetry: x = 1.5.x-intercept: (-1, 0) and (4,0).y-intercept: (0,4).vertex: (1.5, 6).The function is decreasing on the following interval:
(1.5, ∞).
How to obtain the features of the quadratic function?First we look at the vertex of the quadratic function, which is the turning point, with coordinates x = 1.5 and y = 6, hence it is given as follows:
(1.5, 6).
Hence the axis of symmetry is of x = 1.5, which is the x-coordinate of the vertex.
The function is concave down, hence the increasing and decreasing intervals are given as follows:
Increasing: (-∞, 1.5)Decreasing: (1.5, ∞)The x-intercepts are the values of x for which the graph crosses the x-axis, when the y-coordinate is of 0, hence they are given as follows:
(-1, 0) and (4,0).
The y-intercept is the value of y when the graph crosses the y-axis, when the x-coordinate is of zero, hence it is given as follows:
(0,4).
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Please help!
I attempted this question myself (second attachment) but got the answer wrong, can someone help me identify where I failed? Was it simply a calculation slip-up or an actual fault in how I tackled the question?
Answer:
Step-by-step explanation:
The issue with your answer is that on line AD, you forgot to account for the left triangle when adding 10 cm + 14 cm = 24 cm. To answer this question, I would recommend solving for the AB triangle with 7.5 cm and 6 cm (using pythagorean theorem). Afterwards, you can use that answer, add it to the length of BC and subtract both from AD (24 cm) to solve for MD. Then, you can solve for the angle. Hope that helps.
Rewrite the following iterated integral using five different orders of integration.
g(x, y, z) dz dy dix 9 ,g(x, y, z) dz dx dy 3 x2 + y 2 3 r9 g(x, y, z) dy dz dx 3 x2 g(x, y, z) dx dz dy 3Jy2 g(x, y, z) dy dx dz g(x, y, z) ax ay az
To rewrite the iterated integral using five different orders of integration, we need to consider all the possible orders of integration for the given function g(x, y, z). Here are the five different orders:
1. dz dy dx: ∫∫∫ g(x, y, z) dz dy dx
2. dz dx dy: ∫∫∫ g(x, y, z) dz dx dy
3. dy dz dx: ∫∫∫ g(x, y, z) dy dz dx
4. dy dx dz: ∫∫∫ g(x, y, z) dy dx dz
5. dx dz dy: ∫∫∫ g(x, y, z) dx dz dy
Remember that the order of integration can affect the complexity of the calculation, so choose the one that simplifies the problem the most based on the given function and limits of integration.
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To rewrite the iterated integral using five different orders of integration, we need to consider all the possible orders of integration for the given function g(x, y, z). Here are the five different orders:
1. dz dy dx: ∫∫∫ g(x, y, z) dz dy dx
2. dz dx dy: ∫∫∫ g(x, y, z) dz dx dy
3. dy dz dx: ∫∫∫ g(x, y, z) dy dz dx
4. dy dx dz: ∫∫∫ g(x, y, z) dy dx dz
5. dx dz dy: ∫∫∫ g(x, y, z) dx dz dy
Remember that the order of integration can affect the complexity of the calculation, so choose the one that simplifies the problem the most based on the given function and limits of integration.
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Don's convertible sports car uses 9.1 L of gas every 100 km. How much gas would it use to travel 735 km?
Therefore, Don's car would use 67.035 L of gas to travel 735 km.
What is cross multiply?Cross multiplication is a method used to compare the relative sizes of two fractions. To cross-multiply two fractions, you multiply the numerator of one fraction by the denominator of the other fraction, and then do the same with the other numerator and denominator, putting the two products equal to each other. For example, if you have the fractions 2/3 and 3/4, you can cross-multiply as follows:
[tex]2/3 = x/4[/tex]
[tex]2 x 4 = 3 x x[/tex]
[tex]8 = 3x[/tex]
[tex]x = 8/3[/tex]
So, the two fractions are equivalent, and both are equal to 8/3. Cross-multiplication can also be used to solve equations that involve fractions, by isolating the variable on one side of the equation.
To find out how much gas Don's car would use to travel 735 km, we can use the fact that the car uses 9.1 L of gas every 100 km. We can set up a proportion to solve for the amount of gas used:
9.1 L / 100 km = x L / 735 km
To solve for x, we can cross-multiply and simplify:
[tex]9.1 L * 735 km = 100 km * x L[/tex]
[tex]6703.5 Lkm = 100 km * x L[/tex]
[tex]6703.5 Lkm / 100 km = x L[/tex]
[tex]67.035 L = x L[/tex]
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what is the probability that ralph gets a turkey, but fails to get a clover (four strikes in a row)?
Bowling Suppose that Ralph gets a strike when bowling 30% of the time. The probability that Ralph gets a turkey, but fails to get a clover (four strikes in a row) is 1.89%.
To find the probability that Ralph gets a turkey (three strikes in a row) but fails to get a clover (four strikes in a row), we need to first calculate the probability of getting a clover.
Assuming that Ralph's chance of getting a strike on any given roll is independent of his previous rolls, the probability of getting a clover is simply the probability of getting four strikes in a row, which is:
[tex]0.3^4[/tex] = 0.0081 or 0.81%
Now, to find the probability of getting a turkey but failing to get a clover, we can use the formula:
P(turkey and no clover) = P(turkey) - P(clover and turkey)
P(turkey) = the probability of getting three strikes in a row, which is:
[tex]0.3^3[/tex] = 0.027 or 2.7%
P(clover and turkey) = the probability of getting four strikes in a row (i.e. a clover), which we already calculated to be 0.81%.
Therefore,
P(turkey and no clover) = 2.7% - 0.81% = 1.89%
So, the probability that Ralph gets a turkey but fails to get a clover is 1.89%.
The complete question is:-
Bowling Suppose that Ralph gets a strike when bowling 30% of the time. what is the probability that Ralph gets a turkey, but fails to get a clover (four strikes in a row)?
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Bowling Suppose that Ralph gets a strike when bowling 30% of the time. The probability that Ralph gets a turkey, but fails to get a clover (four strikes in a row) is 1.89%.
To find the probability that Ralph gets a turkey (three strikes in a row) but fails to get a clover (four strikes in a row), we need to first calculate the probability of getting a clover.
Assuming that Ralph's chance of getting a strike on any given roll is independent of his previous rolls, the probability of getting a clover is simply the probability of getting four strikes in a row, which is:
[tex]0.3^4[/tex] = 0.0081 or 0.81%
Now, to find the probability of getting a turkey but failing to get a clover, we can use the formula:
P(turkey and no clover) = P(turkey) - P(clover and turkey)
P(turkey) = the probability of getting three strikes in a row, which is:
[tex]0.3^3[/tex] = 0.027 or 2.7%
P(clover and turkey) = the probability of getting four strikes in a row (i.e. a clover), which we already calculated to be 0.81%.
Therefore,
P(turkey and no clover) = 2.7% - 0.81% = 1.89%
So, the probability that Ralph gets a turkey but fails to get a clover is 1.89%.
The complete question is:-
Bowling Suppose that Ralph gets a strike when bowling 30% of the time. what is the probability that Ralph gets a turkey, but fails to get a clover (four strikes in a row)?
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An object is 25.0 cm from the center of a spherical silvered-glass Christmas tree ornament 6.20 cm in diameter. What is the position of its image (counting from the ornament surface)? Follow the sign rules. Express your answer with the appropriate units. What is the magnification of its image?
The image magnification is about 0.133 times the size of the object and is inverted.
What is magnification?Magnification is the ratio of the size of the image to the size of the object. In optics, it is often used to describe how much larger or smaller an image appears compared to the object being viewed. It is calculated by dividing the height or size of the image by the height or size of the object. Magnification can be positive or negative, depending on whether the image is upright or inverted, respectively.
According to the given informationWe can use the mirror equation to find the position of the image:
1/f = 1/do + 1/di
where f is the focal length, do is the object distance, and di are the image distance.
Since the ornament is a spherical mirror, the focal length is half the radius of curvature, which is equal to half the diameter of the ornament:
f = R/2 = 6.20 cm/2 = 3.10 cm
The object distance is given as 25.0 cm.
Substituting into the mirror equation and solving for di, we get:
1/3.10 = 1/25.0 + 1/di
di = 3.33 cm
The image is formed 3.33 cm from the center of the ornament, which is 0.23 cm beyond the surface of the ornament (since the ornament has a radius of 3.10 cm).
The magnification of the image can be found using the:
m = -di/do
where the negative sign indicates that the image is inverted.
Substituting the values we found, we get:
m = -(3.33 cm)/(25.0 cm) = -0.133
So the image is about 0.133 times the size of the object and is inverted.
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determine whether the sets s1 and s2 span the same subspace of r3. s1 = {(1, 2, −1), (0, 1, 1), (2, 5, −1)} s2 = {(−2, −6, 0), (1, 1, −2)}
Therefore, s1 and s2 do not span the same subspace of R3.
To determine whether the sets s1 and s2 span the same subspace of R3, we need to check if one set can be obtained as a linear combination of the other set.
We can start by checking if the vectors in s2 can be obtained as a linear combination of the vectors in s1. We can set up the following system of equations:
[tex]a(1, 2, -1) + b (0, 1, 1) + c(2, 5, -1) = (-2, -6, 0)[/tex]
[tex]d(1, 2, -1) + e(0, 1, 1) + f(2, 5, -1) = (1, 1, -2)[/tex]
We can write this system in matrix form as follows:
[tex]\left[\begin{array}{ccc}1&0&2|-2\\2&1&5|-6\\-1&1&-1|0\end{array}\right]*\left[\begin{array}{ccc}1&0&2|1\\2&1&5|1\\-1&1&-1|-2\end{array}\right][/tex]
We can row reduce this augmented matrix to find the solutions for the system of equations:
[tex]\left[\begin{array}{ccc}1&0&2|-2\\0&1&1|2\\0&0&0|0\end{array}\right]*\left[\begin{array}{ccc}1&0&2|1\\2&1&5|1\\0&0&0|0\end{array}\right][/tex]
The matrix on the left represents the coefficients for the linear combinations of the vectors in s1 that would give us the vectors in s2. Since the matrix has a row of zeros, this means that we can't obtain the vectors in s2 as a linear combination of the vectors in s1.
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given the following information about events a and b p(a)=0 p(a and b)=0 p(b)=0.25 are a and b mutually exclusive, independent, both, or neither?
Based on the given information, we can determine that events A and B are mutually exclusive. This is because the probability of their intersection, P(A and B), is equal to 0.
Based on the information provided for events A and B, we can determine if they are mutually exclusive, independent, both, or neither. Here's an analysis using the given probabilities:
1. P(A) = 0
2. P(A and B) = 0
3. P(B) = 0.25
Mutually exclusive events are events that cannot occur at the same time. In other words, if A occurs, then B cannot occur, and vice versa. If events are mutually exclusive, then P(A and B) = 0.
Independent events are events where the occurrence of one event does not affect the probability of the other event. If events A and B are independent, then P(A and B) = P(A) * P(B).
Now let's analyze:
A and B are mutually exclusive because P(A and B) = 0.
To check for independence, we calculate P(A) * P(B) = 0 * 0.25 = 0. Since P(A and B) = 0, A and B are also independent.
Therefore, events A and B are both mutually exclusive and independent. If A and B were independent events, then their intersection probability would be equal to the product of their individual probabilities, i.e. P(A and B) = P(A) * P(B), which is not the case here. Therefore, we can conclude that events A and B are mutually exclusive, but not independent.
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Question 14
Which explicit formula describes the pattern in this table?
d
2
3
5
10
C
6.28
9.42
15.70
31.40
Od 3.14x C
O 3.14x C-d
O 31.4 x 10 C
OC 3.14 x d
1 pts
The explicit formula is C = 3.14 × d.
What is the explicit formula?
The formal equations for L-functions in mathematics are Riemann's zeta function and links between sums over an L-function's complex number zeroes and sums over prime powers.
Here, we have
Given:
d C
2 6.28
3 9.42
5 15.70
10 31.40
We have to find the explicit formula that describes the given pattern.
We concluded from the given table that
when d = 2
we get
c = 3.14 × 2 = 6.28
When d = 3
We get
c = 3.14 × 3 = 9.42
When d = 5
We get
c = 3.14 × 5 = 15.70
When d = 10
we get
c = 3.14 × 10 = 31.40
Hence, the explicit formula is C = 3.14 × d.
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In a company's first year in operation, it made an annual profit of $112,000. The profit of the company increased at a constant 18% per year each year. How much total profit would the company make over the course of its first 26 years of operation, to the nearest whole number?
If the company made a profit of $112000, i first year operation, then the total profit made by the company in 26 years of operation is $8170286.
In order to find the profit after 26 years, we use the formula for "future-value" of investment with compound interest;
⇒ FV = PV × (1 + r)ⁿ,
where FV is = future value, PV is = present value, r is = interest rate per period, and n = time (in years),
In this case, the "present-value" is $112,000, the "interest-rate" per period is 18%, and time is 26 years.
We have to find the total profit, which is = "future-value" - "present-value",
⇒ Total profit = FV - PV,
Substituting the value,
We get,
⇒ FV = $112000 × (1 + 0.18)²⁶,
⇒ FV = $8282285.79 ≈ $8282286,
So, Total profit = $8282286 - $112000,
Total profit = $8170286,
Therefore, the company would make a total-profit of $8170286.
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Find the circumference of a circle with diameter 66cm(Take π=22/7)
Answer:207
Step-by-step explanation: circumference = to 2πr or πd
substitute the diameter into the equation πd (22/7)(66) and you get 207.4285...
Let ABCD be a cyclic quadrilateral such that AB=9, BC=6, CD=7, AD=8, AC=12.Then BD=A)9.5 B)10.75 C)9 D) 9.75 E)N.A.
The length of BD is approximately option (D) 9.75 units
Ptolemy's theorem is a theorem in Euclidean geometry that relates the sides and diagonals of a cyclic quadrilateral. A cyclic quadrilateral is a quadrilateral that can be inscribed in a circle.
We can use Ptolemy's theorem to find the length of BD
AC × BD = AB × CD + BC × AD
Substituting the given values:
12 × BD = 9 × 7 + 6 × 8
Multiply the numbers
12 × BD = 63 + 48
12 × BD = 111
BD = 111/12
Divide the numbers
BD ≈ 9.75 units
Therefore, the correct option is (D) 9.75 units
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How old is The Grim Adventures of Billy and Mandy The Secret Snake Club episode since it's premiere on September 1, 2005 on Krowten Nootrac Europe block in 2023?
Answer:
18 years as 2023
-2005
18
Find y as a function of x if y'''-6y''-y'+6y=0,y(0)=0, y'(0)=-8, y''(0)=35.
y(x)=
The final solution to the differential equation is:
[tex]y(x) = (-35/2) e^x + (35/2) e^{(2x)} - 9xe^{(2x)[/tex]
To find y as a function of x, we can use the characteristic equation:
[tex]r^3 - 6r^2 - r + 6 = 0[/tex]
We can try factoring it using rational roots theorem:
Possible rational roots are ±1, ±2, ±3, ±6
Trying them out, we find that r = 1 and r = 2 are roots:
[tex](r - 1)(r - 2)^2 = 0[/tex]
Expanding and solving for r, we get:
r = 1, 2, 2
So the general solution to the differential equation is:
[tex]y(x) = c1 e^x + c2 e^{(2x) }+ c3 xe^{(2x)}[/tex]
To find the values of the constants c1, c2, and c3, we can use the initial conditions:
y(0) = c1 + c2 = 0
y'(0) = c1 + 2c2 + 2c3 = -8
y''(0) = c2 + 4c3 = 35
Solving these equations simultaneously, we get:
c1 = -35/2
c2 = 35/2
c3 = -9
So the final solution to the differential equation is:
[tex]y(x) = (-35/2) e^x + (35/2) e^{(2x) }- 9xe^{(2x)[/tex]
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9. Graph the circle (x-3)² + (y+6)² = 16
42
At the end of a baseball game, the players were given the choice of having a bottle of
water or a box of juice. Of all of the players, 12 chose a bottle of water, which was
3
4 of the total number of players. Write and solve an equation to determine p,
the total number of players at the baseball game.
Show your work.
The equation to determine p, which is the total number of player at the basketball game, is 12 = p x 3 / 4 .
The number of players at the basketball game is 16 players .
How to find the number of players ?The equation to find the number of players is;
Players who chose water = total players x proportion of players who chose water
12 = p x 3 / 4
This means that solving for p gives :
12 = p x 3 / 4
12 ÷ 3 / 4 = p
p = 12 ÷ 3 / 4
p = 12 / 0.75
p = 16 players
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Select the equation that most accurately depicts the word problem. A class of 19 pupils has five more girls than boys. Let n = the number of boys.
n + (n + 5) = 19
n - (n + 5) = 19
n + (n + 19) = 5
n + (n - 19) = 5
SPRING BREAK GEOMETRY HW
The two lines are neither parallel nor perpendicular.
What is parallel line?Parallel lines are two lines that are always the same distance apart and never intersect. In Euclidean geometry, parallel lines are denoted by an arrow symbol or by two vertical lines.
What is perpendicular line?A perpendicular line is a line that intersects another line at a right angle (90 degrees).
To determine if the two lines 2x-7y=-14 and y=(-2/7)x-1 are parallel, perpendicular or neither, we need to compare their slopes.
The given equation 2x-7y=-14 can be rearranged into slope-intercept form:
2x - 7y = -14
-7y = -2x - 14
y = (2/7)x + 2
So the slope of the first line is 2/7.
The second equation y=(-2/7)x-1 is already in slope-intercept form, so the slope of the second line is -2/7.
If two lines have slopes that are the same, they are parallel. If the product of their slopes is -1, then they are perpendicular. Otherwise, they are neither parallel nor perpendicular.
In this case, the product of the slopes is:
(2/7) * (-2/7) = -4/49
Since the product of the slopes is not -1 and it is not equal to each other, the two lines are neither parallel nor perpendicular.
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Question
A town's yearly snowfall in inches over a 10-year period is recorded in this table.
What is the mean of the snowfall amounts?
Responses
15.0 in.
15.0 in.
17.0 in.
17.0 in.
17.9 in.
17.9 in.
Year Snowfall in inches
1997 15
1998 11
1999 18
2000 25
2001 13
2002 20
2003 16
2004 28
2005 15
2006 18
18.9 in
18.9 in
The mean (average) of the snowfall amounts is 17.9 inches.
What is mean?In statistics, the mean is a measure of central tendency that represents the average value of a dataset. It is calculated by summing up all the values in the dataset and then dividing the result by the total number of values.
What is average?In statistics, the terms "mean" and "average" are often used interchangeably to refer to the same concept. Both terms represent a measure of central tendency that represents the typical or average value of a dataset.
According to given information:To find the mean (average) of the snowfall amounts, we need to add up all the snowfall amounts and divide by the total number of years.
Adding up the snowfall amounts:
15 + 11 + 18 + 25 + 13 + 20 + 16 + 28 + 15 + 18 = 179
Dividing by the total number of years (10):
179/10 = 17.9
So the mean (average) of the snowfall amounts is 17.9 inches.
Therefore, the correct response to the mean is 17.9 in.
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