Therefore, the coordinates of point B are approximately (12.67, 0.67).
What is equation?In mathematics, an equation is a statement that asserts the equality of two expressions. Equations are written using an equal sign (=) between the two expressions that are being compared. The expressions on either side of the equal sign are called the left-hand side (LHS) and the right-hand side (RHS) of the equation. The equation is true if the LHS is equal to the RHS. Equations are used to represent various relationships and patterns in mathematics, and are an important tool in problem-solving and mathematical modeling.
Here,
(a) To calculate the length of OC, we need to find the coordinates of point O, which is the intersection of the diagonals of the parallelogram. The midpoint of AC is:
((12+5)/2, (0+5)/2) = (8.5, 2.5)
Therefore, the equation of the line passing through the midpoint of AC and perpendicular to AC is:
y - 2.5 = -(5-0)/(5-12) (x - 8.5)
Simplifying:
y - 2.5 = 5/7 (x - 8.5)
y = 5/7 x - 1
This is the equation of the line passing through O and parallel to AB. We can see that when x = 12, y = 5/7 * 12 - 1 = 7.4. Therefore, the coordinates of O are (12, 7.4).Using the distance formula, we can now calculate the length of OC:
OC = √((12-5)² + (7.4-0²) = √(109.96) ≈ 10.49
Therefore, the length of OC is approximately 10.49 units.
(b) The gradient of OC can be found using the coordinates of points O and C:
m = (y₂ - y₁)/(x₂ - x₁) = (7.4 - 5)/(12 - 5) = 0.4/1 ≈ 0.4
Therefore, the gradient of OC is approximately 0.4.
(c) The equation of line AB can be found using the coordinates of points A and B:
m = (y₂ - y₁)/(x₂ - x₁) = (y - 0)/(x - 12)
Simplifying and substituting the coordinates of point A:
0.4 = (y - 0)/(x - 12)
0.4(x - 12) = y
Therefore, the equation of line AB is y = 0.4x - 4.8.
(d) The coordinates of point B can be found by solving the system of equations formed by the equations of lines AB and OC. Equating y in both equations:
0.4x - 4.8 = 5/7 x - 1
Simplifying and solving for x:
0.3x = 3.8
x = 12.67
Substituting x in either equation:
y = 0.4(12.67) - 4.8 ≈ 0.67
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Mr. Ed earns $15.50 per hour. His regular hours are 40 hours per week, and he receives
time-and-a-half overtime. Find his total pay for a week in which he works 45 hours.
Answer:
For the first 40 hours that Mr. Ed works, he earns his regular rate of pay, which is $15.50 per hour. So, his regular pay for the week is:
40 hours x $15.50 per hour = $620
For the additional 5 hours he works, he earns overtime pay at a rate of time-and-a-half, which is 1.5 times his regular pay rate. So, his overtime pay for the week is:
5 hours x $15.50 per hour x 1.5 = $116.25
Therefore, Mr. Ed's total pay for the week in which he works 45 hours is:
$620 (regular pay) + $116.25 (overtime pay) = $736.25.
Please help!!
Given M || N, find the value of x.
(x+1) (7x-5)
Answer:x=23
Step-by-step explanation:
x+1+7x-5=180
8x-4=180
8x=184
x=184/8
x=23
Select the correct answer from each drop-down menu.
The area of the shaded square is
square inches. The length of the unshaded rectangle is
inches.
The estimated value of the length of the shaded square is
inches. The estimated value of the area of the unshaded rectangle is
square inches.
The completed statement with regards to the area of the square and the rectangle are;
The estimated value of the length of the shaded square is 5·√5 inches. The estimated value of the area of the unshaded rectangle is 175 square inches.
What is the area of a square?The area of a square is the product of the side lengths which are congruent, therefore;
Area of a square = Side length, s × Side length, s = s²
The possible figure in the question includes;
A shaded square that is 125 square inches
An adjacent unshaded rectangle, that share a side with the square that has a side length of 7·√5 inches
Please find attached the possible drawing of the figure in the question, (not drawn to scale) obtained from a similar question posted online, created with MS Word.
Therefore;
The side length of the square = √(125) inches = 5·√5 inches
The estimated value of the side length of the square is; 5·√5 inches
The area of a rectangle = Length × Width
The length of the rectangle = 7·√5 inches
The width of the rectangle = 5·√5 inches
Therefore;
The area of the unshaded rectangle, therefore is; 5·√5 × 7·√5 = 175
The estimated area of the unshaded rectangle is 175 square inches
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Given the function f(x) = 1/x-1 and g(x) = 1/x+2 + 4, describe the transformation of the graph of function f onto the graph of function g.
To describe the transformation of the graph of function f(x) onto the graph of function g(x), we can compare the two functions and identify the changes that have been made.
First, note that f(x) and g(x) have different denominators: x-1 for f(x) and x+2 for g(x). This means that the graphs of f(x) and g(x) will have vertical asymptotes at x=1 and x=-2, respectively.
Next, we can see that g(x) is a transformation of f(x) because it is obtained by applying one or more transformations to f(x). Specifically, we can identify the following transformations:
Horizontal shift to the left by 3 units: f(x) is shifted 3 units to the right to get g(x). This is because g(x) has x+2 in the denominator, which is equivalent to f(x) with x-(-2) = x+2 in the denominator. So g(x) is equivalent to f(x) shifted 3 units to the left.
Vertical shift upwards by 4 units: The entire graph of f(x) is shifted 4 units upwards to get the graph of g(x). This is because the constant term 4 is added to g(x) but not present in f(x).
Vertical compression: The vertical scale of the graph of g(x) is compressed compared to the graph of f(x). This is because the size of the denominator is increasing for g(x) relative to f(x), so the graph will appear "squeezed" vertically.
Therefore, the transformation of the graph of function f(x) onto the graph of function g(x) involves a horizontal shift to the left by 3 units, a vertical shift upwards by 4 units, and a vertical compression.
The graph of the polynomial f(x) is shown below. Which of the following is * 1 point
NOT a factor of f(x)?
х
•(x-2)
•(*-7)
• (x+ 1)
• (x+2)
(x+2), (x+1), and (x-2) are factors of f(x) because they correspond to the roots of the polynomial.
What is Polynomial function ?
A polynomial function is a type of mathematical function that consists of a sum of terms, where each term is a product of a constant coefficient and one or more variables raised to non-negative integer powers. In other words, a polynomial function is an algebraic expression that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents.
Thank you for providing the graph of the polynomial f(x). Based on the graph, we can see that the polynomial has roots at x = -2, x = -1, x = 2, and x = 7. Therefore, (x+2), (x+1), and (x-2) are factors of f(x) because they correspond to the roots of the polynomial.
However, since there is no point on the graph where f(x) is equal to zero when x = -7, we can conclude that (-x+7) is NOT a factor of f(x).
Therefore, (x+2), (x+1), and (x-2) are factors of f(x) because they correspond to the roots of the polynomial.
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If Planet I is 31.1 million miles farther from the sun than Planet II, then Planet III is 24.6 million miles farther from the sun than Planet I. When the total of the distances for these three planets from the sun is 197.8
million miles, how far away from the sun is Planet II?
-4(X-1)+2 which of the following is equivalent to the expression
Answer:
-2 ( 2x - 3 )
Step-by-step explanation:
We know that,
( + ) × ( + ) = ( + )
( - ) × ( - ) = ( - )
( + ) × ( - ) = ( - )
Accordingly,
-4 ( x - 1 ) + 2
First, solve the brackets. That is, multiply each term inside the brackets by -4.
- 4x + 4 + 2
Combine like terms.
- 4x + 6
You can take the common factor out of the brackets.
-2 ( 2x - 3 )
What is 6% times 39%
Answer:
0.0234
Step-by-step explanation:
please give brainliest
30 points and brainliest!
Answer: a )The answer is 196.126.
b )
Step-by-step explanation:
a) Multiply 33.1 and 18.2= 602.62
Divide the result by 5.8:
602.62 / 5.8 = 196.126
Therefore, 33.1x18.2 / 5.8 = 196.126.
write the equation of a line perpindicular to y=2x-5 that passes through the point (2,-5)
please help me!!!
The equation of a line perpendicular to y=2x-5 that passes through the point (2,-5) is y = -1/2x - 4.
What is point slope form?The point slope form is given as y - y1 = m(x - x1). When a line's slope and a point on the line are known, the equation may be used to get the equation of the line. Just enter the specified point and slope into the equation and simplify as necessary to utilise the point-slope form.
A line graph can also be drawn using the point-slope form. Plot the provided point on the coordinate plane first before using this form to graph a line. As you move up or down and to the right or left from the starting point, depending on whether the slope is positive or negative, you may utilise the slope to identify more places along the line.
The given equation of the line is y = 2x - 5.
Here the slope is 2.
For a perpendicular line the slope is negative and reciprocal thus.
slope = - 1/2.
Now using the point slope form:
y - y1 = m(x - x1)
y + 5 = -1/2(x - 2)
y + 5 = (-1/2)x + 1
y = (-1/2)x - 4
Hence, the equation of a line perpendicular to y=2x-5 that passes through the point (2,-5) is y = -1/2x - 4.
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The diameter of the base of a cone is shown on the grid. Each square unit on the grid has a side length of 1 foot. The volume of the cone is approximately 200.96 cubic feet. Determine the height of the cone, and construct it vertically on the grid with respect to the center of the cone's base.
Use 3.14 for .
Answer:
First, we need to find the radius of the base of the cone. We can see from the grid that the diameter is 8 units, so the radius is 4 units (or 4 feet).
Next, we can use the formula for the volume of a cone to find the height:
V = (1/3)πr^2h
Substituting the given volume and radius, and using 3.14 for π, we get:
200.96 = (1/3) x 3.14 x 4^2 x h
Simplifying and solving for h, we get:
h = 200.96 / (1/3 x 3.14 x 4^2)
h = 200.96 / 53.02
h ≈ 3.79 feet (rounded to two decimal places)
To construct the cone vertically on the grid with respect to the center of the base, we can draw a circle with radius 4 units (or 4 feet) centered at the point (4,4) on the grid. Then, we can draw a line from the center of the circle (point (4,4)) up to a point above the circle that is 3.79 units (or 3.79 feet) away from the center. This line represents the height of the cone. Finally, we can connect the endpoint of the line to the points where the circle intersects the grid to complete the cone.
Reflections; rotations and translations are transformations that change the what?
Reflections, rotations, and translations are all transformations that change the position and/or orientation of a geometric figure.
What is reflection?In mathematics, reflection is a transformation that flips a figure over a line called the line of reflection. This line acts like a mirror, reflecting the original figure onto the opposite side of the line.
Reflections, rotations, and translations are all transformations that change the position and/or orientation of a geometric figure.
Reflections (also known as flips) change the orientation of a figure by flipping it across a line of reflection, which acts like a mirror.
Rotations change the orientation of a figure by rotating it around a fixed point. The figure stays the same shape and size, but its position and orientation in space changes.
Translations (also known as slides) change the position of a figure by sliding it along a straight line without changing its orientation or shape.
All of these transformations are important in geometry and other fields, such as physics and computer graphics, and can be used to describe the motion and properties of geometric objects.
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The histograms display the frequency of temperatures in two different locations in a 30-day period.
A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 14. A shaded bar stops at 10 above 60 to 69, at 9 above 70 to 79, at 5 above 80 to 89, at 4 above 90 to 99, and at 2 above 100 to 109. There is no shaded bar above 110 to 119. The graph is titled Temps in Sunny Town.
A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 14. There is no shaded bar above 60 to 69. A shaded bar stops at 4 above 70 to 79, at 4 above 80 to 89, at 6 above 90 to 99, at 6 above 100 to 109 and at 10 above 110 to 119. The graph is titled Temps in Beach Town.
When comparing the data, which measure of center should be used to determine which location typically has the cooler temperature?
Median, because Sunny Town is symmetric
Mean, because Sunny Town is skewed
Median, because Beach Town is skewed
Mean, because Beach Town is symmetric
Tο determine which lοcatiοn typically has the cοοler temperature, we shοuld cοmpare the median temperature οf Sunny Tοwn tο the mean temperature οf Beach Tοwn. Thus, cοrrect οptiοns are:
A) Median, because Sunny Tοwn is symmetricB) Mean, because Sunny Tοwn is skewedwhat is median?Median is a measure οf central tendency that represents the middle value in a dataset when the values are arranged in οrder οf magnitude.
When cοmparing the data tο determine which lοcatiοn typically has the cοοler temperature, the measure οf center tο use depends οn the shape οf the distributiοn οf the data.
Fοr the Sunny Tοwn data, since the histοgram is symmetric, we can use the median as a measure οf center. The median οf the Sunny Tοwn data wοuld be the value that separates the data intο twο equal halves.
Fοr the Beach Tοwn data, since the histοgram is skewed, we can use the mean as a measure οf center. The mean οf the Beach Tοwn data wοuld be the average οf all the data pοints.
Therefοre, tο determine which lοcatiοn typically has the cοοler temperature, we shοuld cοmpare the median temperature οf Sunny Tοwn tο the mean temperature οf Beach Tοwn.
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Question 2
State whether the triangle is acute,obtuse or right ???
Answer:
Step-by-step explanation:
We can solve this question by applying the Pythagorean theorem to the triangle (a^2+b^2=c^2). The Pythagorean theorem states that if the two shorter lengths are both squared and added the sum of those two numbers should be equal to the longest side squared. So 6 and 8 are the shorter sides of this triangle so we can plug either one in for either a or b, 6^2+8^2=9^2. Once you do that you have to square each individual number. You should get 36+64=81
36+64 is 100 and 100 does not equal 81 therefore this triangle is not a right triangle.
Answer:
Step-by-step explanation:
If a² + b² > c² , the triangle is acute,
If a² + b² = c² , the triangle is a right triangle,
If a² + b² > c² , the triangle is obtuse,
where "a" and "b" are the lengths of the 2 shorter sides of the triangle and "c" is the length of the longest side.
~~~~~~~~~~~~~
6² + 8² > 9² ⇒ given triangle is acute
what is the average allowance for each student?
$7,$12,$8.50,$10,$7,$8,$10.50,$11
The average allowance for each student is $9.25.
What is the average allowance for each student?To find the average allowance for each student, we need to add up all the allowances and divide by the total number of students.
Adding up the allowances:
$7 + $12 + $8.50 + $10 + $7 + $8 + $10.50 + $11 = $74
There are 8 students, so we divide the total allowance by 8 to get:
$74 / 8 = $9.25
Therefore, the average allowance for each student is $9.25.
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In a right triangle, cos (8x) = sin (4x + 3)°. Find the larger of the triangle's two
acute angles.
The larger of the two acute angles is 58°.
The larger of the two acute angles in a right triangle is always opposite to the longer side of the triangle. This is because the longer side is always opposite to the larger angle, and the shorter side is always opposite to the smaller angle.
Let's start by using the identity cos(90°-x) = sin(x) for any angle x. This identity relates the cosine and sine of complementary angles, which are angles that add up to 90 degrees. In a right triangle, one of the angles is always 90 degrees, so the other two angles are complementary.
Applying this identity to the given equation, we get:
cos(90° - 8x) = sin(4x + 3)°
Using another identity, sin(90°-x) = cos(x), we can simplify the left-hand side of the equation:
sin(8x) = sin(4x + 3)°
Now we have two angles with the same sine, which means they differ by a multiple of 360 degrees. In other words, either:
8x = 4x + 3 + 360n (where n is an integer)
or
8x = 177 - (4x + 3) + 360n
Simplifying the first equation, we get:
4x = 360n - 3
x = 90n - 3÷4
Simplifying the second equation, we get:
12x = 177 + 360n
x = 59 + 30n
Since x is an acute angle, it must be between 0 and 90 degrees. Therefore, we can eliminate the solution x = 59 + 30n, because it exceeds 90 for n ≥ 2. This leaves us with:
x = 90n - 3÷4
Now we need to find the larger of the two acute angles in the right triangle. Let's call these angles A and B, with A being the larger one. Then:
A + B = 90
We know that one of the acute angles is 8x, and the other is 4x + 3 degrees. Without loss of generality, let's assume that 8x is the larger one (i.e., A = 8x and B = 4x + 3).
Substituting these values into the equation above, we get:
8x + 4x + 3 = 90
12x = 87
x = 7.25
Therefore, the larger acute angle is A = 8x = 58 degrees (rounded to the nearest degree).
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How many total blocks does Ben need to walk north and east to get from his home to the playground and home again?
When all n teams in a league play every other team twice, a total of N games are played, where N = n^2 - n. A basketball league has 11 teams and all teams play each other twice. How many games are played?
Answer: When there are n teams in a league and each team plays every other team twice, then each team will play a total of n-1 games (since they don't play against themselves). Therefore, the total number of games played in the league is the sum of all the games played by each team, which is:
Total number of games = (number of teams) × (number of games played by each team) / 2
The division by 2 is necessary since each game involves two teams, so counting each game twice would result in double counting.
For the given basketball league with 11 teams, the total number of games played would be:
Total number of games = 11 × (11-1) / 2
= 11 × 10 / 2
= 55 × 2
= 110
Therefore, 110 games would be played in the league.
Step-by-step explanation:
HELPPPPPPP TRIGONOMETRY
The following are the values for the side and angles for each right triangle using trigonometric ratios:
12). x = 30.41
13). ? = 19.47°
14). ? = 47.96°
15). ? = 55.15°
What are trigonometric ratiosThe trigonometric ratios involves the relationship of an angle of a right-angled triangle to ratios of two side lengths. Basic trigonometric ratios includes; sine cosine and tangent.
12). tan 58 = x/19 {opposite/adjacent}
x = 19 × tan 58 {cross multiplication}
x = 30.4064
13). sin ? = 6/18 {opposite/hypotenuse}
? = sin⁻¹(6/18) {cross multiplication}
? = 19.4712
14). tan ? = 41/37 {opposite/adjacent}
? = tan⁻¹(41/37) {cross multiplication}
? = 47.9357
13). cos ? = 8/14 {adjacent/hypotenuse}
? = tan⁻¹(8/14) {cross multiplication}
? = 55.1501
Therefore, the values for the side and angles for each right triangle using trigonometric ratios are:
12). x = 30.41
13). ? = 19.47°
14). ? = 47.96°
15). ? = 55.15°
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Find the volume of the composite figure.
Answer:
volume = 290m
Step-by-step explanation:
box 1
[tex]vol= lwh\\=3*5*6\\=90m[/tex]
box 2
[tex]vol=lwh\\=8*5*5\\=200m[/tex]
total volume = 90+200 =290m
explain the logic in fractions where 1/6+2/3+3/7 becomes 7/42+28/42+18/42
Answer:
Step-by-step explanation:
What are fractions?Fractions are parts or pieces of a complete thing.
In this problem, the fractions start out with varying denominators, and then end with the same denominator. In order to go from different denominators to the same denominator, we must find a common denominator.
What is a common denominator?A common denominator is a number that denominators of fractions can equal when multiplied by something else. Ex: 1/3 + 2/ 7 Multiples of 3: 3, 6, 9, 12, 15, 18, 21 Multiples of 7: 7, 14, 21. Both 3 and 7 have 21 in common, so this would be the common denominator.
A common denominator is needed so fractions with different denominators can be combined. To get from 6, 3, and 7 to 42, the multiples of 2, 3, and 7 must be listed.
Multiples of 6: 6, 12, 18, 24, 30, 36, 42
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 29, 42
Multiples of 7: 7, 14, 21, 28, 35, 42
All three numbers have 42 in common, so that is their common denominator. Whatever was done to the denominator, must be done to the numerator. Now, we must take the number that can be multiplied by the denominator to reach 42 and multiply it by the numerator.
[tex]\frac{1*7}{6*7}}[/tex]
[tex]=\frac{7}{42}[/tex]
[tex]\frac{2*14}{3*14}[/tex]
[tex]=\frac{28}{42}[/tex]
[tex]\frac{3*6}{7*6}[/tex]
[tex]=\frac{18}{42}[/tex]
So, to sum it up, when trying to add fractions with different denominators, find a common denominator by listing multiples of the denominators and multiply the numerator by the number the denominator was multiplied by to get the common denominator.
The logic in this fraction addition problem is to find a common denominator for all the fractions and then add the numerators. In this case, the common denominator is the least common multiple of the denominators, which is 42.
To convert the first fraction, 1/6, to have a denominator of 42, we need to multiply both the numerator and denominator by 7. This gives us 7/42.To convert the second fraction, 2/3, to have a denominator of 42, we need to multiply both the numerator and denominator by 14. This gives us 28/42.To convert the third fraction, 3/7, to have a denominator of 42, we need to multiply both the numerator and denominator by 6. This gives us 18/42.Now that all the fractions have a common denominator of 42, we can add the numerators to get the final answer:
[tex]\begin{aligned} \sf \dfrac{1}{6} + \dfrac{2}{3} + \dfrac{3}{7} = \dfrac{7}{42} + \dfrac{28}{42} + \dfrac{18}{42} = \bold{\dfrac{53}{42}} \end{aligned}[/tex]
Therefore, the sum of the fractions is 53/42.
I hope this helps!
Find the product……..
The product of the expressions are;
Step 1: (x + 2)(x + 3) and 3(x + 3)/4(x + 5)
Step 3: 4(x + 3) × 3(x + 3)/4(x + 5)
Step 4: 3/x + 5
How to determine the productIt is important to note that algebraic expressions are described as expressions that are composed of variables, terms, coefficients, constants and factors.
From the information given, we have the fraction;
4x + 8/x² + 5x + 6 × 3x + 9/4x + 20
To determine the product, let us reduce the expressions to their lowest forms, we have;
4x + 8 = 4(x + 2)
x² + 5x + 6 = (x + 2)(x + 3)
3x + 9 = 3(x +3)
4x + 20 = 4(x + 5)
Substitute the expressions
4(x + 2)/(x + 2)(x + 3) × 3(x +3)/4(x + 5)
divide the common terms
4(x + 3) × 3(x + 3)/4(x + 5)
Divide further, we have.
3/x + 5
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Portfolio expected return. You own a portfolio that is invested 35% in stock X, 20% in stock Y, and 45% in stock Z. The expected returns on these three stocks are 9%, 15% and 12%, respectively. What is the expected return, variance and standard deviation on the portfolio?
Answer:
To calculate the expected return on the portfolio, we use the following formula:
Expected return = (weight of stock X * expected return of stock X) + (weight of stock Y * expected return of stock Y) + (weight of stock Z * expected return of stock Z)
Expected return = (0.35 * 0.09) + (0.2 * 0.15) + (0.45 * 0.12) = 0.0321 or 3.21%
To calculate the variance of the portfolio, we use the following formula:
Variance = (weight of stock X)^2 * variance of stock X + (weight of stock Y)^2 * variance of stock Y + (weight of stock Z)^2 * variance of stock Z + 2 * weight of stock X * weight of stock Y * covariance of stocks XY + 2 * weight of stock X * weight of stock Z * covariance of stocks XZ + 2 * weight of stock Y * weight of stock Z * covariance of stocks YZ
Assuming that the stocks are uncorrelated, the covariance terms will be zero. Also, we assume that the variances of the stocks are equal to the square of their standard deviations. Therefore, we can simplify the formula to:
Variance = (weight of stock X)^2 * standard deviation of stock X^2 + (weight of stock Y)^2 * standard deviation of stock Y^2 + (weight of stock Z)^2 * standard deviation of stock Z^2
Variance = (0.35)^2 * (0.09)^2 + (0.2)^2 * (0.15)^2 + (0.45)^2 * (0.12)^2 = 0.00060167 or 0.060167%
To calculate the standard deviation of the portfolio, we take the square root of the variance:
Standard deviation = sqrt(0.00060167) = 0.0245 or 2.45%
Therefore, the expected return of the portfolio is 3.21%, the variance is 0.060167% and the standard deviation is 2.45%.
Answer:
Step-by-step explanation:
To calculate the expected return on the portfolio, we need to take the weighted average of the individual stock returns based on their proportions in the portfolio. The expected return on the portfolio can be calculated as follows:
Expected return on portfolio = (weight of stock X × expected return on stock X) + (weight of stock Y × expected return on stock Y) + (weight of stock Z × expected return on stock Z)
Expected return on portfolio = (0.35 × 9%) + (0.20 × 15%) + (0.45 × 12%)
Expected return on portfolio = 3.15% + 3.00% + 5.40%
Expected return on portfolio = 11.55%
To calculate the variance and standard deviation of the portfolio, we need to use the formula that takes into account the individual stock variances, covariances, and the weights of the stocks in the portfolio. Assuming the covariances between the stocks are zero, we can use the following formulas:
Portfolio variance = (wX^2 * σX^2) + (wY^2 * σY^2) + (wZ^2 * σZ^2) + 2(wX * wY * σXY) + 2(wX * wZ * σXZ) + 2(wY * wZ * σYZ)
Portfolio standard deviation = sqrt(portfolio variance)
where wX, wY, and wZ are the weights of stocks X, Y, and Z in the portfolio respectively, σX, σY, and σZ are the standard deviations of returns on stocks X, Y, and Z respectively, and σXY, σXZ, and σYZ are the covariances between the returns on stocks X and Y, X and Z, and Y and Z respectively.
Since we assume the covariances between the stocks are zero, we can simplify the formulas as follows:
Portfolio variance = (wX^2 * σX^2) + (wY^2 * σY^2) + (wZ^2 * σZ^2)
Portfolio standard deviation = sqrt[(wX^2 * σX^2) + (wY^2 * σY^2) + (wZ^2 * σZ^2)]
Substituting the values, we get:
Portfolio variance = (0.35^2 * 0.09) + (0.20^2 * 0.15) + (0.45^2 * 0.12)
Portfolio variance = 0.0036475
Portfolio standard deviation = sqrt[(0.35^2 * 0.09) + (0.20^2 * 0.15) + (0.45^2 * 0.12)]
Portfolio standard deviation = sqrt(0.0036475)
Portfolio standard deviation = 0.06035
Therefore, the expected return on the portfolio is 11.55%, the portfolio variance is 0.0036475, and the portfolio standard deviation is 0.06035.
14thousands+46hundreds+13tens+9 is what number?
Answer:
18,739
Step-by-step explanation:
14 thousands = 14,000. 46 hundreds = 4,600. 13 tens = 130. 9 = 9. You add them all up and get 18,739.
Select the correct answer. The product of two numbers is 21. If the first number is -3, which equation represents this situation and what is the second number? A. The equation that represents this situation is x − 3 = 21. The second number is 24. B. The equation that represents this situation is 3x = 21. The second number is 7. C. The equation that represents this situation is -3x = 21. The second number is -7. D. The equation that represents this situation is -3 + x = 21. The second number is 18.
Answer:
The product of two numbers is 21.
Step-by-step explanation:
If the first number is -3, which equation represents this situation and what is the second number? A. The equation that represents this situation is x − 3 = 21.
An old building was demolished. 5 dump trucks are used to
transport a total of 2 tons of rubble. How much rubble did each
truck carry?
Kenisha packs 3 crates of merchandise. The crates have masses of 65 kilograms, 72 kilograms, and 42 kilograms. How many kilograms of merchandise does kenisha pack
Answer:
Step-by-step explanation:
answer 42
how to explain but the answe is 42
a number of teenagers are playing with their calculators. one of them multiplies their ages (in whole numbers) together and finds that the product is eighteen million seven hundred and twenty seven thousand two hundred. how many teenagers are in the group
Answer:
Step-by-step explanation:
We need to find the number of teenagers in the group, given that the product of their ages is 18,727,200.
To solve this problem, we need to factorize the given number into its prime factors and then determine how many distinct factors there are.
18,727,200 can be factorized as:
18,727,200 = 2^6 × 3^2 × 5^2 × 13^2
To find the number of distinct factors, we add 1 to each exponent and then multiply them together:
(6+1) × (2+1) × (2+1) × (2+1) = 7 × 3 × 3 × 3 = 189
Therefore, there are 189 factors of 18,727,200, which means that there are 189 ways to multiply whole numbers together to get this number.
Since we want to find the number of teenagers in the group, we need to look for combinations of factors that result in whole numbers for the ages. We can start by dividing the total number of factors by 2 (since we are looking for pairs of factors) and then slowly increase the divisor until we find the smallest number that results in a whole number.
189 ÷ 2 = 94.5 (not a whole number)
189 ÷ 3 = 63 (not a whole number)
189 ÷ 4 = 47.25 (not a whole number)
189 ÷ 5 = 37.8 (not a whole number)
189 ÷ 6 = 31.5 (not a whole number)
189 ÷ 7 = 27 (a whole number)
Therefore, there are 27 pairs of factors that result in whole numbers for the ages. Each pair corresponds to a group of teenagers, and since each group has the same number of teenagers, there are 27 teenagers in the group.
How many thousands are in 200,000
There are 200 thousands in 200,000.
Find the area of the shaded sector of the circle
Answer:
32.67 square meters
Step-by-step explanation:
finding the area of the shaded region.
area of sector = (θ/360°) x πr²
where "θ" is the central angle of the sector in degrees, "r" is the radius of the sector, and π is a mathematical constant approximately equal to 3.14.
Substituting the given values into the formula, we get:
area of sector = (60°/360°) x π(14m)²
area of sector = (1/6) x 3.14 x 196m²
area of sector = 32.67m² (rounded to two decimal places)
Therefore, the area of the section is 32.67 square meters