optimal solution is arrived with value of variables as :
x1=0.9091,x2=1.8182,x3=0,x4=0,x5=0,x6=0
minimize cost:
z=2x₁+3x₂+5x₃+6x₄+8x₅+8x₆=2x
subject to:
20x₁+30x₂+40x₃+40x₄+45x₅+30x₆ ≥70 : amount of protein
50x₁+30x₂+20x₃+25x₄+50x₅+20x₆ ≥100 : amount of carbohydrate
4x₁+9x₂+11x₃+10x₄+9x₅+10x₆ ≥20 : amount of fat
where x₁, x₂, x₃, x₄, x₅, x₆ are units of 6 foods
solution using Simplex method:
After introducing artificial variables:
Min Z=2x₁+3x₂+5x₃+6x₄+8x₅+8x₆+0S₁+0S₂+0S₃+MA₁+MA₂+MA₃
subject to
20x₁+30x₂+40x₃+40x₄+45x₅+30x₆-S₁+A₁ ≥ 70
50x₁+30x₂+20x₃+25x₄+50x₅+20x₆-S₂+A₂≥ 100
4x₁+9x₂+11x₃+10x₄+9x₅+10x₆-S₃+A₃=20
and x₁,x₂,x₃,x₄,x₅,x₆,A₁,A₂,A₃≥0
Refer to the image for Z
Since all Zj-Cj≤0
Hence, optimal solution is arrived with value of variables as :
x1=0.9091,x2=1.8182,x3=0,x4=0,x5=0,x6=0
Min Z=7.2727
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Consider a propeller driven aircraft in forward flight at a speed of 150 mph: The propeller is set up with an advance ratio such that the propeller disc average flow speed is 170 mph: The propeller diameter is 6 ft The aircratt flies at sea level: Calculate the thrust of the propeller: b. Calculate the induced velocity Calculate the velocity in the downstream far field away from the propeller disc Calculate the power absorbed by the fluid (energy added per unit mass mass flow rate) Calculate the propeller power (thrust flight speed) f. If propeller efficiency is defined by the ratio of e to d, calculate the propeller etficiency:
a) The thrust of the propeller is 23,834 lbf
b) The induced velocity is 8.44 mph
c) The velocity in the downstream far field away from the propeller disc is 161.56 mph
d) The power absorbed by the fluid is 42.7 hp
e) the propeller power (thrust flight speed) is 4,844.08 hp
f) The propeller efficiency is 113.6%
a)The thrust of the propeller can be calculated using the equation,
Thrust = 2πρR^2V^2, where ρ is the air density, R is the propeller radius, and V is the average velocity of the propeller disc. For sea level at a speed of 150 mph, the air density is about 0.002377 slugs/ft^3.
the thrust of the propeller can be calculated as: Thrust = 2π x 0.002377 x (6 ft)^2 x (170 mph)^2 = 23,834 lbf
b)The induced velocity can be calculated using the equation v_ind = (1/2) V ∞ [1–(V_∞/V_tip)^2]^(1/2), where V_∞ is the free stream velocity and V_tip is the tip velocity of the propeller. For the given problem, the induced velocity can be calculated as: v_ind = (1/2) x 150 mph x [1–(150 mph/170 mph)^2]^(1/2) = 8.44 mph
c) The velocity in the downstream far field can be calculated using the equation V_∞ = V_tip – v_ind, where V_tip is the tip velocity of the propeller and v_ind is the induced velocity. For the given problem, the velocity in the downstream far field can be calculated as: V_∞ = 170 mph – 8.44 mph = 161.56 mph
d)The power absorbed by the fluid can be calculated using the equation P_fluid = (1/2) ρ V_ind^3 A_disc, where ρ is the air density, V_ind is the induced velocity, and A_disc is the area of the propeller disc. For the given problem, the power absorbed by the fluid can be calculated as P_fluid = (1/2) x 0.002377 x (8.44 mph)^3 x (π x (6 ft)^2) = 42.7 hp
e)The power absorbed by the propeller can be calculated using the equation P_prop = T x V, where T is the thrust of the propeller and V is the flight speed of the aircraft. For the given problem, the power absorbed by the propeller can be calculated as: P_prop = 23,834 lbf x 150 mph = 3,575,500 ft-lbf/s = 4,844.08 hp
f)The efficiency of the propeller can be calculated using the equation η = P_prop/P_fluid, where P_prop is the power absorbed by the propeller and P_fluid is the power absorbed by the fluid. For the given problem, the efficiency of the propeller can be calculated as: η = 4,844.08 hp/42.7 hp = 113.6%
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y is directly proportional to 2².
Using the graph below, work out the constant of
proportionality.
S
4
in m
-2
12
From the figure the constant of proportionality when y is directly proportional to x² is 1/2
How to find the constant of proportionalityThe ratio between two quantities that are directly proportional is the constant of proportionality.
When two quantities grow and reduce at the same rate, they are directly proportional.
The constant of proportionality is solved by taking points from the graph\
using point (2, 2)
y is directly proportional to x² writing in equation form
y α x²
y = kx²
k = y / x²
plugging in values from the graph
k = 2 / 2²
k = 2 / 4
k = 1/2
The constant of proportionality is equal to 1/2
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[(-2)³ x (126 ÷ 7)] +46
Answer:-98
Step-by-step explanation:
bc i said so ;)
Answer:
-98 is my answer
which of the following pairs of variables is likely to have a negative correlation? check all that apply.
The two variables to have a negative correlation are x and y.
Negative correlation is the relationship where x grows as y decreases.
Given,
Here, negative correlation is used to describe the relationship between two variables that results in independent variables moving in one direction while dependent variables move in another.
Positive correlation
Positive correlation is when the value of the variable x rises as the value of the variable y rises.
Negative Correlation
Negative correlation is the relationship where x grows as y decreases.
No correlation
No correlation exists between the two variables.
That example, the term "no-correlation" refers to the absence of a connection between two variables.
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The question is improper. Proper question is given below;
What two variables are likely to have a negative correlation
Suppose that the functions r and s are defined for all real numbers x as follows.
r(x)=x+5
s(x) = 4x+2
Write the expressions for (r*s) (x) and (r-s) (x) and evaluate (r+s)(1).
The values of the expression (1) (r*s)(x) is 4x²+22x+10 (2) (r-s)(x) is -3x +3 (3) (r+s)(1) is 5x +7
How to determine the values of the expressions?The given parameters that will help us to calculate the values are
r(x) = x+5
s(x) = 4x +2
(1) r*s(x) will be
(x+5)(4x+2)
Opening the brackets we have
4x²+2x+20x+10
= 4x²+22x+10
(2) (r-5)(x)
Putting the values of r and s
(x+5)- (4x+2)
Open the brackets to have
x+5-4x-2
Collecting like terms to get
-3x+3
(3) (r+s)(x)
By substitution we have
x+5+4x+2
⇒5x +7
In conclusion the values of the expressions are (1) (r*s)(x) is 4x²+22x+10 (2) (r-s)(x) is -3x +3 (3) (r+s)(1) is 5x +7
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Emilio buys liter bottles of shampoo when the store has the promotion shown.
Buy 2 liters,
get 30% off
3rd liter.
Write an expression in two different ways to represent the total cost of 3 liters of shampoo. Let L be
The two different expressions to represent the total cost of 3 liters of shampoo where L is the regular price of a liter bottle are;
2L + (L - 0.3L)2.7LHow to write discount expression?Let
Regular price of a liter bottle = LNumber of shampoos Emilio bought = 3 litersDiscount = 30% off the price of 3rd literTotal cost = Regular price of 2 liters of shampoo + discounted price of the 3rd liter
= (L × 2) + (L - 30% of L)
= 2L + (L - 0.3L)
= 2L + (0.7L)
Total cost = 2.7L
In conclusion, the expressions which can be used to represent the situation are;
2L + (L - 0.3L)
2.7L
Complete question:
Emilio buys liter bottles of shampoo when the store has the promotion shown. Write an expression in two different ways to represent the total cost 0f 3 liters of shampoo. Let L be the regular price of a liter bottle.
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How many line segments does a triangle have?
There are three line segments in a triangle. Since there are three vertices in a triangle, they form three line segments.
What is a line segment?A line segment is formed by two endpoints. It has a certain length or distance between its endpoints.A line segment is represented by a line without arrows over two ends of a line segment.Example: A line segment formed by the two points A and B is represented as [tex]\overline{AB}[/tex].Line segments in a triangle:Consider a triangle ABC. It has three vertices A, B, and C.
And it has three angles ∠A, ∠B, and ∠C.
So, the line segments formed by these three vertices are [tex]\overline{AB}[/tex], [tex]\overline{BC}[/tex], and [tex]\overline{CA}[/tex].
So, a closed figure will form by connecting these three vertices. That closed figure is said to be a triangle.
Therefore, there are 3 line segments in a triangle.
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what degrees of freedom should be used to conduct a chi-squared test of independence using this table?
The degrees of freedom (df): For a chi-square test of independence, the df is (number of variable 1 groups − 1) * (number of variable 2 groups − 1).
Under the null speculation and sure conditions (mentioned below), the check statistic follows a Chi-Square distribution with stages of freedom identical to ( r − 1 ) ( c − 1 ) , wherein is the quantity of rows and is the quantity of columns.
The quantity of levels of freedom in a chi-rectangular goodness-of-healthy check is the quantity of classes minus the quantity of parameters anticipated. The quantity of levels of freedom in a chi-rectangular goodness-of-healthy check is the quantity of classes minus the quantity of parameters anticipated minus one.
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Complete question:
what degrees of freedom should be used to conduct a chi-squared test of independence using this table?
if angle poa is a right angle and if measure of angle coa is three times as large as measure angle poc.
The angles COA and POC are 22.5 and 67.5 degrees respectively as POA is a right angled triangle.
POA is a right angle so it is 90 degrees.
POC +COA = 90 .....(1)
Also, POC is 3 times as large as COA.
Let's take COA, "x"
POC = 3x
Substituting the values in equation (1) as follows:
x + 3x = 90
4x = 90
x= 22.5
Therefore,
COA = 22.5°
POC = 22.5*3 = 67.5°
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HURRY PLEASE I NEED HELP!!
Given the equation 8m − 15 = 5m + 63 and the possible solution set S: {3, 26, 78, 126}: Part A: Determine which integer(s) in the solution set makes the equation false. Show all work. (8 points) Part B: Use a complete sentence to explain how you were able to determine which values make the equation false. (4 points)
At m = 26 only the equation will be true, And the values 3, 78, and 126 will not satisfy the equation and make the equation false.
Substitution Method:The substitution method is a quick and easy way to algebraically solve a set of linear equations and determine the variables' solutions.
Finding the value of the x-variable in terms of the y-variable from the first equation and then substituting or replacing the value of the x-variable in the second equation.
Here we have
8m − 15 = 5m + 63
=> 3m = 78
And set of possible solution, S = {3, 26, 78, 126}
Here we use the Substitution method to find at what value the equation will be false
At m = 3
=> 3m = 78
=> 3(3) = 78 [ which is not true]
At m = 26
=> 3(26) = 78 [ which is true ]
At m = 78
=> 3(78) = 78 [ which is not true ]
At m = 126
=> 3(126) = 78 [ which is not true ]
From the above calculations,
At m = 26 only the equation will be true, And the values 3, 78, and 126 will not satisfy the equation and make the equation false.
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Use the given data to find the equation of the regression line. Examine the scatterplot and identify a characteristic of the data that is ignored by the regression line.
x y
9 7.38
9 6.75
12 13.08
9 7.42
11 7.56
13 8.53
7 5.93
4 5.33
12 8.1
6 6.46
5 5.44
According to the data provided, the regression line equation is given by
y=2.83+0.52x. The non-linear characteristics of data is ignored by the regression line.
What do you mean by regression line?The most popular statistical method for simulating a link between two sets of variables is linear regression. As a result, a linear regression equation that can be applied to data is created.
What is the formula to calculate the line regression?The required formula is:
[tex]y= a + b_{yx}x[/tex]
[tex]b_{yx} = \frac {n \sum xy - \sum x \sum y}{n \sum x ^ {2} - (\sum x) ^ {2}}[/tex]
[tex]a = \bar y - b_{yx} \bar x[/tex]
[tex]\bar x = 8.81 \\\bar y = 7.45\\\sum x ^ {2} =947\\\sum xy = 770.95[/tex]
[tex]b_{yx} = 0.52[/tex]
[tex]a=2.83[/tex]
y=2.83+0.52x .
In scatter plot, Non-linear characteristics is ignored by the regression line.
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marthina is practicing in a 6-day cross country biking challenge.she biked for 48,60,49,54and 47 miles on the first five days.how many miles does she need to bike on the last day so thst her average (mean) is 54 miles per day
She needs to bike for 66 miles on the last day so that her mean is 54 miles per day.
What is mean?Mean, in terms of math, is the total added values of all the data in a set divided by the number of data in the set.
To calculate the miles Marthina needs to bike so that her mean is 54 mile per day, we use the formula below.
Formula:
M = ∑x/N................... Equation 1Where:
M = Mean∑x = Sum of all the distance she bikedN = Number of daysLet y be the miles she biked for the last day.
From the question,
Given:
∑x = 48+60+49+54+47+y = 258+yN = 6 daysM = 54 miles per daySubstitute these values into equation 1 and solve for y
54 = (258+y)/6258+y = 54×6258+y = 324y = 324-258y = 66 milesHence, she needs to bike for 66 miles on the last day.
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given the following data points: and the linear least squares model we want to use the normal equation to solve the above linear least squares problem, which is equivalent to solving a linear system of equations with the form: what would be the right hand side of this linear system?
The properties of the unique solution of the system AX=B depend on the matrix of the system. That is, it depends only on the coefficients on the left side. RHS configuration is not the issue.
The method of least squares is an important statistical technique practiced to find the regression line or the best fit line for a particular pattern. This procedure is described by an equation with specific parameters. The method of least squares is used liberally in analysis and regression. In regression analysis, this method is a standard approach to approximating a system of equations using more equations than unknowns.
The least squares method actually defines a solution to minimize the resulting sum of squares or error for each equation. Find the formula for the sum of squared errors to help find the variation in the observed data.
The least squares method is often used in data fitting. A best fit result is assumed to reduce the sum of squared errors or residuals reported as the difference between the observed or experimental values and the corresponding fitted values in the model.
Linear System of Equation:
A system of linear equations (or linear system) is a collection of one or more linear equations involving the same variables.
A linear system of three variables determines the collection of levels. Intersection is the solution.
For example,
3x + 2y -z =1 , 2x - 2y + 4z =-2
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Based on your answer to part (b), choose what the administrator can conclude, at the 0.05 level of significance. O Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. So, there is enough evidence to conclude that the mean distance hiked by each visitor is now less than 25 kilometers. O Since the p-value is less than (or equal to) the level of significance, the null hypothesis is not rejected. So, there is not enough evidence to conclude that the mean distance hiked by each visitor is now less than 25 kilometers. O Since the p-value is greater than the level of significance, the null hypothesis is rejected. So, there is enough evidence to conclude that the mean distance hiked by each visitor is now less than 25 kilometers. O Since the p-value is greater than the level of significance, the null hypothesis is not rejected. So, there is not enough evidence to conclude that the mean distance hiked by each visitor is now less than 25 kilometers.
The evidence suggests that the average distance hiked by each visitor has decreased to less than 25 kilometers, so the null hypothesis is rejected.
The p-value is the probability of getting a test statistic result at least as extreme as the one observed, given that the null hypothesis is true. If the p-value is less than the chosen level of significance (which is 0.05 in this case), then the null hypothesis is rejected. In this case, since the p-value is less than 0.05, the null hypothesis is rejected. This means that there is enough evidence to conclude that the mean distance hiked by each visitor is now less than 25 kilometers.
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47. Suppose you're the administrative assistant to the president of a corporation
that employs 425 people. Your boss asks you to organize all employees into
groups of 25 people each, which will meet once a month to discuss safety in
the workplace. How many groups will there be?
48. As part of your job you spend time each day contacting former customers.
During one week, you contacted 15 people on Monday, 12 on Tuesday, 14 on
Wednesday, 11 on Thursday, and 13 on Friday. What is the average number of
customers contacted each day? Which averaging method did you use?
49. A fund-raising company is putting together a student kit of candy bars for a
school to use in its annual support campaign. To maximize sales, the company
will put more of the most popular candy bar sold in an average day in each kit.
The company's research shows that of the five most popular candies, local
vending machines sell 100 of Candy A, 14 of Candy B, 50 of Candy C, 6 of
Candy D, and 45 of Candy E on an average day. Which candy on average is
Please answer all three questions thanks
Answer:
47. 18
48. 13
49. Candy A
Step-by-step explanation:
47. To find the number of groups of 25 people, you can divide the total number of employees by the size of each group. In this case, you would divide 425 employees by 25 people per group to get 17 groups. However, since you can't have a fraction of a group, you would need to round up to the nearest whole number. In this case, you would have 18 groups of 25 people.
48. he average number of customers contacted each day can be calculated by adding the total number of customers contacted during the week and dividing by the number of days in the week. In this case, the total number of customers contacted during the week is 15 + 12 + 14 + 11 + 13 = 65. Dividing this by the number of days in the week, which is 5, gives an average of 13 customers per day.
The method used to calculate the average in this case is the mean, which is the sum of all the values divided by the number of values. The mean is the most commonly used measure of central tendency and is a good choice for finding the average when the data is evenly distributed and there are no extreme values (outliers).
49. the question is cut off but if its ....the most popular and should be included in the most number of kits?
Candy A is the most popular candy, as it is sold in the greatest quantity on an average day. It should be included in the most number of kits in order to maximize sales.
What is the greatest common factor of the following numbers? 16, 24, 32, 40 A. 4 B. 8 C 2 D. 16
Answer:
b
Step-by-step explanation:
The factors of 16 are: 1, 2, 4, 8, 16
The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24
The factors of 32 are: 1, 2, 4, 8, 16, 32
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40
Then the greatest common factor is 8
-11+2/3x(-12)+4÷1/8=
Answer:
13
Step-by-step explanation:
-11+2/3x(-12)+4/1/8 Identify the sign
-11-\\\2/3x12+4/1/8 multiplying and inverting
-11-2/3x12+4x8 Simplify
-11 -2x4+4x8
-11-8+32
13
If 3/4x-2=1 what is the value of 3x-4?
By solving a linear equation, it can be calculated that the value of 3x - 4 is 8
What is linear equation?
At first it is important to know about equation
Equation shows the equality between two algebraic expressions by connecting the two algebraic expressions by an equal to sign.
A one degree equation is known as linear equation.
The given linear equation is
[tex]\frac{3}{4}x - 2 = 1\\\frac{3}{4}x = 1 + 2\\\frac{3}{4}x = 3\\x = \frac{3 \times 4}{3}\\x = 4\\[/tex]
Value of 3x - 4 = [tex]3 \times 4 - 4 \\[/tex]
= 12 - 4
= 8
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Find the exact value of cosec 30^0 + cosec 60^0 + cosec 90^0
The exact value of the expression is 4.15
What is a trigonometric expression?
The trigonometric functions in mathematics are real functions that connect the right-angled triangle's angle to the ratios of its two side lengths. They are extensively employed in all fields of geometry-related study, including geodesy, solid mechanics, celestial mechanics, and many others.
We are given an expression
cosec 30^0 + cosec 60^0 + cosec 90^0
We know that cosec x= 1/sinx
Substituting this in the above equation we get
1/sin30^0 + 1/sin60^0 + 1/sin90^0
Now we know from the trigonometric table
sin30^0 = 1/2
sin60^0 = [tex]\frac{\sqrt{3} }{2}[/tex]
Sin90^0 = 1
Substituting this values in the equation we get
2+ [tex]\frac{2}{\sqrt{3} }[/tex]+1
3+1.15
= 4.15
The exact value of the expression is 4.15
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An employee receives a salary increase of 8% at the end of each full year working with a company. If the employee receives an initial salary of $35,400, which equation represents the employee’s salary, S, after t years since the employee began working with the company?
The equation that represents the employee’s salary, S, after t years since the employee began working with the company is S(t) = 35400 * (1.08)^t
How to determine the equation that represents the employee’s salaryFrom the question, we have the following parameters that can be used in our computation:
Initial salary = 35400
Raise = 8%
Number of years = t
The equation that represents the employee’s salary is calculated as
Salary = Initial salary * (1 + raise)^Number of years
Substitute the known values in the above equation, so, we have the following representation
Salary = 35400 * (1 + 8%)^t
So, we have
S(t) = 35400 * (1.08)^t
Hence, the equation is S(t) = 35400 * (1.08)^t
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consider the following data for a dependent variable y and two independent variables, x1 and x2 . x 1 x 2 y 30 12 94 46 11 109 24 17 112 51 16 178 41 6 94 51 19 176 74 7 171 37 13 117 60 13 142 77 16 212 round your all answers to two decimal places. enter negative values as negative numbers, if necessary.
The correlation coefficient for x1 and y is 0.91, The correlation coefficient for x2 and y is 0.55 and The correlation coefficient for x1 and x2 is -0.33
Calculating the Correlation Coefficient for x1 and y:
Step 1: Calculate the mean of x1: Mean of x1 = (30 + 46 + 24 + 51 + 41 + 51 + 74 + 37 + 60 + 77) / 10 Mean of x1 = 47.1
Step 2: Calculate the mean of y: Mean of y = (94 + 109 + 112 + 178 + 94 + 176 + 171 + 117 + 142 + 212) / 10 Mean of y = 134.1
Step 3: Calculate the standard deviation of x1: Standard Deviation of x1 = √(((30 - 47.1)2 + (46 - 47.1)2 + (24 - 47.1)2 + (51 - 47.1)2 + (41 - 47.1)2 + (51 - 47.1)2 + (74 - 47.1)2 + (37 - 47.1)2 + (60 - 47.1)2 + (77 - 47.1)2) / 10)
Standard Deviation of x1 = 17.43
Step 4: Calculate the standard deviation of y: Standard Deviation of y = √(((94 - 134.1)2 + (109 - 134.1)2 + (112 - 134.1)2 + (178 - 134.1)2 + (94 - 134.1)2 + (176 - 134.1)2 + (171 - 134.1)2 + (117 - 134.1)2 + (142 - 134.1)2 + (212 - 134.1)2) / 10)
Standard Deviation of y = 38.82
Step 5: Calculate the covariance of x1 and y: Covariance of x1 and y = ((30 - 47.1) × (94 - 134.1) + (46 - 47.1) × (109 - 134.1) + (24 - 47.1) × (112 - 134.1) + (51 - 47.1) × (178 - 134.1) + (41 - 47.1) × (94 - 134.1) + (51 - 47.1) × (176 - 134.1) + (74 - 47.1) × (171 - 134.1) + (37 - 47.1) × (117 - 134.1) + (60 - 47.1) × (142 - 134.1) + (77 - 47.1) × (212 - 134.1)) / 10
Covariance of x1 and y = 393.3
Step 6: Calculate the correlation coefficient of x1 and y:
Correlation Coefficient of x1 and y = Covariance of x1 and y / (Standard Deviation of x1 × Standard Deviation of y) = 393.3 / (17.43 × 38.82)
Correlation Coefficient of x1 and y = 0.91
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consider the following data for a dependent variable y and two independent variables, x1 and x2. x 1 x 2 y 30 12 94 46 11 109 24 17 112 51 16 178 41 6 94 51 19 176 74 7 171 37 13 117 60 13 142 77 16 212 round your all answers to two decimal places. enter negative values as negative numbers, if necessary. Show the correlation coefficient for each variable
PLEASE HELP IVE BEEN STUCK ON THIS FOR SO LONG
An odd degree polynomial with a negative leading coefficient would have endpoint behavior of "as x approaches -∞, y approaches ∞ and as x approaches ∞, y approaches -∞.
What is a polynomial?
A polynomial is a mathematical statement made up of coefficients and indeterminates that uses only the operations addition, subtraction, multiplication, and powers of positive integers of the variables. x² - 4x + 7 is an illustration of a polynomial with a single indeterminate x.
The leading coefficient and the degree of the monomial n have an impact on the final behavior.
The function behaves the same at both "ends" when n is even. They both either approach + ∞ or they both approach depending on the sign of the leading coefficient.
The behaviour of the function at both "endpoints" is the reverse when n is odd. Which one is +∞and which one is depends on the sign of the leading coefficient.
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The wait time for two different rides at a fair are listed in the table. If there are 210 people in line for the merry-go-round, how long can you expect to wait to ride the merry-go-round?
27. 5 minutes is the amount of time I would have to wait to be able to use the merry go round
How to solve for the timeFor the merry go round the wait time for 84 people is said to be 11 minutes.
If 84 persons are to wait for = 11 minutes
How many minutes would you have to wait with 210 people in line?
We would have to cross multiply
84 = 11
210 = ?
84 * ? = 11 * 210
84 ? = 2310
? = 2310 / 84
= 27.5
Hence if 210 are line, the number of minutes that I would have to wait would be 27. 5 minutes on the line before it would get to my turn.
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The wait time for two different rides at a fair are listed in the table. If there are 210 people in line for the merry-go-round, how long can you expect to wait to ride the merry-go-round?
Ride
Tilt-a-whirl
Wait Times
6 minutes for 54 people
Merry-go-round
11 minutes for 84 people in
line
I just need the answer for part a, please help! You just need a graphing calculator and with the data table, find the logistic regression from my understanding
The logarithmic function that models the data is given as follows:
y = 1.0994 + 5.6403 ln(x).
Why is the logarithmic function used, and how to define it?The logarithmic function is used as from the table, the data has a initial fast increase and then the rate of the increase decreases, as the graph reaches it's horizontal asymptote.
The function is defined using a logarithmic regression calculator, inserting the points of the data-set.
From the table, the points are given as follows:
(0, 0.5), (1, 1.4), (2, 4.1), (3, 7.6), (4, 9.1), (5, 10).
(as x represents the number of years after 2005).
Inserting these points into the logarithmic regression calculator, the equation is given as follows:
y = 1.0994 + 5.6403 ln(x).
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Which expression is equivalent to the following complex fraction?
(1 - 1/x)/2
Equivalent expression is (x-1)/2x for ((1 -1/x)/2), So Option 1 is correct.
If two expressions can be written similarly or can be combined into a single, simpler phrase, then those two expressions are comparable. Additionally, you can tell if two expressions are equal if you substitute values for the variable in both and they get the same result. The numerator and denominator of equivalent fractions can be written by multiplying or dividing them both by the same value.
This is the rationale for why these fractions simplify to the same number. Equivalent ratios are two ratios that have identical values. Divide or multiply both amounts by the same number to arrive at an equivalent ratio. The method is the same as determining equivalent fractions.
Here expression is ((1 -1/x)/2)
take x as lcm then (x-1)/2x
correct option is (A).
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Correct Question:
Which expression is equivalent to the following complex fraction?
(1-1/x)/2
A) x-1/2x
B) -1/2
C) 2x-2/x
D) 2x/x-1
help meeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeeeeeee
Answer:
3K
Step-by-step explanation:
pls help help help i need help !!!!!!!!
The length of the unknown side is 6 units
How to determine the length of the unknown sides?From the question, we have the following parameters that can be used in our computation:
Triangles ABC and QRS
This triangles are similar triangles
This means that
AB : AC= QR : QS
Substitute the known values in the above equation, so, we have the following representation
5 : 3 = 10 : QS
Multiply the first ratio by 2
So, we have
10 : 6 = 10 : QS
By comparison, we have
QS = 6
Hence, the length is 6 units
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Find the dimensions of the rectangle with the greatest area that can be built so the base of the rectangle is on the x-axis between 0 and 1 (0 less than equal to x less than equal to 1) and one corner of the rectangle is on the curve, y = x^3 . What is the area of this rectangle?
The area of this rectangle is 0.105C that can be calculated by implementing the dimensions of length and breadth.
The area of rectangle involves the length and breadth.
Suppose length of rectangle be a,
Height of rectangle (1-a)^3
Area, A= a*(1-a)^3
dA/da = -3a(1-a)^2+(1-a)^3 = 0
a = 1, 0.25
Thus, Area (max) = 0.25*0.75^3 = 0.105
In this case
Height of rectangle C(1-a)^3
Area, A= Ca*(1-a)^3
dA/da = C[-3a(1-a)^2+(1-a)^3] = 0
a = 1, 0.25
Thus, Area (max) = 0.25*0.75^3*C = 0.105C
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the set of hexadecimal digits consisting of from one through four digits can be thought of as broken up into disjoint subsets: s1, s2, and so forth, where each sk consists of the strings with k hexadecimal digits. there are $$ incorrect: your answer is incorrect. strings in s1, $$ incorrect: your answer is incorrect. strings in s2, and so forth. thus, by the addition correct: your answer is correct. rule, the total number of strings is .'
It is possible to think of the set of hexadecimal digits, which includes one through four digits, as being divided into disjoint subsets: s, Sa, and so forth, strings in S,, strings in fourth, where each S, is made up of the strings with k hexadecimal digits. There are v rules, there are S2 total strings, and so on.
What is the hexadecimal system of numbers?Hexadecimal number system is one of many sorts of ways for representing numbers that has a base-16 value. Hexadecimal numerals therefore contain 16 symbols or digital values, namely 0 through 1, 2, 3, 4, 5, 6, 7, 8, 9, A–F. Single bit representations of 10, 11, 12, 13, 14, and 15 are A, B, C, D, E, and F, respectively.
How is hexadecimal pronounced?It can occasionally be spoken as "hex." There are only 16 used to represent hexadecimal integers. A, B, C, D, E, and F are the following values or symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.
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simplify 1+1
[tex] \frac{1}{(1 - { \sqrt{ 5} )}^{2 } } + \frac{1}{(1 + \sqrt{ {5)}^{2} } } [/tex]
simplify
The value of the surd when simplified is 1/6
How to simplify the surd?We should recall that surd is the square root of all irrational numbers, simplification involves making it more simpler.
The given question is [tex]\frac{1}{(1-\sqrt{5 })^{2} } + \frac{1}{(1+\sqrt{5} )^{2} }[/tex]
We shall be simplifying the expression in parts
From difference of two squares
(1)/[(1-√5)(1+√5) = 1+5 = 1/6
The second part is 1/[(1+√5)(1+√5) = 1/(1+√10+5)
= 1/(6+√10)
Joining the two parts to get
1/6 + 1/(6+√10
Simplifying the fractions
(√10+1)/(6+√10)
= 1/6
Therefore the value of the expression is 1/6
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