Answer:
41.8 > 41.08
Step-by-step explanation:
Find the maximum value of s = xy + yz + xz where x+y+z=9.
From the constraint, we have
\(x+y+z=9 \implies z = 9-x-y\)
so that \(s\) depends only on \(x,y\).
\(s = g(x,y) = xy + y(9-x-y) + x(9-x-y) = 9y - y^2 + 9x - x^2 - xy\)
Find the critical points of \(g\).
\(\dfrac{\partial g}{\partial x} = 9 - 2x - y = 0 \implies 2x + y = 9\)
\(\dfrac{\partial g}{\partial y} = 9 - 2y - x = 0\)
Using the given constraint again, we have the condition
\(x+y+z = 2x+y \implies x=z\)
so that
\(x = 9 - x - y \implies y = 9 - 2x\)
and \(s\) depends only on \(x\).
\(s = h(x) = 9(9-2x) - (9-2x)^2 + 9x - x^2 - x(9-2x) = 18x - 3x^2\)
Find the critical points of \(h\).
\(\dfrac{dh}{dx} = 18 - 6x = 0 \implies x=3\)
It follows that \(y = 9-2\cdot3 = 3\) and \(z=3\), so the only critical point of \(s\) is at (3, 3, 3).
Differentiate \(h\) again and check the sign of the second derivative at the critical point.
\(\dfrac{d^2h}{dx^2} = -6 < 0\)
for all \(x\), which indicates a maximum.
We find that
\(\max\left\{xy+yz+xz \mid x+y+z=9\right\} = \boxed{27} \text{ at } (x,y,z) = (3,3,3)\)
The second derivative at the critical point exists
\($\frac{d^{2} h}{d x^{2}}=-6 < 0\) for all x, which suggests a maximum.
How to find the maximum value?Given, the constraint, we have
x + y + z = 9
⇒ z = 9 - x - y
Let s depend only on x, y.
s = g(x, y)
= xy + y(9 - x - y) + x(9 - x - y)
= 9y - y² + 9x - x² - xy
To estimate the critical points of g.
\($&\frac{\partial g}{\partial x}\) = 9 - 2x - y = 0
\($&\frac{\partial g}{\partial y}\) = 9 - 2y - x = 0
Utilizing the given constraint again,
x + y + z = 2x + y
⇒ x = z
x = 9 - x - y
⇒ y = 9 - 2x, and s depends only on x.
s = h(x) = 9(9 - 2x) - (9 - 2x)² + 9x - x² - x(9 - 2x) = 18x - 3x²
To estimate the critical points of h.
\($\frac{d h}{d x}=18-6 x=0\)
⇒ x = 3
It pursues that y = 9 - 2 \(*\) 3 = 3 and z = 3, so the only critical point of s exists at (3, 3, 3).
Differentiate h again and review the sign of the second derivative at the critical point.
\($\frac{d^{2} h}{d x^{2}}=-6 < 0\)
for all x, which suggests a maximum.
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A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet had a mean of 23.2 pounds and a standard deviation of 6.6 pounds. Step 2 of 2 : If a sampling distribution is created using samples of the amounts of weight lost by 65 people on this diet, what would be the standard deviation of the sampling distribution of sample means
Answer:
The standard deviation of the sampling distribution of sample means would be 0.8186.
Step-by-step explanation:
We are given that
Mean of population=23.2 pounds
Standard deviation of population=6.6 pounds
n=65
We have to find the standard deviation of the sampling distribution of sample means.
We know that standard deviation of the sampling distribution of sample means
=\(\frac{\sigma}{\sqrt{n}}\)
Using the formula
The standard deviation of the sampling distribution of sample means
=\(\frac{6.6}{\sqrt{65}}\)
\(=0.8186\)
Hence, the standard deviation of the sampling distribution of sample means would be 0.8186.
14:56 as a simplified ratio
Answer:
1:4
Step-by-step explanation:
To represent 14:56 as a simplified ratio, we need to reduce it by finding the GCF (greatest common factor) and dividing it by both terms.
The GCF of 14 & 56 is 14.
14 / 14 = 1
56 / 14 = 4
Thus we are left with our new simplified ratio, 1:4.
ASAP!!! NEED AN ANSWER
In this budget scenario, use 15 per hour as the current wage for 40 hour work weeks. Hint: There are 52 weeks in a year, and 12 months in a year.
1. What is the gross yearly income?
2. What is the gross monthly income using this pay rate?
1)Gross Yearly Income = Hourly Wage × Hours per Week × Weeks in a Year
Gross Yearly Income = $15/hour × 40 hours/week × 52 weeks/year
Gross Yearly Income = $31,200
2)Gross Monthly Income = Gross Yearly Income / Months in a Year
Gross Monthly Income = $31,200 / 12 months
Gross Monthly Income ≈ $2,600
1 1/5- 1/3
AS FRACTION
Answer:
-2/15
this should work
Step-by-step explanation:
Answer:
13/15
Step-by-step explanation:
1 1/5 - 1/3 =
= 1 + 1/5 - 1/3
= 5/5 + 1/5 - 1/3
= 6/5 - 1/3
= 18/15 - 5/15
= 13/15
Required Information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Show that if n is an integer and m+ 5 is odd, then n is even using a proof of contraposition. Rank the options below. We can write n = 2k +1 for some integer k. As n + 5 Is two times an integer, it is even. Assume that n is odd. Thus, if n is odd, then 3 + 5 is even. Then, 13 + 5 = (2K+993 +5=863 +1242 +66+6 = 2(4x3 +672 + 3k + 3).
If n is an integer and m + 5 is odd, then n must be even.
To prove this statement using contraposition, we need to show that if n is odd, then m + 5 must be even. Assume that n is odd, which means we can write n = 2k + 1 for some integer k.
Then, we can rewrite m + 5 as (2k + 1) + 5 = 2k + 6 = 2(k + 3), which is even.
Therefore, we have shown that if n is odd, then m + 5 is even.
By contraposition, we can conclude that if m + 5 is odd, then n must be even. Overall, the proof uses the fact that odd + odd = even and even + odd = odd, along with the definition of even and odd integers.
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I need help
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The sequence is decreasing as n increases and sequence converges to the value 0.
The given sequence is defined as aₙ = 1 / (7n + 3).
To determine if the sequence converges or diverges, we need to analyze its behavior as n approaches infinity.
As n increases, the denominator 7n + 3 also increases which means that the values of aₙ will get smaller and smaller, approaching zero as n becomes larger.
The sequence converges to the value 0.
The sequence is decreasing as n increases.
The sequence converges to the value 0.
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What kind of transformation converts the graph of f(x) = 8x² - 7 into the graph of g(x) =
-8x²
+7?
The transformation g(x) = -f(x) converts the graph of
f(x) = 8x^2 - 7 into the graph of g(x) = -8x^2 + 7.
What is transformation of graph?
The technique of altering an existing graph or graphed equation to create a different version of the following graph is known as graph transformation. In particular, the change of algebraic equations, it is a typical kind of algebraic problem.
Given: f(x) = 8x^2 - 7.
We have to find what kind of transformation converts the graph
f(x) = 8x^2 - 7 into the graph of g(x) = -8x^2 + 7.
Let,
f(x) = 8x^2 - 7
Multiply both sides by -1.
⇒ -f(x) = -8x^2 - (-7)
- f(x) = -8x^2 + 7
Since g(x) = -8x^2 + 7
⇒ -f(x) = g(x)
⇒ g(x) = -f(x)
Therefore, the transformation g(x) = -f(x) converts the graph of
f(x) = 8x^2 - 7 into the graph of g(x) = -8x^2 + 7.
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The average lifetime of a set of tires is three years. The manufacturer will replace any set of tires failing within two years of the date of purchase. The lifetime of these tires is known to follow an exponential distribution. What is the probability that the tires will fail within two years of the date of purchase?
Answer:
48.67% probability that the tires will fail within two years of the date of purchase
Step-by-step explanation:
Exponential distribution:
The exponential probability distribution, with mean m, is described by the following equation:
\(f(x) = \mu e^{-\mu x}\)
In which \(\mu = \frac{1}{m}\) is the decay parameter.
The probability that x is lower or equal to a is given by:
\(P(X \leq x) = \int\limits^a_0 {f(x)} \, dx\)
Which has the following solution:
\(P(X \leq x) = 1 - e^{-\mu x}\)
In this question:
\(m = 3, \mu = \frac{1}[3}\)
\(P(X \leq 2) = 1 - e^{-\frac{2}{3}} = 0.4867\)
48.67% probability that the tires will fail within two years of the date of purchase
the following table shows the stock market performance of 40 industries from five sectors of the U.S. economy in a certain year. (Take 5 to be the set or all 40 industries represented in the table)Increased Decreased Unchanged. Totals(X) (Y). (Z)Financials (F). 3. 4. 1. 8 Manufacturing (M). 8. 3. 3. 14Information. 8. 1. 0. 9Technology (T)Health Care (M). 2. 1. 1. 4Utilities (U). 3. 1. 1. 5Totals. 24. 10. 6. 40Use symbols to describe the event that an industry increased in value but was not in the manufacturing sector.a. XⁿMb. XUMc. XⁿMd. XUMe. XⁿMHow many elements are in this event?80
A symbols to describe the event that an industry increased in value but was not in the manufacturing sector: X ∩ M'
The correct answer is an option (b)
Let us assume that event A : an industry increased in value
event B: an industry increased in the manufacturing sector
We need to describe the event that an industry increased in value but was not in the manufacturing sector.
We know that the event A but not B represents the sample values/ outcomes which are in set A but not in set B.
It is represented as A ∩ B' which is equal to A – A ∩ B.
Thus in above case the event that an industry increased in value but was not in the manufacturing sector means A ∩ B'
Here event A = X and B = M
Therefore, the symbolic form of required event = X ∩ M'
The correct answer is an option (b)
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Find the complete question below.
The length of a radius of a circle, measured in feet, is represented by the expression z + 3.6. The diameter of the circle is 11 ft . What is the value of Z? Enter your answer as a decimal or mixed number in simplest form in the box.
z = [ ]
Pls let me know when u got the answer
The figure below is a net for a right rectangular prism.
11 m
13 m
11 m
7 m
11 m
11 m
What is the surface area of the right rectangular prism, in square meters?
The surface area of the right rectangular prism is given as follows:
358 m².
How to obtain the surface area?The surface area of a prism is obtained with the sum of the areas of each part of the prism.
The parts that compose the prism are given as follows:
Two rectangles of dimensions 7 ft and 12 ft.Two rectangles of dimensions 5 ft and 12 ft.Two rectangles of dimensions 5 ft and 7 ft.The area of a rectangle is given by the multiplication of each of the dimensions of the rectangle.
Hence the surface area of the prism is calculated as follows:
S = 2 x (7 x 12 + 5 x 12 + 5 x 7) = 358 m².
(multiplication by two due to the two rectangles with each of the dimensions).
Missing InformationThe prism is given by the image shown at the end of the answer.
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find the coordinates of W' after a 90° counter-clockwise rotation.
Which of the following tables may represent a linear function?
The table that represents a linear equation is the first one, and the line can be:
y = -4x - 1
Which of the following tables can represent a linear function?A general linear function can be written as:
y = a*x + b
Where a is the slope and b is the y-intercept.
Now, notice that if we evaluate the line in x + 1, we will get:
y = a*(x + 1) + b
y = a*x + a + b
So, for an increase of one unit on the variable x, we have a constant increase in the y value.
Now, if you look at the first table, you can see that for each increase of 1 unit on the value of x, the value of y decreases by 4.
So that is the table that can represent a linear function.
And the line is:
y = -4x - 1
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Please help
i need it asap they need to know
How much will it cost a family of four to go to the Alicante Royal Hotel for 2 weeks including return flights and return airport transfers?
there is timetable
Step-by-step explanation:
240.70×4=962.8 (for return)
569×4=2240 (hotel cost)
28×4=112 (return airport)
962.8+2240+112=3,314.8
it will cost $3,314.8 for a family of 4.
he following sequential system implements a pattern detector. (4 points) what pattern does this system detect?
The pattern that this system detects is a four-digit number that is divisible by 3.
1. The system starts by taking an input of a four-digit number.
2. It then checks if the last digit of the input number is divisible by 3.
3. If it is, the system continues to check if the sum of the remaining three digits is divisible by 3.
4. If this turns out to be true, the system will output a signal indicating that the input number is divisible by 3.
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HELP ITS DUE IN 4 MINUTES
Option (a) Tectonic plate movement.
Explanation:- Wegener suggested that perhaps the rotation of the Earth caused the continents to shift towards and apart from each other. (It doesn't.) Today, we know that the continents rest on massive slabs of rock called tectonic plates. The plates are always moving and interacting in a process called plate tectonics.
Like us, mice are warm-blooded creatures. Their bodies must maintain a constant
temperature of 37°C, regardless of the temperature of their environment. Doing so burns
calories. The more severe the temperature difference, the more calories the mouse must
burn to maintain its body temperature. Consulting the research literature, you found the
following model:
C = 0.37219T + 1,560
Where C is the number of calories an idle mouse burns each day and T is the temperature
of its environment in °C. What is the most comfortable temperature for an idle mouse?
(This is the temperature where it burns the least calories per day). How many calories will
it burn each day at that temperature?
At a temperature of 20°C, the mouse would burn approximately 1,567.44 calories each day.
According to the given model C = 0.37219T + 1,560, where C represents the number of calories an idle mouse burns each day and T represents the temperature of its environment in °C.
To find the most comfortable temperature for an idle mouse, we need to determine the temperature at which the mouse burns the least amount of calories per day.
To find this temperature, we can minimize the equation C = 0.37219T + 1,560. To do so, we take the derivative of C with respect to T and set it equal to zero:
dC/dT = 0.37219 = 0
Solving this equation, we find that the derivative is a constant value, indicating that the function C = 0.37219T + 1,560 is a linear equation with a slope of 0.37219. This means that the mouse burns the least calories at any temperature, as the slope is positive.
Therefore, there is no specific "most comfortable" temperature for an idle mouse in terms of minimizing calorie burn. However, if we consider the range of temperatures mice typically encounter, we can find a temperature where the calorie burn is relatively low.
For example, if we take a temperature of 20°C, we can calculate the calorie burn:
C = 0.37219 * 20 + 1,560
C = 7.4438 + 1,560
C ≈ 1,567.4438 calories per day
Therefore, at a temperature of 20°C, the mouse would burn approximately 1,567.44 calories each day.
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What is the distance between the points (-1,4) and (7,4)?
Answer:
8
Step-by-step explanation:
=(7−(−1))2+(4−4)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√
=(8)2+(0)2‾‾‾‾‾‾‾‾‾‾√
=64+0‾‾‾‾‾‾√
=6‾√4
=8
What is the value of the expression 2+32² • (5-1)?
A- 31
B- 32
C- 37
D- 38
Please help, Thanks!
Answer:
Oh okay then so the answer is 38.
If the the price of a pair of shoes is 35$ before tax and the tax is 20% what will the final price of the shoes be
Answer:
$42
Step-by-step explanation:
You want the price with tax of a $35 pair of shoes subject to a 20% tax.
Price with taxThe tax is the cost of the shoes multiplied by the tax rate. The final price is the sum of the cost of the shoes and the tax:
final price = price + price × tax rate
final price = price × (1 + tax rate) = $35 × 1.20 = $42
The final price of the shoes is $42.
Answer:
42$
Step-by-step explanation:
tax increase will be
20% of 35$
= 20/100 × 35
= 7$
Final price = Old price + Tax
= 35 + 7
= 42$
There are 120 cars in a grocery store parking lot. The probability that a car selected at random is white is 1/8. How many of the cars in the parking lot are white?
A. 8
B. 15
C. 30
D. 105
Answer:
B
Step-by-step explanation:
Theoretically it is 120/8=15
Simplify.
(ep)3
3ep
e3p3
e3p
ep3
A landscaping company charges $48 per cubic yard of mulch plus a delivery charge of $28. Find a linear function which computes the total cost C (in dollars) to deliver x cubic yards of mulch.
The linear function for the total cost C is:
\(\text{C} = 28 + 48\text{x}\)What is a function?A function is an expression, rule, or law that defines a relationship between one variable.
Example:
\(f(\text{x}) = 2\text{x} + 1\)
\(f(1) = 2 + 1 = 3\)
\(f(2) = 2 \times 2 + 1 = 4 + 1 = 5\)
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
Charge per cubic yard = $48Delivery charge = $28The total cost for x cubic yards.
\(\bold{C = 28 + 48x}\)
Thus, the function is C = 28 + 48x.
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Jim takes a piece of plywood that is 45 centimeters long and uses a table saw to make a 53-
centimeter cut from corner to opposite corner. What was the width of the piece of plywood?
centimeters
Answer:
28 cm
Step-by-step explanation:
The corner to corner cut is a hypotenuse. We know one leg, 45cm. So use Pythagorean theorem to solve for the other leg. See image.
which is greater [-3.25] or [4.25]
Answer:
4.25
Step-by-step explanation:
The number is bigger in absolute form
A certain type of kickboard scooter comes in silver, red, 2
or purple with wheel sizes of 125 millimeters or 180
millimeters. Determine the total number of color-wheel size combinations.
(This is probability and I’m having such a hell of a time figuring it out pls help)
There are a total of 8 color-wheel size combinations for the kickboard scooter. This means that customers have 8 different options to choose from when selecting the color and wheel size for their scooter.
To determine the total number of color-wheel size combinations for the kickboard scooter, we need to multiply the number of color options by the number of wheel size options.
Given that there are 4 color options (silver, red, blue, and purple) and 2 wheel size options (125mm and 180mm), we can use the multiplication principle to find the total number of combinations:
Total combinations = Number of color options × Number of wheel size options
Total combinations = 4 colors × 2 wheel sizes
Total combinations = 8
There are a total of 8 color-wheel size combinations for the kickboard scooter. This means that customers have 8 different options to choose from when selecting the color and wheel size for their scooter.
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PLS HELP WILL GIVE BRAINLIEST ANSWER
Answer:
56°
Step-by-step explanation:
First, the measure of angle GHE is equal to DFH. This means that you can set 98-6x=63-x, which becomes 5x=35 so x=7. Substitute 7 for x and you'll get DFH =63-7, which is 56.
Review
Bookmark
020-2021 I 2 of 9
v m2
The surface area of the figure is Choose...
Choose...
18 m
637
14
44
13 m
13 m
3,510
Step-by-step explanation:
the surface area is my head times my leg which is basically my eyes
70 POINTSS)NEED FAST ANSWERS)
A square with a side length of 42 meters was created from a square with a side length of 3.5 meters using a scale factor. What is the scale factor?
12:1
24:1
144:1
147:1
Answer:
multiply all of them then add all of them then divide by the lowest number
12:1 is the scale factor
3.5 ÷ 3.5 = 1 and 142 ÷ 3.5 =123.5 so 42:123.5 ratio simplified is 12:1
Looking at the question, to find the scale factor we are going to divide 42 by 3.5 which is 12. To check our work we will do 1 times 3.5 which is 42.
Why is it not 147:1? Well, scale factoring means that in two similar geometric figures, the scale factor is the ratio of their corresponding sides, dividing the two corresponding lengths of the sides will gives the ratio
To check go to:
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Please remember to revise this and make it in your own words if you want! I hope this helps you. -Doodle
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