Evaluate the surface integral SSs (x + y + z)ds, s is the parallelogram with parametric equations x = u + v, y = u - v, z = 1 + 2u +v, 0 <= u <= 2, 0 <= v <=1

Answers

Answer 1

The surface element is

dS = || ∂r/∂u  x  ∂r/dv || du dv

where

r (u, v) = x (u, v) i + y (u, v) j + z (u, v) k

r (u, v) = (u + v) i + (u - v) j + (1 + 2u + v) k

is the vector parameterization for the surface S.

The normal vector to the surface is

r/∂u  x  ∂r/dv

… = (i + j + 2 k)  x  (i - j + k)

… = 3 i + j - 2 k

and has norm

|| ∂r/∂u  x  ∂r/dv || = √(3² + 1² + (-2)²) = √(14)

Now compute the integral:

∫∫ (x + y + z) dS = √(14) ∫₀¹ ∫₀² ((u + v) + (u - v) + (1 + 2u + v)) du dv

… = √(14) ∫₀¹ ∫₀² (3u + v + 1) du dv

… = √(14) ∫₀¹ (3/2 u² + uv + u) |₀² dv

… = √(14) ∫₀¹ (8 + 2v) dv

… = √(14) (8v + 2v²) |₀¹

… = 10 √(14)


Related Questions

Answer the mixed number as a decimal 8 9/10

Answers

Answer:

8.9

Step-by-step explanation:

Answer:

8.9

Step-by-step explanation:

8 9/10=8+9/10

=8/1+9/10

=(8/1×10/10)+9/10

 

=80/10+9/10=8 9/10

We know that

89/10

is the same as

89÷10

Then using

Long Division for 89 divided by 10

gives us

=8.9

what is the geometric mean of 8 and 18

Answers

Answer:

12.

Step-by-step explanation:

The geometric mean of two numbers a and b is sqrt(ab).

Hence, sqrt(8 * 18) = sqrt (144) = 12.

Hope this helped!

The geometric mean of 8 and 18 is 12 which is calculated as the square root of their product, which is 12.

Given two numbers are:

First number = 8

Second number = 18.

To find the geometric mean of two numbers, multiply the numbers together and then take the square root of their product.

Step 1: Find of the two numbers.

Product P: [tex]8 \times 18 = 144[/tex]

Step 2: Find the square root of the product.

Geometric mean = [tex]\sqrt{P}[/tex]

Plugging the value of P gives:

Geometric mean = [tex]\sqrt{144}[/tex]

Take the square root of 144, gives:

Geometric mean = 12.

Therefore, the geometric mean of 8 and 18 is 12.

The geometric mean is often used to find the average growth rate or to compare quantities that vary exponentially.

In summary, the geometric mean of 8 and 18 is calculated as the square root of their product, which is 12.

Learn more about the geometric mean here:

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Whats the inequalitie of X+7<14

Answers

Answer:

x>7

Step-by-step explanation:

After subtracting 7 from each side, you must flips the less than sign to grater than. This would leave you with x>7.

(I'LL GIVE BRAINLIEST AND EXTRA POINTS TO WHO EVER HELPS MEE!!!!!!!!!!! :D)


Solve one and two tenths plus eight and one eighteenth.

A) nine and one twenty eighths
B) nine and three twenty eighths
C) nine and thirty six one hundred eightieths
D) nine and forty six one hundred eightieths

Answers

Answer:

Its D

Step-by-step explanation:

Answer:

It would be 9 13/40

Step-by-step explanation:

Convert any mixed numbers to fractions.

Reduce fractions where possible.

Then your initial equation becomes:

6/5 + 65/8

Applying the fractions formula for addition,

=(6×8)+(65×5)5×8

=48+325/40

=373/40

Simplifying 373/40, the answer is =9 13/40

Question 20 (5 points)
B
1
12

4
15
7
18

0
What vertical line (V) and horizontal line (H) intersect at point B?
OA) V: y = 6; H: x = 1
OB) V: y = 6; H: x = 1
ty

Answers

Answer:

D.) [tex]V:x=1;H:y=6[/tex]

Step-by-step explanation:

The vertical intersection of the point is found by the x value. Starting at the point, move down to find the value of x. The vertical line, value x, is 1.

The horizontal intersection of point B is found by the y value. Start at the given point and move to the left to find the y value. The horizontal line, y, is 6.

[tex](vertical,horizontal)\\\\(x,y)\\\\(1,6)[/tex]

:Done

please help me
evaluate each funtion for the given value
the problem is f (x) = -4x + 7; f (1)

Answers

Answer:Therefore, f(−1)=6.

Step-by-step explanation:

So, if  f(x)=x+7 then f(−1)=(−1)+7

Therefore, f(−1)=6.

Answer:

primeroaend:epr )

Step-by-step explanation:

School fees were decreased from
N25.00 to 20.00 per term.What is
the decrease percent?
(a) 80%
(b) 40%
an
(c) 25%
(d) 24%

(e) 20%​

Answers

Answer:

(e) 20%

Step-by-step explanation:

20/25 = 80/100 = 80% of 25.

If 25/25 = 100%,

then 100% - 80% = 20%

So, the school fees decreased by 20%

which set of ordered pairs in the form of (x, y) does not represent a function of x? (1 point) {(0, 2), (1, –1), (2, 3), (3, –2)} {(0, –2), (1, 1), (2, 3), (3, –2)} {(0, 2), (–1, –1), (2, –3), (3, 2)} {(0, 2), (1, 2), (1, –2), (3, 2)}

Answers

Answer:

(1-,3),(2,2),(3-,3),(2,1),

PLSSS HELPPPPP I WIILLL GIVE BRAINLIEST!!!!!
PLSSS HELPPPPP I WIILLL GIVE BRAINLIEST!!!!!
PLSSS HELPPPPP I WIILLL GIVE BRAINLIEST!!!!!

What does it mean to be a linear function?

Answers

Answer:

It means if you graph the function, the line is straight.

also s p a m

Answer:

Linear functions are those whose graph is a straight line. A linear function has the following form. y = f(x) = a + bx. A linear function has one independent variable and one dependent variable.

Step-by-step explanation:

plzz mark brianliest i needdddd

Evaluate √(13 +2i)^4​

Answers

165 + 52 i

(i think thats the answer im very sorry if i’m wrong)

Answer:

(165 + 52 i)

Step-by-step explanation:

We are given the expression:

√(13+2i)⁴

the square root can also be written as the power of 1/2

[tex](13 + 2i)^{4 * 1/2}[/tex]

(13 + 2i)²

(13)² + (2i)² + 2(13)(2i)                   [(a + b)² = a² + b² + 2ab]

169 + 4(i²) + 52i

169 - 4 + 52i                                [i² = -1]

(165 + 52 i)

Carli and Angela share a cell phone plan and split the bill each month. Last month, their total bill was $109. Carli went over her data limit on her phone, so her share of the bill was $15 more than Angela's to account for the overage charge. Which system of equations represents this situation?
A. c+a=15
c=a+109

B. c+a=109
c=a+15

C. c+a=109
a=c+15

D. c-a=15
c=a+109

Answers

Answer:

C

Step-by-step explanation:

what do rigid motions preserve
a:size and shape
b:shape and direction
c:size and location
d:shape and location

Answers

a, size and shape. hope it’s right and helps ya.

Please help I’ll mark brainliest if u give a small explanation

Answers

Answer:

35

Step-by-step explanation:

yeah becuse 35fttttt

Answer:

45 degrees

Step-by-step explanation:

All triangles have 180 degrees...

So, 85 + 50 = 135

180 - 135 = 45

Hence, the answer is 45 degrees

I hope this helped :)

A .16
B .20
C .29
D .38

Answers

Answer:

a

Step-by-step explanation:

sorry if wrong

can someone please help me please I will give brainliest and please dont google

give an example of an instance when correlation and significance are extremely important when comparing two sets of data ​

Answers

Answer:

Step-by-step explanation:

Correlation occurs when we can observe a trend between the response/dependent variable (y) and the explanatory/independent variable (x).  

When comparing two sets of data, we may observe and use correlation to determine whether or not the data presented if significant or not and whether or not it supports our hypothesis. We may want to see if this is just a fluke and whether or not the trend causes causation.

An example of this would be if we thought that the weight of female mice determines how many kids they have in a month.. Let's say that mice that weigh up to one ounce have 6 baby mice per month.

Let's say that the x variable is the weight which is between 0.25 oz and 1.25 oz and the y-variable is the amount of kids between each month. If another laboratory conducts the same study with the same type of mice with the same weights as us, we would need to determine if there is correlation and if there is causation and try to use this information to determine if both sets of data are significant to our hypothesis.

Answer:

If there is a strong correlation between two variables, it's easy to jump to the conclusion that one causes y and causes X; or that a third factor, Z (or even a whole set of other factors)

Step-by-step explanation:

im confused but i tried

4% as a fraction or mixed number in simplest form

Answers

Answer:

1 /25

Step-by-step explanation:

percent means  

out of 100

 

4

%

=

4

100

as a fraction

To simplify the fraction we require to find a  

common factor

to both 4 and 100 and reduce the fraction by dividing. The common factors are 2 and 4 . Choose the largest, that is 4

4

100

=

4

÷

4

100

÷

4

=

1

25

This calculation is usually set out using  

cancelling

4

100

=

4

1

100

25

=

1

25

in simplest form

A fraction is in  

simplest form

when no other factor but 1 will divide into the numerator/denominator.

A boat rental company offers two different rental packages. The first rental package costs $45, plus $29.50 per hour. The second rental package costs $90, plus $0.70 per hour. Which answer choice best approximates the number of rental hours at which the boating packages cost the same amount?

Answers

Answer:

$90

Step-by-step explanation:

Who does Russian School of Math

Answers

Answer:

Not me

Step-by-step explanation:

Answer:

isn't it the same as American

Step-by-step explanation:

whats is 1+1+3+7+8+33542

Answers

Answer:

33562, You could have used a calculator, or used your head, why

Step-by-step explanation:

Graph this line using the slope and y-intercept:
y=x+9
Click to select points on the graph.

Answers

Points (0,9) and (-1,8)

Solve the system of equations.



−2x+5y =−35
7x+2y =25

Answers

Answer:

The equations have one solution at (5, -5).

Step-by-step explanation:

We are given a system of equations:

[tex]\displaystyle{\left \{ {{-2x+5y=-35} \atop {7x+2y=25}} \right.}[/tex]

This system of equations can be solved in three different ways:

Graphing the equations (method used)Substituting values into the equationsEliminating variables from the equations

Graphing the Equations

We need to solve each equation and place it in slope-intercept form first. Slope-intercept form is [tex]\text{y = mx + b}[/tex].

Equation 1 is [tex]-2x+5y = -35[/tex]. We need to isolate y.

[tex]\displaystyle{-2x + 5y = -35}\\\\5y = 2x - 35\\\\\frac{5y}{5} = \frac{2x - 35}{5}\\\\y = \frac{2}{5}x - 7[/tex]

Equation 1 is now [tex]y=\frac{2}{5}x-7[/tex].

Equation 2 also needs y to be isolated.

[tex]\displaystyle{7x+2y=25}\\\\2y=-7x+25\\\\\frac{2y}{2}=\frac{-7x+25}{2}\\\\y = -\frac{7}{2}x + \frac{25}{2}[/tex]

Equation 2 is now [tex]y=-\frac{7}{2}x+\frac{25}{2}[/tex].

Now, we can graph both of these using a data table and plotting points on the graph. If the two lines intersect at a point, this is a solution for the system of equations.

The table below has unsolved y-values - we need to insert the value of x and solve for y and input these values in the table.

[tex]\begin{array}{|c|c|} \cline{1-2} \textbf{x} & \textbf{y} \\ \cline{1-2} 0 & a \\ \cline{1-2} 1 & b \\ \cline{1-2} 2 & c \\ \cline{1-2} 3 & d \\ \cline{1-2} 4 & e \\ \cline{1-2} 5 & f \\ \cline{1-2} \end{array}[/tex]

[tex]\bullet \ \text{For x = 0,}[/tex]

[tex]\displaystyle{y = \frac{2}{5}(0) - 7}\\\\y = 0 - 7\\\\y = -7[/tex]

[tex]\bullet \ \text{For x = 1,}[/tex]

[tex]\displaystyle{y=\frac{2}{5}(1)-7}\\\\y=\frac{2}{5}-7\\\\y = -\frac{33}{5}[/tex]

[tex]\bullet \ \text{For x = 2,}[/tex]

[tex]\displaystyle{y=\frac{2}{5}(2)-7}\\\\y = \frac{4}{5}-7\\\\y = -\frac{31}{5}[/tex]

[tex]\bullet \ \text{For x = 3,}[/tex]

[tex]\displaystyle{y=\frac{2}{5}(3)-7}\\\\y= \frac{6}{5}-7\\\\y=-\frac{29}{5}[/tex]

[tex]\bullet \ \text{For x = 4,}[/tex]

[tex]\displaystyle{y=\frac{2}{5}(4)-7}\\\\y = \frac{8}{5}-7\\\\y=-\frac{27}{5}[/tex]

[tex]\bullet \ \text{For x = 5,}[/tex]

[tex]\displaystyle{y=\frac{2}{5}(5)-7}\\\\y=2-7\\\\y=-5[/tex]

Now, we can place these values in our table.

[tex]\begin{array}{|c|c|} \cline{1-2} \textbf{x} & \textbf{y} \\ \cline{1-2} 0 & -7 \\ \cline{1-2} 1 & -33/5 \\ \cline{1-2} 2 & -31/5 \\ \cline{1-2} 3 & -29/5 \\ \cline{1-2} 4 & -27/5 \\ \cline{1-2} 5 & -5 \\ \cline{1-2} \end{array}[/tex]

As we can see in our table, the rate of decrease is [tex]-\frac{2}{5}[/tex]. In case we need to determine more values, we can easily either replace x with a new value in the equation or just subtract [tex]-\frac{2}{5}[/tex] from the previous value.

For Equation 2, we need to use the same process. Equation 2 has been resolved to be [tex]y=-\frac{7}{2}x+\frac{25}{2}[/tex]. Therefore, we just use the same process as before to solve for the values.

[tex]\bullet \ \text{For x = 0,}[/tex]

[tex]\displaystyle{y=-\frac{7}{2}(0)+\frac{25}{2}}\\\\y = 0 + \frac{25}{2}\\\\y = \frac{25}{2}[/tex]

[tex]\bullet \ \text{For x = 1,}[/tex]

[tex]\displaystyle{y=-\frac{7}{2}(1)+\frac{25}{2}}\\\\y = -\frac{7}{2} + \frac{25}{2}\\\\y = 9[/tex]

[tex]\bullet \ \text{For x = 2,}[/tex]

[tex]\displaystyle{y=-\frac{7}{2}(2)+\frac{25}{2}}\\\\y = -7+\frac{25}{2}\\\\y = \frac{11}{2}[/tex]

[tex]\bullet \ \text{For x = 3,}[/tex]

[tex]\displaystyle{y=-\frac{7}{2}(3)+\frac{25}{2}}\\\\y = -\frac{21}{2}+\frac{25}{2}\\\\y = 2[/tex]

[tex]\bullet \ \text{For x = 4,}[/tex]

[tex]\displaystyle{y=-\frac{7}{2}(4)+\frac{25}{2}}\\\\y=-14+\frac{25}{2}\\\\y = -\frac{3}{2}[/tex]

[tex]\bullet \ \text{For x = 5,}[/tex]

[tex]\displaystyle{y=-\frac{7}{2}(5)+\frac{25}{2}}\\\\y = -\frac{35}{2}+\frac{25}{2}\\\\y = -5[/tex]

And now, we place these values into the table.

[tex]\begin{array}{|c|c|} \cline{1-2} \textbf{x} & \textbf{y} \\ \cline{1-2} 0 & 25/2 \\ \cline{1-2} 1 & 9 \\ \cline{1-2} 2 & 11/2 \\ \cline{1-2} 3 & 2 \\ \cline{1-2} 4 & -3/2 \\ \cline{1-2} 5 & -5 \\ \cline{1-2} \end{array}[/tex]

When we compare our two tables, we can see that we have one similarity - the points are the same at x = 5.

Equation 1                  Equation 2

[tex]\begin{array}{|c|c|} \cline{1-2} \textbf{x} & \textbf{y} \\ \cline{1-2} 0 & -7 \\ \cline{1-2} 1 & -33/5 \\ \cline{1-2} 2 & -31/5 \\ \cline{1-2} 3 & -29/5 \\ \cline{1-2} 4 & -27/5 \\ \cline{1-2} 5 & -5 \\ \cline{1-2} \end{array}[/tex]                 [tex]\begin{array}{|c|c|} \cline{1-2} \textbf{x} & \textbf{y} \\ \cline{1-2} 0 & 25/2 \\ \cline{1-2} 1 & 9 \\ \cline{1-2} 2 & 11/2 \\ \cline{1-2} 3 & 2 \\ \cline{1-2} 4 & -3/2 \\ \cline{1-2} 5 & -5 \\ \cline{1-2} \end{array}[/tex]

Therefore, using this data, we have one solution at (5, -5).

12x+6=5x how many solutions

Answers

Answer -6/7

Step-by-step explanation:Factor then solve to find the complex solutions.

Answer:

-6/7

Step-by-step explanation:

12x+6=5x

12x-5x=-6

7x=-6

X=-6/7

So the answer is -6/7

What is the equation of the line that passes through the point (-5,-7)and has a slope of 2/5

Answers

Answer:

6.33333 is the answer <3

after 6 hours, a driver had traveled 390 miles. how far had the driver traveled after 4 hours

Answers

Sorry I needed points for an important quiz


give a time where you confused correlation and causation ​

Answers

Answer: A

Step-by-step explanation:

In math

if four out of 10 people vote then in a town with 200,00 people how many will vote

Answers

Answer:

80,000

Step-by-step explanation:

You see all you have to do is find out what 200,000 divided by 10 is : 20,000 then multiply that by four leaving you with a answer of 80,000.

Please help me! I give 30 pts to whoever answers!

Answers

Answer:

4 lollipops and 3 penicls in each bag, so 50 bags

Step-by-step explanation:

I've had to do this one before

I need helppp... Pleasee I will thank you forever!!

Answers

Answer:

$15    

correct if wrong pls

Step-by-step explanation:

42+56+129= 227 total of deposits

17+32+18= 67 total of withdrawals

227-67= 160

160-145=15 answer

correct if wrong but i think thats the answer

Now that you have described several mappings, consider a more general example. Suppose you are given two shapes and you must show that they are congruent using transformations. If the orientation of these two shapes is the same, which type(s) of transformations should you use to show that they are congruent? Why?

Answers

We will use Rotational transformation.

What is congruence transformation ?

A congruence transformation is getting a congruence or similar image after we do any types of the known transformation.

According to the given question

We are given two shapes and we must show that they are congruent using transformations.

We can show the given two shapes are congruent by Reflections, Rotations and Translations.

Here in the given question it is being said that the orientation of these two shapes is the same so we should use rotational transformations.

In rotational transformation we can rotate a figure in clockwise or in anti-clock wise direction. Rotational transformation can be of any degree but in general we rotate it by 90°, 180°, 270° or by 360°.

In rotational transformation object's side length their adjacent angles remain same.

If by doing some degrees of rotational transformation and the figure looks exactly as before it has then it has rotational symmetry for that value of degrees.

Learn more about transformation here :

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Solve.
Question in a triangle, the measure of the first angle is four times the measure of the second
angle. The measure of the third angle is 78° more than the second angle. What is the
measure of the first angle?
17°
95°
68°
43°
< Previous
Next >
No new data to save last checked at 10:16 nm

Answers

Answer:

The first angle is 68.

Step-by-step explanation:

[tex]x_{1}+x_{2}+x_{3}=180\\x_{1} = 4*x_{2}\\x_{3}=x_{2}+ 78\\4*x_{2} + x_{2} + x_{2}+ 78 = 180\\6*x_{2}=102\\x_{2} = 17\\[/tex]

So [tex]x_{1}=68[/tex] and [tex]x_{3}=95[/tex]

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what does corporate culture represent can someone please help me .. will mark brainliest ! How do the sacrifices made by these men and their families demonstrate the importance of courage ande integrity Read the excerpt from "Sinners in the Hands of an Angry God." Yea, God is a great deal more angry with great numbers that are now on earth; yea, doubtless with many that are now in this congregation, who it may be are at ease, than he is with many of those that are now in the flames of hell. What does this excerpt suggest about Edwards's opinion of society? how many total atoms are in 3(SO)4 In Act I, Scene 1 of The Diary of Anne Frank, compare the setting to the action that occurs in the scene. Is the mood of the setting hopeful, frightening, or something else? Compare this to the actions of the scene to discuss how the setting and plot do or do not work together. Use specific quotations and examples in your response of about 150 words. The entrance to the tomb of Rameses II is guarded by 4 massive stone figures, as shown in the picture above. Who/what are the four figures representative of?a.Egyptian godsb.great Egyptian kingsc.Ammit, Anubis, Orisis, and Ramesesd.Rameses IIPlease select the best answer from the choices providedABCD Anyone know the answer? 5 yds=? Ft (PLEASE HELPP!!!) Need answer before 7 minutes passthanksI need an answer that is at least 30 words long The main purpose of Daylight Saving Time is to: how can you test a sample of soil for acidity or alkalinity Which expression has a value of 2?1. 140 divide by 702. 140 divide by 73. 1400 divide by 704. 1400 divide by 7 which is bigger? 2 or -3 please help!! On May 10, 1775, a small group of New Englanders, known as the (12)_____________________________, led by (13)_____________________________ captured the British Fort Ticonderoga at Lake Champlain. Committees of (14)_____________________________ sent out calls for volunteers to join the militias. In June, 1775, redcoats charged militia members on (15)_____________________________. The colonists ran out of (16)_____________________________ and withdrew, but the British suffered heavy losses. The (17)_____________________________ did not consider unfair taxes and regulations sufficient cause for rebellion. The (18)_____________________________, however, were determined to fight for independence. A moving companys moving rates can be represented by the function f(x) = 3x + 400, where x is the number of miles for the move.Another moving companys rates can be represented by the function g(x) = 5x + 200.Which function represents the difference between the moving companies' rates, h(x) = f(x) g(x)?A) h(x) = 2x + 200B) h(x) = 2x + 200C) h(x) = 5x 200D) h(x) = 5x + 600 A ____________ monitor measures the usage of a cloud-based IT resource by a given cloud consumer for billing purposes. Hey guys! Coud u help me out really quick? Just give me what you think the answer is :)) Thanks! I will mark brainliest How can you tell if an equation has more than one solution? One electrician charges a $50 service call fee plus $25 per hour for labor. Another electrician charges a $35 service call fee plus $27.50 perhour for labor. How long would a job take if the total cost for each electrician is the same?A.5 hoursB.6hoursC.7 hoursD.8 hours Which of the following tables can be generated from the equation y = 2x + 1?a: x y2 13 24 35 4b: x y-4 1-2 -10 -32 -5c: x y1 32 53 74 9d: x y0 31 52 73 9...