I'll only look at (37) here, since
• (38) was addressed in 24438105
• (39) was addressed in 24434477
• (40) and (41) were both addressed in 24434541
In both parts, we're considering the line integral
[tex]\displaystyle \int_C (3x^2-8y^2)\,\mathrm dx + (4y-6xy)\,\mathrm dy[/tex]
and I assume C has a positive orientation in both cases
(a) It looks like the region has the curves y = x and y = x ² as its boundary***, so that the interior of C is the set D given by
[tex]D = \left\{(x,y) \mid 0\le x\le1 \text{ and }x^2\le y\le x\right\}[/tex]
• Compute the line integral directly by splitting up C into two component curves,
C₁ : x = t and y = t ² with 0 ≤ t ≤ 1
C₂ : x = 1 - t and y = 1 - t with 0 ≤ t ≤ 1
Then
[tex]\displaystyle \int_C = \int_{C_1} + \int_{C_2} \\\\ = \int_0^1 \left((3t^2-8t^4)+(4t^2-6t^3)(2t))\right)\,\mathrm dt \\+ \int_0^1 \left((-5(1-t)^2)(-1)+(4(1-t)-6(1-t)^2)(-1)\right)\,\mathrm dt \\\\ = \int_0^1 (7-18t+14t^2+8t^3-20t^4)\,\mathrm dt = \boxed{\frac23}[/tex]
*** Obviously this interpretation is incorrect if the solution is supposed to be 3/2, so make the appropriate adjustment when you work this out for yourself.
• Compute the same integral using Green's theorem:
[tex]\displaystyle \int_C (3x^2-8y^2)\,\mathrm dx + (4y-6xy)\,\mathrm dy = \iint_D \frac{\partial(4y-6xy)}{\partial x} - \frac{\partial(3x^2-8y^2)}{\partial y}\,\mathrm dx\,\mathrm dy \\\\ = \int_0^1\int_{x^2}^x 10y\,\mathrm dy\,\mathrm dx = \boxed{\frac23}[/tex]
(b) C is the boundary of the region
[tex]D = \left\{(x,y) \mid 0\le x\le 1\text{ and }0\le y\le1-x\right\}[/tex]
• Compute the line integral directly, splitting up C into 3 components,
C₁ : x = t and y = 0 with 0 ≤ t ≤ 1
C₂ : x = 1 - t and y = t with 0 ≤ t ≤ 1
C₃ : x = 0 and y = 1 - t with 0 ≤ t ≤ 1
Then
[tex]\displaystyle \int_C = \int_{C_1} + \int_{C_2} + \int_{C_3} \\\\ = \int_0^1 3t^2\,\mathrm dt + \int_0^1 (11t^2+4t-3)\,\mathrm dt + \int_0^1(4t-4)\,\mathrm dt \\\\ = \int_0^1 (14t^2+8t-7)\,\mathrm dt = \boxed{\frac53}[/tex]
• Using Green's theorem:
[tex]\displaystyle \int_C (3x^2-8y^2)\,\mathrm dx + (4y-6xy)\,\mathrm dx = \int_0^1\int_0^{1-x}10y\,\mathrm dy\,\mathrm dx = \boxed{\frac53}[/tex]
CP is equal to 200 SP is equal to 100 find the profit or loss
Answer:
100
Step-by-step explanation:
if SP>CP,
It is profit [SP - CP = Profit]
if CP>SP,
It is loss [CP - SP = Loss]
Here in the question CP>SP so,
loss = CP - SP
=200 - 100
= 100
2. What is the distance between points A and B?
A. -6 units
B. -1 unit
C. 5 units
D. 6 units
Answer:
5 units
Subtract -6 and -1, and you get -5. -5 can't be the answer since we are asked to find the distance, so it is the absolute value of -5, 5.
Answer:
D) 6 units
Explanation:
Point A is 5 units away from 0 (the middle)
Point B is 1 unit away from 0
5 + 1 = 6
Distance between two points cannot be negative
write the decimal values of the digits given in bold : 0.437
please tell step by step explaination
Answer:
na na na na na I don't know
3. What type of angle will the clock show when it is 6:55 pm?
40 Points Please help me
NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!!
At a birthday party, five people are sharing 3/4 of a pan of lasagna. What equal-sized portion of the whole pan will each of the five people receive?
a. Draw a visual model to represent the situation and the solution.
b. Write an equation to represent the situation. Explain your reasoning.
Answer:
see below
Step-by-step explanation:
Take the amount of lasagna and divide by the number of people
3/4 ÷ 5=x
Copy dot flip
3/4* 1/5=x
3/20 each
1/8 times square root of eight =
Answer:
0.35355339059
Step-by-step explanation:
56-x=728+2x what's the answer?
Answer:
56-x=728+2x
1.) rearrange
[tex]56x = 728 + 2x \\ \ - x + 56 = 728 + 2x[/tex]
[tex] - x + 56 = 728 + 2 x \\ \\ - x + 56 = 2x + 728[/tex]
2.)subtract 56 on both side
[tex] - x + 56 = 2x + 728 \\ \ - x + 56 - 56 = 2x + 728 - 56[/tex]
3.) simplify
[tex] - x = 2x + 672[/tex]
4.)Subtract 2 on both sides
[tex] - x = 2x + 672 \\ \\ - x - 2x = 2x + 672 - 2x[/tex]
5.) simplify
[tex] - x - 2x = 2x + 672 - 2x \\ \\ - 3x = 2x + 672 - 2x \\ \\ - 3x = 672[/tex]
6.)divide both sides on the same equation
[tex] - 3x = 672 \\ \\ \frac{ - 3x}{ - 3} = \frac{672}{ - 3} [/tex]
7.) simplify
[tex]x = - 224[/tex]
8.) answer
[tex]x = - 224[/tex]
if u need any help, just let me know
Please Help! Evaluate the function at each specified value of the independent variable and simplify. (If an answer is undefined, enter UNDEFINED.)
g(t) = 5t^2 − 8t + 3
Answer:
Given:
g(t) = 5t² − 8t + 3Find the following
g(2)
g(2) = 5(2²) - 8(2) + 3 = 20 - 16 + 3 = 7g(t - 2)
g(t - 2) = 5(t - 2)² - 8(t - 2) + 3 = 5t² - 20t + 20 - 8t + 16 + 3 = 5t² - 28t + 39g(t) - g(2)
g(t) - g(2) = 5t² − 8t + 3 - 7 = 5t² − 8t - 4g(t)=5t^2-8t+3
[tex]\\ \sf\longmapsto g(2)=5(2)^2-8(2)+3[/tex]
[tex]\\ \sf\longmapsto g(2)=5(4)-16+3[/tex]
[tex]\\ \sf\longmapsto g(2)=20-13[/tex]
[tex]\\ \sf\longmapsto g(2)=7\checkmark[/tex]
And
[tex]\\ \sf\longmapsto g(t-2)=5(t-2)^2-8(t-2)+3[/tex]
[tex]\\ \sf\longmapsto g(t-2)=5(t^2-4t+4)-8t+16+3[/tex]
[tex]\\ \sf\longmapsto g(t-2)=5t^2-20t+20-8t+19[/tex]
[tex]\\ \sf\longmapsto g(t-2)=5t^2-28t+39\checkmark[/tex]
And
[tex]\\ \sf\longmapsto g(t)-g(2)[/tex]
[tex]\\ \sf\longmapsto 5t^2-8t+3-7[/tex]
[tex]\\ \sf\longmapsto 5t^2-8t-4[/tex]
Find three solutions for this linear function and choose the correct graph by clicking on it. F(x) = x + 3
Answer: The picture that shows 0,3 and 0,3.
They are points on the graph that show the function
Step-by-step explanation: I know because I just did this. I passed!!!
Find the distance between the points (3,4) and (6,0).
I
Answer:
first you use distance formula then urr answer will come out....first u try ok.......
Please answer the question above!
Answer:
B) [tex]A=4x+8[/tex]
Step-by-step explanation:
Hi there!
Area of a trapezoid: [tex]A=\displaystyle\frac{1}{2}h(b_1+b_2)[/tex]
⇒ b₁ = x-3
⇒ b₂ = x+7
⇒ h = 4
Plug the given information into the equation:
[tex]A=\displaystyle\frac{1}{2}(4)[(x-3)+(x+7)]\\\\A=\displaystyle\frac{1}{2}(4)(x-3+x+7)\\\\A=2(2x+4)\\\\A=4x+8[/tex]
Therefore, the area of the trapezoid is [tex]4x+8[/tex].
I hope this helps!
Pls Someone Help me Question:make the greatest and smallest 4 digit number by using any one digit twice
= 8,2,7
Answer:
Greatest digit: 8872.
Smallest digit:2278.
9514 1404 393
Answer:
greatest: 8872smallest: 2278Step-by-step explanation:
Greatest
The greatest possible number is created by putting the greatest allowable digit in the space available that has the highest possible place value. Here, the greatest digit is 8, and the highest place value of a 4-digit number is the thousands place: 8000. Once you have filled that place, you can use the digit 8 one more time in the hundreds place: 8800.
Now, the greatest digit available is the digit 7, and the left-most place you can put it is the tens place: 8870. Finally, the only digit and place available are the digit 2 and the ones place.
Your greatest 4-digit number is 8872.
Smallest
To form the smallest number, you use a similar process, filling places in the number from left to right with the smallest allowable digit. The smallest digit, 2, is allowed twice, so the smallest number that can be formed is 2278.
true/false: the vertical axis in a bar chart always shows relative frequencies
Answer:
true
Step-by-step explanation: true
Divide $2604 into a ratio of 2:1.
Answer : 2604 can be divided into 1736 and 868 in the ratio of 2:1.
Step-by-step explanation:
2x + x = 2604
or, 3x = 2604
or, x = 2604/3 = 868
so
2x = 2*868 = 1736
now
x = 868
the sum of 3 and a number
Answer:
the number will vary the answer
Step-by-step explanation:
3×1=3
3×2=6
Which inequality is the same 7 - 2/b ≤ 5/b
Answer:
1. B
2. A
Step-by-step explanation:
Those are the correct answers
A city currently has a population of 8200 people, and is expected to grow by 4%
every year. To the nearest whole person, what is the population expected to be 10
years from now?
The population expected to be 10 years from now is 12,138.
Given that,
The population is 8,200 people.It should be predicted to grow by 4%.Based on the above information,
The population expected to be 10 years from now is
[tex]= Number\ of\ people \times (1+ growth\ rate)^{number\ of\ years}\\\\= 8,200 \times (1 + 0.04)^{10}\\\\[/tex]
= 12,138
Therefore we can conclude that The population expected to be 10 years from now is 12,138.
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Help I'll mark you as brainiest
Answer:
It is a function and 0to^2 shows your function dt.c and 4c-3 shows your function is wrong and the answer is 0 and 31/4 to the power of 25 and shows that the function is 8.
Step-by-step explanation:
jim can solve 4 math problems in 7 minuts. At this rate, about how many math problems can he solve in 25 minuts?
Answer:
14.
JIm can solve 4/7 math problems in a minute. that is the unit rate. how did i get that? 7/7 = 1 and thats what we need for a unit rate, the number one. that means we have to divide 4 by 7 too. therefore, 4/7.
we aren't done. we multiply 4/7 * 25 to find out how many math problems jim can solve in 25 minutes.
about.. 14.29 and we need a whole number since you cant solve a decimal of a math problem so he can solve 14 math problems in 25 minutes.
Step-by-step explanation:
Answer:
43.57
Step-by-step explanation:
divide 4/4 and 7/4 to get the base amount of minutes per question then multiply 1.75 by 25 minutes
If M Need help asap ...................
The measure of angle DAC must be 60 degrees. Since a right angle is 90 degrees, the sum of the degrees of both of the angles must be that amount. If angle BAD is 30 degrees, the measure of angle DAC must be 60 degrees.
What comes next in this sequence? - [ 1, 45, 104, 1034 ] - Please state the pattern and why you chose that answer.
A. 34556
B. 4567
C. 401
D. 54
Answer:
The answer is A. 34556
Step-by-step explanation:
The 5th term of the sequence would be a{5} = 10334.
What is a mathematical function, equation and expression?Sequence : A sequence is defined as an arrangement of numbers in a particular order.
Function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function
Expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators
Equation : A mathematical equation is used to equate two expressions.
Given is the sequence -
1, 45, 104, 1034
We can write the next term as -
a{n} = 10a{n - 1} - 6
So, we can write -
a{5} = 10 x 1034 - 6
a{5} = 10340 - 6
a{5} = 10334
Therefore, the 5th term of the sequence would be a{5} = 10334.
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During a science lab, four-fifths of the class completed the lab and earned a grade of 100. What percent of the class didnt earn a grade of 100?
F. 60%
G. 80%
H. 20%
J.45%
Answer: H. 20%
Step-by-step explanation: if 4/5 got 100 then 80% got 100 so the other 20% did not get a 100
52% of 1000 registered voters intend to vote for Steven Collins for mayor. What is the 95% confidence interval to describe the total percentage of registered voters who intend to vote for Steven Collins?
A. (50.1%, 53.9%)
B. (48%, 56%)
C. (49.9%, 54.1%)
D. (48.9%, 55.1%)
Using the z-distribution, the 95% confidence interval to describe the total percentage of registered voters who intend to vote for Steven Collins is:
D. (48.9%, 55.1%)
What is a confidence interval of proportions?A confidence interval of proportions is given by:
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which:
[tex]\pi[/tex] is the sample proportion.z is the critical value.n is the sample size.In this problem, we have a 95% confidence level, hence[tex]\alpha = 0.95[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so the critical value is z = 1.96.
The other parameters are given as follows:
[tex]\pi = 0.52, n = 1000[/tex]
Hence the bounds of the interval are given by:
[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.52 - 1.96\sqrt{\frac{0.52(0.48)}{1000}} = 0.489[/tex]
[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.52 + 1.96\sqrt{\frac{0.52(0.48)}{1000}} = 0.551[/tex]
As a percentage, option D is correct.
More can be learned about the z-distribution at https://brainly.com/question/25890103
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Mrs. Kaur brought identical gift for her 6 nieces and nephews. She spent a total of $94.20. what was the cost of each gift.
Answer:
$15.7 for each
Step-by-step explanation:
here, peice of 6 gifts= $94.20
now price of each gift= $94.20/6
answer is 15.7 dollars
The area of a rectangle is 44m^2, and the length of the rectangle is 3m less than twice the width. Find the dimensions of the rectangle.
Answer:
the length=8
the rectangle=5.5
Step-by-step explanation:
+)convention:
the lengt=a
the width = b => the area of the rectangle = a.b=44m^2 (1)
+) "the length of the rectangle is 3m less than twice the width"
=> 2b-a = 3 (m)
=> a=2b-3
substitute a for (1), we get
the area of the rectangle = a.b = (2b-3).b=44 m^2
=> 2b^2-3b-44=0
=> b=-4 (wrong)
=> b= 5.5 =the width
the lengt = the area of the rectangle/the width=44/5.5=8 m
A blueprint has a scale of 1cm : 4 feet. On the blueprint, a room is drawn with dimensions 5cm x 2cm.
Find the area of the room (the units of the answer are square feet).
It is a great idea to use a sheet of graph paper to work this problem.
square feet
Answer:
On the blue print, the room will measure 20 by 8 feet
Step-by-step explanation:
The graph of the reciprocal parent function, f(x) = ), is shifted 9 units
down and 11 units to the right to create the graph of g(x). What function is
g(x)?
Answer:
g(x) = [tex]\frac{1}{x+11}-9[/tex] is my choice
Step-by-step explanation:
I. If move right is +x and move down is -y
then f(x) = [tex]\frac{1}{x}[/tex]
+x = 11, -y = -9
so g(x) = [tex]\frac{1}{x+11}-9[/tex]
Hope that help :D
Find the equation (in terms of x) of the line through the points (-3,0) and (4,5)
Step-by-step explanation:
steps are in the picture above.
Note:if you need to ask any question please let me know.If 5cm and 3cm are added to the length and width of a square, the perimeter of the resulting rectangle is between twice and three times the perimeter of the original square. Find the possible lengths of the sides of the original square.
Answer:
The answer is between 2 and 4. 2 and 4 can be included if you are including the twice or three times. If it doesn't include those then it would only be anything inbetween.
Step-by-step explanation:
So to start off I would always give placeholder for all the sides. Lets label it x.
2(x+5) + 2(x+3) < 3(4x)
In the equation above, we created a simple equation with 2 representing 2 sides each and the 3 and 5 plugged in. That all is going to be less than 3 times the original perimeter which is 4x for the 4 sides.
2x + 10 + 2x + 6 < 12x
4x + 16 < 12x
16 < 8x
2 < x
We learn that the original x is greater than 2. We don't say it is equal to since it says between. Which doesn't usually include the number stated.
Now we repeat, just instead of 3 its 2 and instead of less than its greater than.
2x + 10 + 2x + 6 > 8x
4x + 16 > 8x
16 > 4x
4 > x
So your answer is between 2 and 4.
The possible lengths of the sides of the original square (x) any value between 4 cm and 8 cm, inclusive.
Let's denote the side length of the original square as "x" centimeters. The perimeter of the square is 4x.
When 5 cm and 3 cm are added to the length and width of the square, a rectangle with dimensions (x + 5) cm and (x + 3) cm. The perimeter of the rectangle is 2 × (x + 5) + 2 × (x + 3) = 2x + 10 + 2x + 6 = 4x + 16.
According to the given information, the perimeter of the rectangle is between twice and three times the perimeter of the original square:
2 × perimeter of square ≤ perimeter of rectangle ≤ 3 × perimeter of square
Substitute the values:
2 × 4x ≤ 4x + 16 ≤ 3 × 4x
Simplify:
8x ≤ 4x + 16 ≤ 12x
Subtract 4x from all parts:
4x ≤ 16 ≤ 8x
Now, divide all parts by 4:
x ≤ 4 ≤ 2x
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