Answers
Answer:
B
Step-by-step explanation:
It comes from straightforward application of the integral for path length.
[tex]\displaystyle S=\int{}\,ds=\int{\sqrt{dx^2+dy^2}}=\int_0^{2\pi}{\sqrt{(1-\sin(t))^2+(1-\cos(t))^2}}\,dt\\\\=\int_0^{2\pi}{\sqrt{(1-2\sin(t)+\sin^2(t))+(1-2\cos(t)+\cos(t)^2)}}\,dt\\\\=\int_0^{2\pi}{\sqrt{(2+\sin^2(t)+\cos^2(t))-2\sin(t)-2\cos(t)}}\,dt\\\\=\boxed{\int_0^{2\pi}{\sqrt{3-2\sin(t)-2\cos(t)}}\,dt}\qquad\text{matches B}[/tex]
Related Questions
Select all tables that represent a proportional relationship between x and Y.
X 0 1 2 3
y 0 9 18 27
x 0 3 6 9
y 021 42 63
X 0 8 16 24
y 1 17 33 49
x 0 5 10 15
y 2 17 32 47
PLEASEEE HELPPP!!!!
Answers
Solve graphically x=-3 y=5
Answers
solve the equation and justify each step using the algebraic properties of equality
Answers
Answer:
-5
Step-by-step explanation:
3x=-13-2
3x=-15
x=-5
There are 10 marbles in the bag below. 7 of the marbles are red, 1 is purple and 2 are green. A marble is picked at random from the bag. Work out the probability that the marble is red, P(red), as a) a decimal. b) a percentage.
Answers
Answer: a) 0.7
b) 70%
Step-by-step explanation:
a) There are 10 marbles.The red marbles are 7
so that 7/10
then change to decimal 7/10=0.7
b) if we get percentage *100
so, 7÷10*100%
70%
360t + 10t 3 - 120t 2
Answers
Answer:
10t(6-t)^2
Step-by-step explanation:
Answer:
Pretty sure its 10t (t-6)²
Step-by-step explanation:
Which of the following is not a solution of the equation below (3x(x-1)(x-2)=0
Answers
What is the options?
h(1)=-35
h(n)=h(n-1)*2
h(3)=
Answers
Answer:
h(3)=140
Step-by-step explanation:
Given:
n=3
h=35
h(3)=h(3-1)*2
=35*2*2
=140
Answer:
h(3)=-140
Step-by-step explanation:
2 2.3.5 Quiz: Using Properties to Add and Subtract Rational Numbers
Question 4 of 5
Which expression would be easier to simplify if you used the associative
property to change the grouping?
A. 0.85+[0.15+(-1/3)
B. 1+[3/4+(-1/4]
C. [(-1/3)+(-2/3)+(-4/5)
D. (160+40)+27
Answers
Answer:
I hit my toe
Step-by-step explain
. 0.85+[0.15+(-1/3)
guys help right now i need a answer
Answers
Answer:
Step-by-step explanation:
Four quadrants:
Quadrant I (right side, above the x-axis to the right of the y-axis).
Quadrant II (left side, above the x-axis to the to the left of the y-axis).
Quadrant III ( left side , below the x-axis to the left of the y-axis).
Quadrant IV (right side, below the x-axis to the right of the y-axis
Y
l
II (-x, y) l I (x, y)
x l x
III l IV
(-x, -y) l (x, -y)
l
Y
Now you can answer the questions by locating the point and explain.
the chart below shows the coordinates of the dragon's head when it is its original size.
Answers
I'm sorry, I can't see the chart so I can't answer this question.
Which expression has a solution of 12, if m = 7?
5 - m
m + 5
m - 5
m + 7
Answers
Answer:i think it wuld be m+5
Step-by-step explanation:
Find the critical value zα/2 that corresponds to a 83% confidence level
Answers
The critical value zα/2 that corresponds to a 83% confidence level is 1.37.
The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:
[tex]z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean,\sigma=standard\ deviation[/tex]
Given that the confidence level (C) = 83% = 0.83
α = 1 - C = 0.17
α/2 = 0.17/2 = 0.085
The z score of α/2 corresponds with the z score of 0.415 (0.5 - 0.085) which is equal to 1.37
Find out more at: https://brainly.com/question/15016913
HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZ
for the function f defined by f(x)=3x^3-2x+5 find f(-x), -f(x), and -f(-x)
Answers
Answer:
Make sure that all words are spelled correctly.
How can magnets cause objects to have kinetic energy? How can magnets cause objects to move? Use and bold these key words in your answer. convert, kinetic energy, potential energy, magnets
Answers
Answer:
If there is a system of magnets being held in place, there is potential energy
Step-by-step explanation:
pretty sure you've seen this answer before but 8ts right so just go along with it ok bud?
Answer:
Okay
Magnets work because opposite poles are attracted to each other, this is how the objects move (depending on how the atoms and how to iron is, it could be much stronger or weaker)
If there is a system of magnets there is potential energy, when you let go of the magnets (or when they stick together) it converts the potential energy to kinetic energy because it moved.
Step-by-step explanation:
state whether slope will be positive, negative, or zero.
(-2,3) (-1,-3)
Answers
Answer:
the Slope is 0 because the x value is going up as the y stays the same
Brainliest please
This diagram shows a pre image triangle ABC and its image triangle A'B'C.,after a series of transformations. Select from the drop down menu to correctly complete the transformations. NEED HELP ASAP!!!!
Answers
Answer:
First blank: translated
Second blank: Reflected across the x axis
Third blank: Rigid (if that's an answer choice)
Fourth blank: congruent
Step-by-step explanation:
9. Modeling Real Life A machine that
makes toy spinners is in operation for
8 hours each day. The machine makes
7,829 toy spinners in 1 day. About how many toy spinners does the machine make each hour?
Answers
Answer:
8 hours = 7,829 toy spinners
24 hours= x toy spinner
7829 / 24 x 8
2069 for one hour
Step-by-step explanation:
so your answer is this hope this helps good luck if it does not i am sorry
The number of toy spinners the machine make each hour is 2068.
Given that, the machine makes 7,829 toy spinners in 1 day.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Here,
8 hours = 7,829 toy spinners
24 hours= x toy spinner
Now, number of toys in one hour = 7829/(24×8)
= 2069.66
= 2069 per one hour
Therefore, the number of toy spinners the machine make each hour is 2069.
To learn more about the unitary method visit:
brainly.com/question/22056199.
#SPJ5
Need help please I’m stuck
Answers
Answer:
I am Assuming 100p=1 euro
half of 96 is 48 so you have 48 1 euro coins.
you also have 48 50p coins which equals 24 euros
48+24=72
Solve for x
2(x−1)=5(x−2)
Give your answer as an improper fraction in its simplest form.
Answers
Step-by-step explanation:
2(x-1)=5(x-2)
=2x-2=5x-10
=2x-5x= -10+2
= -3x= -8
=
[tex] \frac{8}{3} [/tex]
Answer:
[tex]x \: = \: \frac{8}{3} [/tex]Step-by-step explanation:
♤ Given Question:-To solve for x♤ Given Equation:-2(x−1)=5(x−2)♤ Solution:-2(x - 1) = 5(x - 2)
=> 2 × x - 2 × 1 = 5 × x - 5 × 2 [Distributive property]
=> 2x - 2 = 5x - 10 [Simplification]
=> 5x - 2x = 10 - 2 [Bringing like terms on one side]
=> 3x = 8 [Simplification]
[tex] = > x = \frac{8}{3}(ans) [/tex]
[In simplest form of improper fraction]
i really need help no clue what it is
Answers
Answer:
Step-by-step explanation:
Well, according to this graph,
The greatest growth should be between the years 3 and 4. the reason is because if you count (under the students column) how many numbers are increasing between the numbers. In this case, the largest (increasing) number of students was between 25 and 33. (i counted 7)
So, the completed sentence should be:
(please note the parenthesis is the drop down.. I am unsure of the answer choices in the drop downs though so they might be differently worded. this is just what i have gathered.)
The greatest growth was between years (3) and (4). The growth between those years was about (7 students). In the last dropdown it may just be 7 but in word form.
A school carnival sold 24 early-admission tickets and 72 regular tickets. What percentage of the tickets sold were early-admission tickets? Write your answer using a percent sign (%).
Answers
Answer:
25%
Step-by-step explanation:
add both kinds of tickets first to get the total
24 early admission + 72 regular = 96 total tickets
then divide 24 early tickets by 96 total tickets to get the decimal, then multiply by 100 to get percent
[tex]\frac{24}{96} = 0.25 * 100 = 25[/tex]%
Refer to the map shown in exercise.2. If m.angle 1 os 64° what is the measure of angle.2?
Answers
we need to see α photo in order to answer the question.
Answer:180
Step-by-step explanation:
PLS HELP WITH ALGEBRA TWO
Answers
Answer:
Answers in Explanation
Step-by-step explanation:
8x^3 + 2x^2 - 20x - 5
(8x^3 + 2x^2) + (-20x - 5)
2x^2 (4x + 1) + (-5) (4x+1)
(2x^2 - 5) (4x + 1)
Pleased help math experts urgent
Answers
Answer:
1. get closer to 0
2. symmetrical across y=-x
3. x cannot be equal to 0
4. decreasing if x<0, increasing if x>0
Step-by-step explanation:
yes
Determine whether its a..
a. sss
b.sas
c.asa
e.hypotenuse leg
meanings for the terms above
s=side
a=angle
Answers
*What is the correct value of b?
~50/100 = b/28
-b=14
-b=20
-b=10
*What is the value of n?
~25/100 = 7/n
-n=28
-n=24
-n=32
Answers
Answer:
-b = 14
-n = 28
Step-by-step explanation:
For b
50/100=b/28 cross-multiply
1400= 100b divide both sides by hundred
-b = 14
For n
25/100= 7/n cross multiply
25n = 700 divide both sides by 25
-n = 28
Membership at the YMCA costs $15 per month plus $80 to sign-up. Blink costs $29 per month but is free
to sign-up. After how many months will the two gyms cost the same amount?
Answers
Let months be x
[tex]\\ \sf\longmapsto 80+15x=29x[/tex]
[tex]\\ \sf\longmapsto 29x-15x=80[/tex]
[tex]\\ \sf\longmapsto 14x=80[/tex]
[tex]\\ \sf\longmapsto x\approx 6months[/tex]
Answer:
43 months in ymca including the $80 sign up fee is equal to 25 months in blink
Step-by-step explanation:
$725 divided by $29 =25 months
$ 725 - $80 sign up = $645 .
Now we divide this by $15.
$645 divided by 15= 43 months
I’m in 7th grade and don’t know this. Dndjdjdjdjsnnsndxj
Answers
Answer:
Step-by-step explanation:
Let's go:
Right: have an angle measuring 90°.
Equilateral: all 3 sides of triangle are same value.
Obtuse: have an angle measuring > 90°
Scalene: all 3 sides of triangle are different value.
In this case:
The Green one is Scalene and obtuse.
The red one is equilateral.
I hope I've helped you.
Red- equilateral(all angles are the same
Angle ABC And BCA a are complementary angle ABC is 85° if angle BCA is named as 3b -7 what could be the value of b?
Answers
Therefore,
angle ABC + angle BCA = 90
But, angle BCA = 3b - 7
and angle ABC = 85
Therefore,
85 + 3b - 7 = 90
3b - 7 = 5
3b = 12
b = 4
Craig has a job waiting tables where he earns $3.45 per hour plus tips. Craig earned $73.68 in tips during his shift yesterday.
If x represents the number of hours Craig worked yesterday, which of the following equations can be used to find the amount of money Craig earned yesterday?
A. y = 3.45x - 73.68
B. y = 73.68x + 3.45
C. y = 3.45x + 73.68
D. y = 73.68x - 3.45