1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erica [24]
3 years ago
9

Can you answer this math homework? Please!

Mathematics
1 answer:
Amanda [17]3 years ago
8 0

(1) second option

(2) fourth option

You might be interested in
I need the answer fast pls
trasher [3.6K]

Answer:

so one would be percent of each class wearing sunglasses to make it easier what your picking is questions based on math

3 0
3 years ago
HELP!!!! PLEASE!!! <br><br><br><br> dnsjnfjsfisd
QveST [7]

Answer:

yeah this is a no no

Step-by-step explanation:

4 0
3 years ago
Let C be the curve of intersection of the parabolic cylinder x^2 = 2y, and the surface 3z = xy. Find the exact length of C from
Maslowich
I've attached a plot of the intersection (highlighted in red) between the parabolic cylinder (orange) and the hyperbolic paraboloid (blue).

The arc length can be computed with a line integral, but first we'll need a parameterization for C. This is easy enough to do. First fix any one variable. For convenience, choose x.

Now, x^2=2y\implies y=\dfrac{x^2}2, and 3z=xy\implies z=\dfrac{x^3}6. The intersection is thus parameterized by the vector-valued function

\mathbf r(x)=\left\langle x,\dfrac{x^2}2,\dfrac{x^3}6\right\rangle

where 0\le x\le 4. The arc length is computed with the integral

\displaystyle\int_C\mathrm dS=\int_0^4\|\mathbf r'(x)\|\,\mathrm dx=\int_0^4\sqrt{x^2+\dfrac{x^4}4+\dfrac{x^6}{36}}\,\mathrm dx

Some rewriting:

\sqrt{x^2+\dfrac{x^4}4+\dfrac{x^6}{36}}=\sqrt{\dfrac{x^2}{36}}\sqrt{x^4+9x^2+36}=\dfrac x6\sqrt{x^4+9x^2+36}

Complete the square to get

x^4+9x^2+36=\left(x^2+\dfrac92\right)^2+\dfrac{63}4

So in the integral, you can substitute y=x^2+\dfrac92 to get

\displaystyle\frac16\int_0^4x\sqrt{\left(x^2+\frac92\right)^2+\frac{63}4}\,\mathrm dx=\frac1{12}\int_{9/2}^{41/2}\sqrt{y^2+\frac{63}4}\,\mathrm dy

Next substitute y=\dfrac{\sqrt{63}}2\tan z, so that the integral becomes

\displaystyle\frac1{12}\int_{9/2}^{41/2}\sqrt{y^2+\frac{63}4}\,\mathrm dy=\frac{21}{16}\int_{\arctan(3/\sqrt7)}^{\arctan(41/(3\sqrt7))}\sec^3z\,\mathrm dz

This is a fairly standard integral (it even has its own Wiki page, if you're not familiar with the derivation):

\displaystyle\int\sec^3z\,\mathrm dz=\frac12\sec z\tan z+\frac12\ln|\sec x+\tan x|+C

So the arc length is

\displaystyle\frac{21}{32}\left(\sec z\tan z+\ln|\sec x+\tan x|\right)\bigg|_{z=\arctan(3/\sqrt7)}^{z=\arctan(41/(3\sqrt7))}=\frac{21}{32}\ln\left(\frac{41+4\sqrt{109}}{21}\right)+\frac{41\sqrt{109}}{24}-\frac98

4 0
4 years ago
30 POINTS!!!!! URGENT!
vekshin1

Step-by-step explanation:

Average daily balance: Add all balances up and divide by the number of days.

157.63*9+239.98*1+239.98*4+180.38*1+180.38*9+190.57*1+190.57*6 gives us our total of 5756.36, and there were 9+1+4+1+9+1+6=31 days, so 5756.36/31 gives us our average of 185.69, or the fourth option

Daily interest rate: 24.99/365, as a percent, which is the first option

Finance charge: This is the cost of borrowing, and does not seem to be given, so we can take it to be the lowest amount, or the third value

New account balance: Again, this does not seem to be given, but the only option remaining is the second one

3 0
4 years ago
Read 2 more answers
Plssssssss Help!!!!!
mote1985 [20]

Answer:

I personally think one of them would be 1234

Step-by-step explanation:

Well, the line would be linear if you were to put it on a graph so ye

3 0
3 years ago
Other questions:
  • Which answer describes the types of number that are dense? ​
    5·1 answer
  • What two numbers does square root 128 lie between
    10·1 answer
  • Which of the equations below represents a line parallel to the x-axis
    14·1 answer
  • Kent worked in the housewares section of a department store this year he set a record high for vacuum sales with 567 vacuum sold
    14·1 answer
  • Find the value of the variable which satisfies the equation by trying the values given in bracket: m/2= 5 (2 , 5 , 10 , 15)
    14·2 answers
  • A rectangular pyramid has a volume of 1,512 inches cubed, a height of 12 in., and a base length of 21 in. What is the width of i
    13·2 answers
  • HELP DUE IN 30 MINS!
    5·1 answer
  • Can someone help me? It would mean the world if u helped me have a nice day! &lt;3
    7·2 answers
  • State if this triangle is a right triangle.
    11·1 answer
  • The perimeter of a rectangular parking lot is 368 m.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!