All categories

2 years ago

Please help me. thank you!

Mathematics

2 answers:

KonstantinChe [14]2 years ago

7 0

Answer:

thanks for the points lol

Step-by-step explanation:

emmainna [20.7K]2 years ago

3 0

Answer:

x= -10

Step-by-step explanation:

You might be interested in

Y=(‑4)*cos(20+3*π/4)

Crazy boy [7]

Answer:

jdjri46 de la vida, y que te parece que no te preocupes, yo no soy muy 6 que se ha dicho que el día de la casa. la primera vez que se le ve 8fifuifiigig que se ha dicho. 800 que se me ocurre que me 6 6 de la vida de los mejores precios y disponibilidad de tiempo. el que se le va a ser la mejor manera de que el juego de la casa de papel,

4 0

2 years ago

Use spherical coordinates to find the volume of the region that lies outside the cone z = p x 2 + y 2 but inside the sphere x 2

Harman [31]

I assume the cone has equation $z=\sqrt{x^2+y^2}$ (i.e. the upper half of the infinite cone given by $z^2=x^2+y^2$ ). Take

$\begin{cases}x=\rho\cos\theta\sin\varphi\\y=\rho\sin\theta\sin\varphi\\z=\rho\cos\varphi\end{cases}\implies\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi$

The volume of the described region (call it $R$ ) is

$\displaystyle\iiint_R\mathrm dx\,\mathrm dy\,\mathrm dz=\int_0^{2\pi}\int_0^{\sqrt2}\int_{\pi/4}^\pi\rho^2\sin\varphi\,\mathrm d\varphi\,\mathrm d\rho\,\mathrm d\theta$

The limits on $\theta$ and $\rho$ should be obvious. The lower limit on $\varphi$ is obtained by first determining the intersection of the cone and sphere lies in the cylinder $x^2+y^2=1$ . The distance between the central axis of the cone and this intersection is 1. The sphere has radius $\sqrt2$ . Then $\varphi$ satisfies

$\sin\varphi=\dfrac1{\sqrt2}\implies\varphi=\dfrac\pi4$

(I've added a picture to better demonstrate this)

Computing the integral is trivial. We have

$\displaystyle2\pi\left(\int_0^{\sqrt2}\rho^2\,\mathrm d\rho\right)\left(\int_{\pi/4}^\pi\sin\varphi\,\mathrm d\varphi\right)=\boxed{\frac43(1+\sqrt2)\pi}$

4 0

2 years ago

Help!! And stop with the links!!!!!

Mice21 [21]

Answer:

3, 5, 2, 1, 4

Step-by-step explanation:

In step 2, parentheses are eliminated: distributive property.

In step 3, x is subtracted: subtraction property.

In step 4, 12 is added: addition property.

In step 5, the equation is divided by 17: division property.

The properties are listed in the order of statements ...

3, 5, 2, 1, 4

7 0

2 years ago

Sheri built a 1/200 scale model of a dam. She used 0.1 cubic meter of plaster. What is the volume of the actual dam in cubic met

Fynjy0 [20]

The correct answer is C) 800,000 cubic meters.

The scale given is for the length, width or height of the model. In order to find the scale for the volume, we would cube this scale, since volume is a cubic measurement:
(1/200)³ = 1/8,000,000

Since the volume of the model is 0.1, we multiply this by 8,000,000 to find the volume of the actual dam:
0.1(8000000) = 800,000

4 0

2 years ago

the product of two consecutive integers is 5402. Build a function that can be used to solve for the integers. whatthose two inte

nasty-shy [4]

Using algebra...
n and n+2 are the integers
n*(n+2)=288
n^2+2n=288
n^2+2n-288=0
288=2*2*2*2*2*3*3=(2*2*2*2)*(2*3*3)=16*18 and 18-16=2
factor
(n+18)(n-16)=0
n+18=0
n=-18
n+2=-16
this is one solution
n-16=0
n=16
n+2=18

this is another solution
as you can see, it's just a matter of factoring
288

using arithmetic...
√288=16.97≈17

16 and 18 are the integers (as well as -16 and -18)

3 0

2 years ago