All categories

3 years ago

Pls tell me the answer with an explanation how you got it!

Mathematics

1 answer:

Flura [38]3 years ago

8 0

Answer:

25 degrees

Step-by-step explanation:

40 + 50 = 90

2 x 25 = 5

You might be interested in

Suppose we want to estimate the average weight of an adult male in Mexico. We draw a random sample of 2,000 men from a populatio

LenKa [72]

Answer:

1.- CI = 94% ( μ₀ - 1,04 < x < μ₀ + 1,04 )

2.- CI = 98 % ( μ₀ - 2,05 < x < μ₀ + 2,05 )

3.- CI = 96 % ( μ₀ - 1,75 < x < μ₀ + 1,75 )

Step-by-step explanation:

Sample size n = 3000000

Sample mean x = 200

Standard deviation s = 30

From z-table values of z(c):

CI 94 % Confidencial level α = 6 % α = 0,06 z(c) = 1,55

CI 98 % Confidencial level α = 2 % α = 0,02 z(c) = 2,05

CI 96 % Confidencial level α = 4 % α = 0,04 z(c) = 1,75

MOE = z(c) * σ/√n

1.-MOE = 1,55* 30 / √2000 MOE = 1,04

2.-MOE = 2,05*30/√2000 MOE = 1,38

3.-MOE = 1,75*30/√2000 MOE = 1,17

Then CI

1.- CI = 94 % ( μ₀ - MOE < x < μ₀ - MOE )

CI = ( μ₀ - 1,04 < x < μ₀ + 1,04 )

2.-CI = 98 %

CI = ( μ₀ - 2,05 < x < μ₀ + 2,05 )

3.- CI = 96 %

CI = ( μ₀ - 1,75 < x < μ₀ + 1,75 )

7 0

3 years ago

What is the solution to this system of leaner equation <br> 2x + y = 1 <br> 3x - y = -6

scZoUnD [109]

Answer:

Solution :

{x,y} = {3,7}

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

A prehistoric site was discovered. The site is a nearly perfect circle

Artemon [7]

Answer:

whats the question

Step-by-step explanation:

5 0

3 years ago

Which number below best represents a credit of $17.16?

PIT_PIT [208]

B. 17.16 represents a credit of $17.16; "credits" mean that you're receiving something, so it's added. A is incorrect because it shows the money being taken away and that isn't what a credit does. C and D aren't even the same amount of money in the question, so they aren't your answer either.

3 0

3 years ago

Read 2 more answers

Use cylindrical coordinates. find the volume of the solid that lies within both the cylinder x2 y2 = 9 and the sphere x2 y2 z2 =

marissa [1.9K]

In Cartesian coordinates, the region is given by $-3\le x\le3$ , $-\sqrt{9-x^2}\le y\le\sqrt{9-x^2}$ , and $-\sqrt{16-x^2-y^2}\le z\le\sqrt{16-x^2-y^2}$ . Converting to cylindrical coordinates, using

$\begin{cases}\mathbf x(r,\theta,\zeta)=r\cos\theta\\\mathbf y(r,\theta,\zeta)=r\sin\theta\\\mathbf z(r,\theta,\zeta)=\zeta\end{cases}$

we get a Jacobian determinant of $r$ , and the region is given in cylindrical coordinates by $0\le\theta\le2\pi$ , $0\le r\le3$ , and $-\sqrt{16-r^2}\le z\le\sqrt{16-r^2}$ .

The volume is then

$\displaystyle\int_{\theta=0}^{\theta=2\pi}\int_{r=0}^{r=3}\int_{z=-\sqrt{16-r^2}}^{z=\sqrt{16-r^2}}r\,\mathrm dz\,\mathrm dr\,\mathrm d\theta=\dfrac{4(64-7\sqrt7)\pi}3$

6 0

3 years ago