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3 years ago

Hi! I hope everyone has a great day! But can someone help me with this question? ☺️

Mathematics

1 answer:

yuradex [85]3 years ago

5 0

Answer:

We have the same problem

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The base of a solid in the region bounded by the graphs of y=e^-xy=0, and x=0, and x=1. cross sections of the solid perpendicula

svlad2 [7]

The diameter of each semicircular cross-section is given by the vertical distance between the curves $y=e^{-x}$ and $y=0$ , which is just $e^{-x}$ .

Given a semicircle with diameter $d$ , its area is $\dfrac{\pi d^2}8$ , so the area of each semicircular section is $\dfrac{\pi e^{-2x}}8$ .

The volume of the solid is obtained by integrating from 0 to 1:

$\displaystyle\frac\pi8\int_{x=0}^{x=1}e^{-2x}\,\mathrm dx=\frac{(e^2-1)\pi}{16e^2}$

6 0

3 years ago

How many numbers between 40 and 129 are equal to 6 times an integer

Pavel [41]

Here, the series would be: 42, 48 .... 126
an = a + (n - 1)d
126 = 42 + (n - 1)6
126 - 42 = 6n - 6
84 + 6 = 6n
n = 90/6
n = 15

In short, Your Answer would be 15

Hope this helps!

7 0

3 years ago

What 21 over 40 divided by I’m

Fittoniya [83]

Answer:

if you're asking what 21 divided by 40 is then it's 0.525

Step-by-step explanation:

3 0

3 years ago

8. Find the values of angles x, y,

Eddi Din [679]

Answer:

option A

Step-by-step explanation:

option A is the correct answer of this question.

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you 

8 0

3 years ago

Read 2 more answers

1/3 + 1/2 + 1 2/3 - 4/5

mash [69]

17/10
or 1 7/10
i did it on my calculator lol

3 0

3 years ago