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3 years ago

Help plz:)))I’ll mark u Brainliest !

Mathematics

2 answers:

Daniel [21]3 years ago

8 0

18.4 have a great day!

seropon [69]3 years ago

4 0

Answer:

A= 18.4

Step-by-step explanation:

i dont think you'll need to show work so ill save u time :)

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Lock 1: Write your response in Alphabetical Order and in ALL CAPITAL LETTERS (Do not put any spaces or commas.) You must choose

Setler79 [48]

Answer:

A, C, and E

Step-by-step explanation:

It seems you forgot to add the possible answers to the question, but these are all of the choices that contain grammatical errors and should be revised.

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4 years ago

Convert the integral below to polar coordinates and evaluate the integral.

Lelechka [254]

Answer:

$\int\limits_{0}^{4/\sqrt{2}}\int\limits_{y}^{\sqrt{16-y^2}} xy \, dxdy = \int\limits_{0}^{\pi/4} \, \int\limits_{0}^{4} r^3 cos(\theta)\sin(\theta) \,\, drd\theta = 16$

Step-by-step explanation:

We are trying to evaluate this integral.

$\int\limits_{0}^{4/\sqrt{2}}\,\,\int\limits_{y}^{\sqrt{16-y^2}} xy \,\,dxdy$

The first thing that we have to do is understand this region in the plane.

$\{ (x,y) \in \mathbb{R} : 0\leq y \leq \frac{4}{\sqrt{2}} \,\, , y \leq x \leq \, \sqrt{16-y^2} \}$

If you graph it looks something like the photo I join.

Now we need to describe that same region in polar coordinates.

That same region in polar coordinates would be

$\{ (r,\theta) : \,\, 0 \leq \theta \leq \frac{\pi}{4} \,\,\, 0\leq r \leq 4 \}$

Now remember that when we do the polar transformation we use the following formula

$\int\limits_{a}^{b} \, \int\limits_{c}^{d} f(x,y) \,dxdy = \int\limits_{\theta_1}^{\theta_2} \, \int\limits_{r_1}^{r_2} r* f(rcos(\theta),rsin(\theta)) \,drd\theta$

Then our integral would be

$\int\limits_{0}^{4/\sqrt{2}}\int\limits_{y}^{\sqrt{16-y^2}} xy \, dxdy = \int\limits_{0}^{\pi/4} \, \int\limits_{0}^{4} r^3 cos(\theta)\sin(\theta) \,\, drd\theta = 16$

6 0

3 years ago

Hugh poured 100 kilograms of water into 10 kg of salt.

Leokris [45]

Answer:

110, 9.1. The total weight of the salt solution is the weight of water plus the weight of salt. So he made 100+10=110 kg of salt solution.

Step-by-step explanation:

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3 years ago

Juan adds 3.8+4.7 and gets a sum of 84 .Is his answer correct.tell how you know

Ivan

Answer:

His answer was wrong the answer should be 8.5 .

Step-by-step explanation:

3.8+4.7=8.5

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3 years ago

Chuck mallory makes a deposit at an atm and walks away with $50.00 in cash and the receipt for the $538.00 total deposit he made

Delicious77 [7]

I think this answer is $176.00

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3 years ago