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never [62]
3 years ago
13

GUYS IS THIS RIGHT? PLEASE BE HONEST AND IF ISN’T PLEASE TELL ME WHAT I DID WRONG TYY :)

Mathematics
2 answers:
scoray [572]3 years ago
6 0
That is correct ! you did everything right
Ilya [14]3 years ago
4 0

Answer:

Step-by-step explanation:

Yes! Congrats! You got everything right! Keep going!

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Evaluate the given integral by changing to polar coordinates. sin(x2 + y2) dA R , where R is the region in the first quadrant be
koban [17]

Set

\begin{cases}x=r\cos\theta\\y=r\sin\theta\end{cases}\implies\mathrm dA=r\,\mathrm dr\,\mathrm d\theta

The region R is given in polar coordinates by the set

R=\left\{(r,\theta)\mid2\le r\le3,0\le\theta\le\dfrac\pi2\right\}

So we have

\displaystyle\iint_R\sin(x^2+y^2)\,\mathrm dA=\int_0^{\pi/2}\int_2^3r\sin(r^2)\,\mathrm dr\,\mathrm d\theta=\boxed{\frac\pi4(\cos4-\cos9)}

8 0
3 years ago
Does anyone know this?
Tresset [83]

<ABC would equal 106

seeing in triangle ABD angle A equals 67 you would multiply that by 2 and then subtract it from 180 to get 46, and then triangle DBC all the angles would equal 60. so then add 46 to 60 to get 106 the measure of <ABC

3 0
3 years ago
Chris plans to buy a car that depreciates in value at a rate of 10% per year. If the car initially costs $32,000. How much will
VLD [36.1K]
The car would be worth $16,000 after 5 years.
5 0
3 years ago
What is (3i-2/3)-(6i-5) in standard form
k0ka [10]

Answer:

13/3 -3i

Step-by-step explanation:

(3i-2/3)-(6i-5)

Distribute the minus sign

(3i-2/3)-6i+5

Combine like term

-2/3 +5  +3i - 6i

-2/3 +15/3   -3i

13/3 -3i

This is standard form

5 0
3 years ago
3h - j when h = 8 and j = 11<br> plzzz help
AURORKA [14]

Answer:

13

Step-by-step explanation:

3h - j

3(8) - 11

24 - 11

13

8 0
3 years ago
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