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Anastasy [175]
3 years ago
9

TEST DUE BY 12 I NEED HELP

Mathematics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

study

Step-by-step explanation:

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Write an integral in polar coordinates equivalent to the following:​
Alex73 [517]

The region is a segment of a circle with radius √2 lying above the line y=1. In polar coordinates, this line has equation

y = r\sin(\theta) = 1 \implies r = \csc(\theta)

and the circle has equation

x^2+y^2 = r^2 = 2 \implies r=\sqrt2

The two curves meet when

\csc(\theta) = \sqrt2 \implies \sin(\theta) = \dfrac1{\sqrt2} \implies \theta = \dfrac\pi4 \text { or } \theta = \dfrac{3\pi}4

Then the same integral in polar coordinates is

\displaystyle \int_{-1}^1 \int_1^{\sqrt{2-x^2}} xy \, dy \, dx = \boxed{\int_{\pi/4}^{3\pi/4} \int_{\csc(\theta)}^{\sqrt2} r^3 \cos(\theta) \sin(\theta) \, dr \, d\theta}

4 0
1 year ago
the decimal 104.3 becomes 1,043 when multiplied by 10. the same number becomes 10.43 when multiplied by 0.10. explain why.
sveta [45]
Since 0.10 is a decimal, multiplying 104.3 by 0.10 is actually dividing 104.3 by 10. Thus 104.3 multiplied by 0.10 is 10.43
3 0
3 years ago
Find the axis of the graph of the function..f(x) = 4x2 + 8x + 7
SpyIntel [72]
F ( x ) = 4 x² + 8 x + 7
a = 4,  b = 8
The axis formula is:
x = - b / 2 a
x = - 8 / (2*4) = - 8 / 8 = -1
Answer:
The axis of the graph of the function is x = - 1.
7 0
3 years ago
3/4 of x, if x= 15/28<br> PLS HELP!!!
dezoksy [38]

Answer:

45/112

Step-by-step explanation:

if you didnt know, of also means multiply, so just do 3/4 times 15/28, and the answer would be correct

7 0
3 years ago
Read 2 more answers
A trinomal that has a greatesr common factor of 1 is prime? Yes or no
puteri [66]

Answer:

yes

Step-by-step explanation:

yes it is im pretty sure

8 0
3 years ago
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