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andrew-mc [135]
3 years ago
6

Please help!!!! If you can do at least one that would be great!!!!☺​

Mathematics
2 answers:
kotegsom [21]3 years ago
8 0

Answer:

i think it is a i hope tis helps an i hope it is right

umka21 [38]3 years ago
4 0

Answer:

1=a ; 2=c; 3=c;

Step-by-step explanation:

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Find the rectangular coordinates of the point ( -3, 1/2 π)
alexdok [17]

Answer:

x = -3 cos (\frac{\pi}{2})= 0

y = -3 sin (\frac{\pi}{2})= -3

And then the rectangular coordinates for this case are :

(x = 0 , y = -3)

Step-by-step explanation:

We have the following point given P = (-3, \frac{\pi}{2}) and we want to conver from polar to rectangular coordinates and we need to use the following formulas:

x = r cos \theta

y = r sin \theta

For this case we have that:

r = -3

And:

\theta = \frac{\pi}{2}

Replacing we got:

x = -3 cos (\frac{\pi}{2})= 0

y = -3 sin (\frac{\pi}{2})= -3

And then the rectangular coordinates for this case are :

(x = 0 , y = -3)

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4 years ago
Solve for X and find the length of EF.
DaniilM [7]

Answer:

X=1? and that would make EF= 15. But what are the choices?

Step-by-step explanation:

3 0
3 years ago
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Fudgin [204]
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Find the number in the thousand place
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Point a (–4,1) is in the standard ( x , y ) co ordinate pl an
ser-zykov [4K]
The line x = 2 is vertical. This means that ab is horizontal since they are perpendicular. So, the y coordinate of b must be 1.

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The coordinate of b is (8, 1)
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Find the inverse of the function f (x) = 9x – 5
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Answer:

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Step-by-step explanation:

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