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artcher [175]
3 years ago
15

Simplify x0 y-3/x2 y-1

Mathematics
1 answer:
Natali5045456 [20]3 years ago
6 0

Answer:

x^0 y^-3 / x^2 y^-1  

= 1 /  x^2 y^-1 (y^3)  ...because  x^0 = 1 and  [(y^-1) (y^3)] = y^2

= 1/(x^2 y^2)



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Given cos theta = - 2/5 and sin theta < 0, find the six trigonometric values. I need help with this
Lena [83]

Answer:

\sin\,\theta =-\frac{\sqrt{21} }{5}

\tan\,\theta =\frac{\sqrt{21} }{2}

\sec\,\theta = \frac{-5}{2}

cosec\,\theta =\frac{-5}{\sqrt{21} }

\cot\,\theta =\frac{2}{\sqrt{21} }

Step-by-step explanation:

\cos\theta =\frac{-2}{5}

As both sin\,\theta,

\theta lies in the third quadrant.

In the third quadrant,

\sin\theta

\sin\,\theta =-\sqrt{1-\cos^2\,\theta} \\=-\sqrt{1-(\frac{-2}{5})^2 } \\\\=-\sqrt{1-\frac{4}{25} }\\\\=-\sqrt{\frac{25-4}{25} }\\\\=-\frac{\sqrt{21} }{5}

\tan\,\theta = \frac{\sin\,\theta}{\cos\,\theta }\\\\=\frac{\frac{-\sqrt{21} }{5} }{\frac{-2}{5} }\\\\=\frac{\sqrt{21} }{2}

\sec\,\theta =\frac{1}{\cos\,\theta }\\\\=\frac{1}{\frac{-2}{5} }\\\\=\frac{-5}{2}

\ cosec \,\theta = \frac{1}{sin\,\theta }\\\\=\frac{1}{\frac{-\sqrt{21} }{5} }\\\\=\frac{-5}{\sqrt{21} }

\cot\,\theta =\frac{1}{\tan\,\theta}\\\\=\frac{1}{\frac{\sqrt{21} }{2} }\\\\=\frac{2}{\sqrt{21} }

3 0
3 years ago
Help me please 2 minutes for class to start
aleksandr82 [10.1K]

From c=b-5

Independent variable is b, the number of cookies in the jar before your visit

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6 0
2 years ago
Saved
nadezda [96]
The answer is 3 because the mean of the numbers on both of them are 3
Hope it helped:)

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2 years ago
An interger between -5 and -6
ivolga24 [154]

Answer:

None!

Step-by-step explanation:

First off, what is an integer? An integer is a number that is not a fraction or a whole number but it can be negative or positive.

-5 and -6 are both integers and they are both consecutive integers meaning that they are following one another. So they is no integer between -5 and -6.

4 0
1 year ago
Compared to its parent function the transformation of the following : y= -3x - 3 + 4
astra-53 [7]
The answer is B
Hope it helps!!
6 0
3 years ago
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