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KIM [24]
2 years ago
13

What’s the definition of percent equation

Mathematics
1 answer:
geniusboy [140]2 years ago
7 0
I think the asnwet is 2 also
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If sec theta = - √30 / 3, find cos theta.<br> if sin(-theta) = -0.97, find cos (π/2 - theta).
Cloud [144]

Step-by-step explanation:

\cos \theta  =  \frac{1}{ \sec\theta }  =  -  \frac{3}{ \sqrt{30} }  =  -  \frac{3 \sqrt{30} }{30}   =  -  \frac{ \sqrt{30} }{10}

\cos( \frac{\pi}{2} -  \theta )=  \cos \frac{\pi}{2}  \cos \theta  +   \sin \frac{\pi}{2}  \sin \theta

Note that

\sin( - \theta) =  -  \sin \theta

\cos \frac{\pi}{2}  = 0 \:  \:  \:  \:  \:  \sin \frac{\pi}{2}  = 1

Therefore,

\cos( \frac{\pi}{2} -  \theta )  = 0.97

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3 years ago
Which should be calculated first to solve this story problem?
Elden [556K]
The answer would be a because of the time he is at the gym just add and subtract but the answer is a
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3 years ago
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VARVARA [1.3K]
No, in 2 seconds you would travel 20 meters
8 0
2 years ago
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Find the median for the following set of numbers: <br> 12, 15, 15, 16, 19, 21, 25
Hoochie [10]

The median is the number in the middle of the data set.

There are 7 numbers, so the 4th number is the median.

(Another method is to eliminate a number on each side until you get to the middle number)

<h2>Answer:</h2>

<u>The median is </u><u>16</u><u>.</u>

I hope this helps :)

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\bf f(x)= 7sin(x)-1  \qquad &#10;\begin{cases}&#10;x_1=0\\&#10;x_2=\frac{\pi }{2}&#10;\end{cases}\implies \cfrac{f\left( \frac{\pi }{2} \right)-f(0)}{\frac{\pi }{2}-0}&#10;\\\\\\&#10;\cfrac{[7\cdot 1-1]~-~[7\cdot 0-1]}{\frac{\pi }{2}}\implies \cfrac{6-(-1)}{\frac{\pi }{2}}\implies \cfrac{6+1}{\frac{\pi }{2}}\implies \cfrac{7}{\frac{\pi }{2}}\implies \cfrac{14}{\pi }
7 0
3 years ago
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