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stepan [7]
3 years ago
9

Find the function value.. . cos^2(7pi/8)=

Mathematics
1 answer:
Greeley [361]3 years ago
4 0
To evaluate this function, we use the calculator. We change the setting to radian first because we are using pi and thensimply input the cosine of 7 pi over 8. Then we square the answer. <span>We expect this number to be less than 1. </span>The function value is 0.8536. 
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Answer: h = 9

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The matrix given is:

\left[\begin{array}{ccc}-15&21&h\\5&-7&-3\end{array}\right]

Transform this matrix in a row-echelon form:

\left[\begin{array}{ccc}-15&21&h\\5&-7&-3\end{array}\right]   R_{2} = 3R_{2}+R_{1} \left[\begin{array}{ccc}-15&21&h\\0&0&-9+h\end{array}\right]

For this row-echelon form to have solutions:

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For this system to be consistent: h = 9.

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3 years ago
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2 years ago
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Elanso [62]

Answer:

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Step-by-step explanation:

Here, we want to get the median for the number of pencils

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