Mathematics, 15.01.2020 19:31 nefertiri64

What is the area of `deltaxyz`?

$\left[\begin{array}{ccc}a& 10\\b& 14\\c& 17.5\\d& 28\end{array}\right]$

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What is the area of `deltaxyz`?

[tex]\left[\begin{array}{ccc}a& 10\\b& 14\\c&am...