Question

Find the magnitude of the vector.
(-2,-7)

Answer 1

53

Explanation:

Answer 2

`√(53)`

Explanation:

`\begin{pmatrix}-2&-7\end{pmatrix}\\=√(\left(-2\right)^2+\left(-7\right)^2)\\\\`

Then you need to simplify:

`=√(2^2+\left(-7\right)^2)\\=√(2^2+7^2)\\=√(4+7^2)\\=√(4+49)\\=√(53)`