Find the Length of the Vector $2 a + 3 b$

question 186

Multiple Choice

Find the length of the vector $2 a + 3 b$ , where $\mathbf { a } = \langle 1,1 \rangle$ and $\mathbf { b } = \langle - 1,2 \rangle$ .

• A) \(\sqrt { 51 }\)
• B) \(\sqrt { 53 }\)
• C) \(\sqrt { 57 }\)
• D) \(\sqrt { 65 }\)
• E) \(\sqrt { 71 }\)
• F) \(\sqrt { 73 }\)
• G) \(\sqrt { 82 }\)
• H) \(\sqrt { 87 }\)

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