Perform the indicated operation. Use the form <a, b> for vectors.
-v = <-3, 5>, u = <-4, -1>; Find 5v - 7u.

Name: Perform the indicated operation. Use the form <a, b> for vectors. -v = <-3, 5>, u = <-4, -1>; Find 5v - 7u. A) <10, 35> B) <-35, -28> C) <-70, 175> D) <13, 32>
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Question

Perform the indicated operation. Use the form for vectors. -v = <-3, 5>, u = <-4, -1>; Find 5v - 7u. A) <10, 35> B) <-35, -28> C) <-70, 175> D) <13, 32>

Quizplus · Accepted Answer

First, calculate 5v = 5 * <-3, 5> = <-15, 25>. Then, calculate 7u = 7 * <-4, -1> = <-28, -7>. Finally, subtract: 5v - 7u = <-15, 25> - <-28, -7> = <13, 32>.

Perform the Indicated Operation