Find a+b, 2a+3b,|a|, and |a-b|. a=3i-5j+3k, b=2j-k

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?