1. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3.4.

2. Find 7a + 4b. a = 7i - 6j, b = 6i + 3j 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.73i - 30j 2.75i + 30j 3.73i + 30j 4.74i - 30j 5.74i - 29j

3. Find a unit vector with the same direction as 3i - 5j + 2k. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3. 4.

4. A woman walks due west on the deck of a ship at 2 mi/h. The ship is moving north at a speed of 25 mi/h. Find the speed of the woman relative to the surface of the water. Round the result to the nearest tenth. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.26.2 mi/h 2.25 mi/h 3.27.1 mi/h 4.23.1 mi/h 5.25.1 mi/h