4. decide if the following sets of vectors are linearly independent:

(b)(1 +t); (1 +t^2); (1-t)

also,

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Divide: 1573 ÷ 7 = a) 222 r5 b) 223 r6 c) 224 r5 d) 224 r3

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?