solve 2sin^2x +5sinx − 3 = 0 for 0 ≤ x ≤ 2π

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

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

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?