Which expression is equivalent to the expression 5b+16? 36-6+2b+ 22
50-6+b+22
26+4+2+12
75+ 3-2b+9

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

Pls , the question is in the picture!

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?