If y varies directly with the square of x and inversely with z. If x = 2, y = 1 and a = 10, find y when x = 4 and z = 5. A. 20
B. 30
C. 40
D. 50

Please give explanation/steps, thank youu! :)

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

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?

Atriangle has verticals at b(-3,0), c(2,-1), d(-1,2). which transformation would produce an image with verticals b”(-2,1), c”(3,2), d”(0,-1)?