Which of the following expressions are perfect-square trinomials? Check all of the boxes that apply. x2 – 16x – 64 4x2 12x 9 x2 20x 100 x2 4x 16

Ben is interested in using a source that provides original research, current and developing trends and experts within specific fields. which source should he use?

If your not fit to drive you have a responsibility to

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.