X + y = 0 3x - 2y = 10
Which of the following pairs (x, y) satisfies the system of equations above?
(3, 2)
(2, -2)
(-2, 2)
(-2, -2)

Remote sensing of the earth's surface and atmosphere may involve the use of what type of instruments?

When you look at the data about all of the children in your setting, you can learn a. about child development. b. how well each individual child is performing. c. what outside factors you need to change. d. how effective your instruction and environment are.

28. the new systematic nomenclature was so ( that many chemists preferred to ( the older trivial names that were at least shorter. at least, that is the ostensible reason. actually, tradition seems to carry more weight than ( with some scientists.