Which US region is the most important for agriculture and mining?
A.
the Rocky Mountains
B.
the Coastal Plains
C.
the Great Basin
D.
the Great Plains

Please select the best answer from the choices provided
A
B
C
D

Find the roots of the equation below. x^2 - 6 + 9 = 0

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.