1. Eric has 25 rocks he has collected as a science project for class. Nine rocks are sedimentary, 10 are igneous, and 6 are metamorphic. If Eric
chooses a rock at random, what is the probability that he will choose
an igneous rock?
A 1/2
B 2/5
C 3/8
D 1/15

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force