Elsa needs to memorize words on a vocabulary list for french class. she has memorized
12
of the words, which is one-half of the list. how many words are on the list?

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Which expression gives the exact value of x?

Yvaries inversely as x. y =12 when x=5. find y when x=4