Find
(5.2 x 107)(5 x 108)
(3.2 x 106)(5 x 105)
, expressed in scientific notation.

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.