Find a basis for r^3 that includes the vector z - hint: the set ={, el, e2, e3} spans r3.

What is the number 321,000,000 in scientific notation? also what is the number? ?

Simplify the expression. -2/5(10+15m-20n)

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.