What is the best estimate for$21.15 $19.89 $6.52

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

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′.

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi