Luke is a messenger for a package-delivery company. he starts at the company’s office and walk 4 blocks due west to deliver the first package, then 5 blocks due east to deliver the second package, then 1 more block due east to deliver the last package, and finally 2 blocks due west back to office. write an expression to represent this situation.

4 Blocks West, 5 Blocks East, 1 Block East, 2 Blocks West

W = West

E = East

Simplify, by collecting like terms.

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.