PSLECaden had 3.9 m of streamer. He used some of it to make the figure as shown.
- How much of the streamer did Andy use to make the figure? Leave your answer in the simplest form in terms of e.
- If e = 19, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= e + e + e + (2e - 7) + (e + 13)
= e + e + e + 2e + e - 7 + 13
= (6 e + 6) cm
(b)
1 m = 100 cm
3.9 m = 390 cm
Total length of streamer used if e = 19
= 6 e + 6
= 6(19) + 6
= 114 + 6
= 120 cm
Total length of streamer not used
= 390 - 120
= 270 cm
1 cm = 0.01 m
270 cm = 2.7 m
Answer(s): (a) (6e + 6) cm; (b) 2.7 m