15:7.5:30
This is because 15 is the smallest, which is half of 4(30). And right between 15 and 30 is 7.5.
Hope this helps
Answer:
Compass; straightedge.
Step-by-step explanation:
Answer:69
Step-by-step explanation:
69•2= 138
69-11=58
58•3=174
174+138=312
Asnwer: C
-------------------------------------