Answer:
1. 9
2. 122cm squared
3. 189m
4. 30
5. b
Step-by-step explanation:
1. 27,36,45,54,63,72,81,90,99
2. 12x6=72 10x5=50 50+72=122
3. 21x9=189
4. 5x12=60 60/2=30
5 b because 150 divided by 4 doesn't give you a whole number.
you have to add
Answer: c=19 and n=4
please mark as brainliest if it helped
55 times 6 is 330 + 40 would be 370 so i dont see how it could be D -101
