The range of communication is about 55 meters.
Answer:
A) 24
Step-by-step explanation:
4!
4 x 3 x 2 x 1
24
Answer: (b+5)(b-5)
Step-by-step explanation:
both b^2 and 25 are square numbers, so square root both of them to give b and 5, then put into brackets with a + and -
Answer:
x<12
Step-by-step explanation: