I honestly think 3.5 but i’m sorry if i’m wrong
The ratio is 2:1 and the same for area
Answer:
uh how can it be diviede in 4 parts XD
Step-by-step explanation:
Answer:
1. 24
2.
where n denotes number of days.
3. 70
Step-by-step explanation:
1.
Consider the sequence: 
Here,

Take the common difference as d = 2 and the first term as a = 12
Use the formula: 
To find expected gain at the end of the week, find 

2.
Yes, the gain shows the pattern.
Put
in 

Here, n denotes number of days.
3.
To find expected gain at the end of 30 days, put
in 

Mass number is # of protons + # of neutrons
since the atomic number is the number of protons, the number of protons is 57
so 168 = 57 + x
x = 111 neutrons