The radius of the circle is

, which is 4
The center of the circle is at (0,10)
Answer:
9.8w-7x+1
Step-by-step explanation:
9.8w-(7x-1)
Distribute the minus sign to each term in the parenthesis
9.8w-7x - -1
A negative negative is a positive
9.8w-7x+1
Answer:
5/31
Step-by-step explanation:
there are 31 days in January 5 of those are prefect squares (1,4,9,16,25)
Answer:
20 mg
Step-by-step explanation:
The amount remaining is:
A = P (½)^(t / T)
where P is the original amount,
t is time,
and T is the half life.
A = 415 (½)^(22/5)
A ≈ 20