Answer:
1) °
2) °
Step-by-step explanation:
1)
As these two angles are supplementary (They add together to equal 180°) we can setup the equation and solve for x.
2)
Again, these two angles are supplementary we can setup the equation and solve for x
W=4N+10
N+4N+10=90
5N=80
N=80/5=16
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
0.1458333333333333... you get the idea :)