Answer: d = -3
Step-by-step explanation:
2d+3=7d+18
-5d=15
d=-3
Answer:
P = 0.05
Step-by-step explanation:
E = P4πr²
2.50 = P4π(2)²
2.50 = P4π4
2.50 = P(50.265)
P = 0.05
Answer:
2:5
Step-by-step explanation:
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t=100
p=3000
t 1/2 = 20
Try inserting the numbers in the half-life formula.
1: 3 and 2/5
2: 8 and 1/2
3: 2 and 13/20
4: 2 and 4/5
5: 3 and 9/10
6: 8 and 4/5
7: 3 and 92/100
3 and 46/50
8: 6 and 69/100
9: 6 and 7:50
10: 9 and 1/10
11: 10 and 11/100
12: 7 and 1/5
13: 10 and 23/100
14: 5 and 1/5