Answer:
56+56=112 16kg
112+42=154 42 = 6kg
Step-by-step explanation:
Answer: $817.35
Step-by-step explanation:
150x4 = 600
600+217.35 = 817.35
Answer: Many solutions!
Step-by-step explanation:
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Answer:
approximately 27 grams
Work Shown:
Half life formula
y = A*(0.5)^(x/H)
where,
A = starting amount = 30 grams
H = half life period = 90 years
x = number of years that pass by = 12
y = amount left over after x years
Let's plug the values for x, A and H into the formula to find y
y = A*(0.5)^(x/H)
y = 30*(0.5)^(12/90)
y = 27.3516746567466
y = 27 .... rounding to the nearest whole number
