Answer:
$750,000
Step-by-step explanation:
$750,000 $680,000 $600,000 $880,000 $1,200,000 $760,000 $480,000
Write the prices in increasing order and choose the middle one.
$480,000 $600,000 $680,000 $750,000 $760,000 $880,000 $1,200,000
Answer: $750,000
Hello, the answer is simple it is W=6
For this case we have an equation of the form:
y = A * (b) ^ t
Where,
A: initial amount
b: decrease rate
t: time in years.
Substituting values we have:
7 = A * (0.5) ^ ((1/20) * t)
For t = 45 years we have:
7 = A * (0.5) ^ ((1/20) * 45)
Clearing A:
A = 7 / ((0.5) ^ ((1/20) * 45))
A = 33.3
Answer:
the density of the substance when it was deposited 45 years ago was:
A = 33.3 milligrams per square centimeter
The mass in kilograms would be: 1.442424
