An initial amount of money is placed in an account at an interest rate of 3% per year, compounded continuously. After six years,
1 answer:
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Answer:
Step-by-step explanation:
Given:
Radius of spherical tank,
Volume of a quarter of a sphere is given as:
Plug in 70 ft for ,
for
and solve for the volume,
. This gives,
Therefore, the volume of the quarter sphere shaped tank is
Answer:
The number of baseball card to begin with is 143
Step-by-step explanation:
Let The number of baseball cards = x
The number of sold baseball card = 60% of x
= 0.6 x
The number of left baseball card = x - 0.6 x = 0.4 x
The number of card gave away = 30 % of left cards
= 0.3 × 0.4 x = 0.12 x
The number of card left in his possession = 40
So, 0.6 x + 0.12 x + 40 = x
Or, 40 = x - 0.6 x - 0.12 x
Or, 40 = 0.28 x
∴ x = = 142.85 ≈ 143
Hence The number of baseball card to begin with is 143 Answer