Answer:
Step-by-step explanation:
We have given:
Principal amount which is 80,000
Time which is 20 year
Rate which is 11.5%
And since, we have to find 13 years early so, time would be: 20-13=7 years.
And since, we have to find for 12 months
Hence, n=12
We have formula to calculate compound interest:
On substituting the values we get:
On simplification we get:
Answer:
The spinner has 6 equal-sized slices, so each slice has a 1/6 probability of showing up.
I guess that we want to find the expected value in one spin:
number 1: wins $1
number 2: wins $3
number 3: wins $5
number 4: wins $7
number 5: losses $8
number 6: loses $8
The expected value can be calculated as:
Ev = ∑xₙpₙ
where xₙ is the event and pₙ is the probability.
We know that the probability for all the events is 1/6, so we have:
Ev = ($1 + $3 + $5 + $7 - $8 - $8)*(1/6) = $0
So the expected value of this game is $0, wich implies that is a fair game.
D. 147 square units is your answer
Edward has 12 coins of the quarter and 8 coins of nickel with him
Total number of coins = 20
The total amount of money = $3.40
Let x represent the number of quarters and y represent the number of nickels
Formulating the equations we get:
x + y = 20-------(1)
0.25x + 0.05y = 3.40
Simplifying by removing the decimals and solving
25x + 5y = 340------(2)
Multiplying equation (1) by 5 and subtracting with equation (2) we get the following:
5x + 5y = 100
25x + 5y = 340
= 20x = 240
x = 12
So, y = 8
So, the number of quarters is 12 and the number of nickels is 8
Learn more about linear equations:
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