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stiv31 [10]
3 years ago
9

a principal of $700 is invested in an account at 6% per year compounded annually what is the total amount of money in the accoun

t after 5 years
Mathematics
2 answers:
pishuonlain [190]3 years ago
6 0

Answer:

$936.76

Step-by-step explanation:


Simora [160]3 years ago
3 0

Answer:

Total amount of money in the account be $936.6 .

Step-by-step explanation:

Formula

Amount = P(1 + \frac{r}{100})^{t}

Where P is the principle , r is the interest and t is the time .

As given

A principal of $700 is invested in an account at 6% per year compounded annually for 5 years .

Putting all the values in the formula

Amount = 700(1 + \frac{6}{100})^{5}

Amount = 700(1 + 0.06)^{5}

Amount = 700(1.06)^{5}

Amount = 700\times 1.338\ (Approx)

Amount = $ 936.6

Therefore the total amount of money in the account be $936.6 .

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Neporo4naja [7]

Answer:

a) P(x > 120) = 0.03288

b) P(100 < x < 110) = 0.46777

c) value of a for which P(x < a) = 0.25

a = 99.91

Step-by-step explanation:

This is a normal distribution problem with

Mean = μ = 105.3

Standard deviation = σ = 8.0

a) P(x > 120)

To work this, we first need To convert 120 go standardized/normalized/z-scores.

The standardized score for any value is the value minus the mean then divided by the standard deviation.

z = (x - μ)/σ = (120 - 105.3)/8.0 = 1.84

To determine P(x > 120) = P(z > 1.84)

We use the tables for these probabilities now.

P(x > 120) = P(z > 1.84) = 1 - P(z ≤ 1.84) = 1 - 0.96712 = 0.03288

b) P(100 < x < 110)

We normalize the two value in the inequality

For 100,

z = (x - μ)/σ = (100 - 105.3)/8.0 = -0.66

For 110,

z = (x - μ)/σ = (110 - 105.3)/8.0 = 0.59

To determine P(100 < x < 110) = P(-0.66 < z < 0.59)

We use the tables for these probabilities now.

P(100 < x < 110) = P(-0.66 < z < 0.59) = P(z < 0.59) - P(z < -0.66) = 0.72240 - 0.25463 = 0.46777

c) value of a for which P(x < a) = .25

Let the z-score of a be z'

z' = (x - μ)/σ = (a - 105.3)/8.0

P(x < a) = P(z < z') = 0.25

Using the table, z' = - 0.674

-0.674 = (a - 105.3)/8

a - 105.3 = -5.392

a = 105.3 - 5.392 = 99.91

Hope this Helps!!!

5 0
3 years ago
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