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uranmaximum [27]
3 years ago
10

Sally invests £8000 in a savings account. The account pays 2.8% compound interest per year work out the value of her investment

after 4 years give your answer to the nearest penny
Mathematics
1 answer:
Alborosie3 years ago
6 0

Answer: the value of her investment after 4 years is £8934.3

Step-by-step explanation:

The formula for determining compound interest is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount invested.

t represents the duration of the investment in years.

From the information given,

P = 8000

r = 2.8% = 2.8/100 = 0.028

n = 1 because it was compounded once in a year.

t = 4 years

Therefore,

A = 8000(1+0.028/1)^1 × 4

A = 8000(1+0.028)^4

A = 8000(1.028)^4

A = £8934.3 to the the nearest penny

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Answer:

x  =  7

y  =  3

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Step-by-step explanation:

Let call  

x numbers of church goup and

y numbers of Union Local

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Second one

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First Table

z           x          y          s₁           s₂          Cte

1        -150    -200       0            0     =      0

0          2         2           1            0     =    20

0          1          3          0            1      =     16

First iteration:

Column pivot   ( y column ) row pivot (third row) pivot 3

Second table

z           x                y          s₁           s₂                Cte

1       -250/3           0          0         200/3    =    3200/3

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0         1/3               1            0           1/3       =    -20/3

Second iteration:

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Third table

z           x                y          s₁           s₂                Cte

1            0               0      750/12    700/6    =   4950/3

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