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1991987
01.07.2019 •
Mathematics
Sarah invested $500 for 3 years at the investment maturity its value was 578 what was the annual simple interest rate
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Ответ:
1) for this exercise you must apply the following formula,
I = C ×i×n, where I is the interest, C is the capital initial, i is the rate of interest, and n is time
2) second step
you must× calculate the I = M-C, where M is the final amount and C is the capital
I = 578-500 = 78
3) third step
substitute the values in equation 1
I = C ×i ×n
78= 500×i×3⇒i =78/(500×3)⇒i= 0,052 ⇒ 0,05×100 = 5,2% annual interest
Ответ:
Notice the pattern
1^2 = 1*1 = 1
2^2 = 2*2 = 4
3^2 = 3*3 = 9
4^2 = 4*4 = 16
5^2 = 5*5 = 25
6^2 = 6*6 = 36
the pattern goes on forever
In general, if n is any number then we have n^2 = n*n as the term
Ie, nth term is n^2
In our case, the next term is the 6th term with n = 6, so n^2 = 36