A bank pays investors 4% per annum compound interest, compounded half-yearly. Find the original amount Rui Feng invested if he received $5,800 as interest at the end of 3 years.​

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.

i don't see any

step-by-step explanation:

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im guessing (23,14). hope this : )