+20 because when u deposit your adding money
Squaer pyramid
paralel plane
square base
therfor cross section is another square
P=A/(1+rt)
P = 20 / ( 1 + (0.05 × 5)) = 16
P = $ 16.00
The principal investment required to get
a total amount, principal plus interest, of $ 20.00
from simple interest
at a rate of 5% per year
<span>for 5 years is $ 16.00.</span>
I got -0.5 if you divide it like this 16 divided by (-8) you will get -2 but if you flip them you get 0.5. If you need more help on stuff like this then you can always use desmos | scientific calculator
The answer of larger angle is 132 degree