Multiply 75*5 to get 375
then add 120 from the lot to get 495
Answer: the account earns interest of $40.16
Step-by-step explanation:
We would apply the formula for determining compound interest which 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 deposited
From the information given,
P = 875.83
r = 9% = 9/100 = 0.09
n = 12 because it was compounded 12 times in a year.
t = 6 months = 6/12 = 0.5 year
Therefore,.
A = 875.83(1+0.09/12)^0.5 × 12
A = 875.83(1+0.0075)^6
A = 875.83(1.0075)^6
A = 915.99
The interest that she earns is
915.99 - 875.83 = $40.16
You can build a cylinder in two ways: either you draw a circle on a plane, and "raise" it perpendicularly to the plane itself, or you start with a rectangle, and rotate it around one of its sides.
For these reasons, if you cut the cylinder with a plane parallel to the base you have a circular cross section, while if you cut the cylinder with a plane perpendicular to the base you have a rectangular cross section.
For this case, the average is the sum of the amounts of the three days divided by three.
We know the earn of Friday and Saturdar. We can assign x to the earn of saturday.
![Promedio= \frac{1073USD + 1108USD + xUSD}{3} =100 USD](https://tex.z-dn.net/?f=Promedio%3D%20%5Cfrac%7B1073USD%20%2B%201108USD%20%2B%20xUSD%7D%7B3%7D%20%3D100%20USD)
![Promedio= \frac{2181USD + xUSD}{3} =100 USD](https://tex.z-dn.net/?f=Promedio%3D%20%5Cfrac%7B2181USD%20%2B%20xUSD%7D%7B3%7D%20%3D100%20USD)
We need to multiply by 3 both sides of the equation.
![3(\frac{2181USD + xUSD}{3}) =3(100 USD)](https://tex.z-dn.net/?f=3%28%5Cfrac%7B2181USD%20%2B%20xUSD%7D%7B3%7D%29%20%3D3%28100%20USD%29)
2181 USD + x USD =300 USD
We need to substrat 2181 USD in both sides.
2181 USD - 2181 USD + x USD =300 USD - 2181 USD
x USD =300 USD - 2181 USD
x USD = - 1881 USD
They need a negative earn in order to have an average earn of 100 USD per day.
1073 USD + 1108 USD - 1881 USD = 300 USD
300 USD / 3 = 100 USD
![[tex]2181 USD - 2181 USD+ xUSD =3100 USD - 2181 USD](https://tex.z-dn.net/?f=%5Btex%5D2181%20USD%20-%202181%20USD%2B%20xUSD%20%3D3100%20USD%20-%202181%20USD%20)
[/tex]