Mathematics: Plz im almost done but this is highly difficult

Plz im almost done but this is highly difficult

tystevens9943

14.01.2022

Area of shaded sector = 155/360(the area of the circle)

A of circle = 3.14 * r^2

A of shaded sector... = 155/360 * 8 * 8 * 3.14 = 86.52 = 87

Step-by-step explanation:

3.14 * r^2

155/360 * 8 * 8 * 3.14 = 86.52 = 87

155/360(the area of the circle)

0,0(0 оценок)

afitzgerald

05.11.2020

You have to deposit $8,207.5 today.

Step-by-step explanation:

Compound interest:

The amount of money in yearly compounded interest, after t years, is given by the following equation:

A(t) = A(0)(1+r)^t

In which A(0) is the initial deposit and r is the interest rate, as a decimal.

You would like to have $10,000 in an account after eight years time.

This means that when t = 8, A(t) = 10000

2.5% compounded interest

This means that r = 0.025

A(t) = A(0)(1+r)^t

A(t) = A(0)(1+0.025)^t

A(t) = A(0)(1.025)^t

How much would you have to deposit today?

We have to find A(0), when t = 8, A(t) = 10000 . So

A(t) = A(0)(1.025)^t

10000 = A(0)(1.025)^8

$A(0) = \frac{10000}{(1.025)^8}$

A(0) = 8207.5

You have to deposit $8,207.5 today.

0,0(0 оценок)