At the beginning of year 1, amada invests $800 at an annual compound interest rate of 5%. she makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account’s balance at the beginning of year 5? what is the balance? a(n) = 800 • (1 + 0.05)(n – 1); $972.41 b. a(n) = 800 + (n – 1)(0.05 • 800); $960.00 c. a(n) = 800 • (1 + 0.05)n; $1021.03 d. a(n) = 800 + (0.005 • 800)(n – 1); $1056.00

Step-by-step explanation:

Principal = $800

Rate of interest = 5% = 0.05

Since we are given that At the beginning of year 1, Amada invests $800 at an annual compound interest rate of 5%.

Formula :

A is the amount

P is the principal

r = rate of interest in decimal

n = times period

Since we are given that we need to find the amount at the beginning of year 5

So, we need to replace n with n-1

So, formula becomes :

Substitute the values

Hence Option A is correct.

Thus explicit formula can be used to find the account’s balance at the beginning of year 5 is  

Balance at the beginning of year 5 is $972.41

ans789

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it