The annual interest rate of erika's savings account is 6.4%, and simple interest is calculated quarterly. what is the periodic interest rate of erika's account?

The periodic interest rate of Erika's account is 1.6%.

Step-by-step explanation:

It is given that annual interest rate of Erika's savings account  is 6.4%

This simple interest rate is calculated quarterly.

To calculate the periodic interest rate of Erika's Account, you only have to divide the annual interest rate (6.4%) by year.

So, you have

( 6.4% ) ( )

=

= 1.6%

The periodic interest rate of Erika's account is 1.6%.

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet