After 2 years, deion earned $270 in simple interest from a cd into which he initially deposited $6000. what was the annual interest rate of the cd? a. 6.5% b. 9.75% c. 2.25% d. 3.25%

C.2.25%

Step-by-step explanation:

Given : Simple interest = $270

           Principal = $6000

           time = 2 years

To F ind : Annual interest rate (R)

Solution :

using simple interest formula i.e.

where R is in decimals

⇒

⇒

⇒0.0225 = R(IN DECIMAL)

Multiply by 100 to convert it in percentage

⇒R = 2.25%

Thus  the annual interest rate of the CD is 2.25%

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

answer: im sorry i dont get it

step-by-step explanation: