Camille invested $3000 into an account that earned annual simple interest. she made no deposits or withdrawals, and after 9 yrs, she had earned $1755 in interest. what was the interest rate of the savings account?

6.5 %  

Step-by-step explanation:

The simple interest formula is

I = Prt

Data:

I = $1755

P = $3000

t = 9 yr

Calculation:

1755 = 3000 × r × 9

1755 = 27 000 r

Divide each side by 27 000

r = 1755/27 000 = 0.065 = 6.5 % APR

The annual percentage rate was 6.5 %.

b i think

step-by-step explanation:

not really sure

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.