Need help with math homework! MATH EXPERTS!

[ohtwell]

Originally posted by: iamwiz82
A/theta = PIE r^2/360 DOES NOT EQUAL Theta = PIE r^2/360A

1/theta = PIE r^2/360A

if you have 1/theta * A(which is A/theta) removing that theta does not make it theta, it makes it 1/theta. You are giving him the inverse of the correct answers.

You gave him the wrong answer on another problem too.

Never mind! Me is teh stupid.


: ) Amanda

 

[iamwiz82]

Originally posted by: Joony
hmm wow...theta...another question!

You plan to invest $1200 in two funds paying 7.5% and 10% simple intrerest. (there is more risk in the 10% fund.) Your goal is to obtain a total annual interest income of $1000 from the investments. What is the smallest amount you can invest in the 10% fund in order to meet your objective.

...confuses me...wouldn't it be:

7.5x + .10(1200x)= 1000

?

are you sure its supposed to be $1000 in interest?

 

[Joony]

yep, i exactly quoted it from the book. I don't understand what the purpose of that problem does