What is the Error? and correct the following

9.4 + (-6.2)= -3.2

This is how the steps should look

9.4 + (-6.2)

9.4 - 6.2

3.2

The error was that the student made the result negative, when it should be positive. A similar idea is something like 5 + (-3) = 5 - 3 = 2.

b. hoped i'm right lol

step-by-step explanation:

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;