If a study suffers from confounding, what is true? The variable of interest is not known.

The researchers are confused by the experiment.

The effects of different variables are mixed, so the researcher cannot determine the effects of the variable of interest.

The variable of interest has no effect on the experiment at all.

i think it's either c or d

step-by-step explanation: the entire question is extremely odd. 04 obviously refers to the interest rate. honestly i will say the answer is c. because the (2 x 12) part would mean it's compounded semiannually. i'll say choose c.

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8