Sample Response: Both are correct. As long as
inverse operations and the properties of equality are
used properly, both methods will generate the same
solution. They both isolate the variable on one side of
the equation.
What did you include in your response? Check all that
apply.
Both boys are correct.
Both methods correctly use the properties of
equality and inverse operations.
Both methods isolate the variable on one side of
the equals sign.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

1/800 is the right answer

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice