In a study of reaction times to a specific stimulus, a psychologist recorded these data (in seconds). Find the variance and stan
1 answer:
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Answer:
$4800
Step-by-step explanation:
Let x be the C.P of the painting.
Profit=10% of x
Profit=
If S.P increase by 240 then
Profit=15% of x=
For first case
S.P=C.P+ Profit
S.P=x+10x/100
S.P=
For second case
New S.P
=
According to question
Hence, the C.P of the painting=$4800
So we have the equation 
, and we want to solve for 
.
First, we are going to apply the log of a power rule:
Next, we are going to divide both sides of the equation by
:
Last but not least, we can use a calculator to evaluate the right hand side of the equation:
We can conclude that the solution of our logarithmic function is. I don't know who told you that the correct answer is 8, but they is wrong.
First, we are going to apply the log of a power rule:
Next, we are going to divide both sides of the equation by
Last but not least, we can use a calculator to evaluate the right hand side of the equation:
We can conclude that the solution of our logarithmic function is