On a standardized exam, the scores are normally distributed with a mean of 140 and a standard deviation of 40. find the z-score of a person who scored 48 on the exam.

answer:

step-by-step explanation: kiwkskkwkw

rounding to the nearest thousandth would be 452,000

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation: