There are frogs and koi in a pond and the number of frogs and the number of koi in the pond are independent. Let the x represent the number of frogs in any given week, and let y represent the number of koi in any given week. X had a mean of 28 with a standard deviation of 2.7, and y has a mean of 15 with standard deviation of 1.6. Which answer choice correctly calculates and interprets the standard deviation of the difference, D=X-Y?

answer: a

step-by-step explanation:

if xy ~ yz therefore xy would be the same length as yz

56

step-by-step explanation:

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:

i dont understand

step-by-step explanation: