Your answer is D you’re welcome!
Answer: The sample mean is 14.98
The second one is NOT standard deviation
Step-by-step explanation: Sorry thats all i got but good luck!
So if you subtract the 0 out from the left side, the equation is now

. Since a x is common in both of the terms on the left side, you can factor it out, now making the equation look like

. When factoring, each of the separate things (x and (x-3)), must equal zero while the other one doesn't matter. So in order for the equation to be 0, the only potential options for x is 0 and 3. Therefore x=0 and x=3 are the two solutions
X/15=4/16 def of similar triangle by AAA
x = 60/16=5/2
In 8rows and 3 in each so 8 times 3 is 24