=(15x^2-12x)+(25x-20)
=3x(5x-4)+5(5x-4)
=(5x-4)(3x+5
YOUR ANSWER IS A
Answer:
Floor 76
Step-by-step explanation:
4*6=number of floors in 60 second
100-24=floor 76
Answer:need graph
Step-by-step explanation:
The 99% confidence interval for the population mean is 6± 2.443
<h3>Confidence interval</h3>
The formula for calculating the confidence interval is expressed as:
CI = x± z(s/√n)
GIven the following parameters
x = 6
s = 3
n = 10
z score at 99% = 2.576
Substitute into the formula to have:
CI = 6± 2.576(3/√10)
CI = 6± 2.443
Hence the 99% confidence interval for the population mean is 6± 2.443
Learn more on confidence interval here: brainly.com/question/15712887