Answer: 554
Step-by-step explanation:
Formula we use to find the sample size :
Given : Standard deviation :
Margin of error : E=one quarter hour = 0.25 hour
Two-tailed , Critical value use for 0.95 degree of confidence:
i.e.
Hence, the required sample size = 554
i.e. 554 executives should be surveyed.
Answer:
g(r - 9) = r² - 18r + 89
Step-by-step explanation:
To evaluate g(r - 9), substitute p = r - 9 into g(p) , that is
g(r - 9) = (r - 9)² + 8 ← expand factor using aFOIL
= r² - 18r + 81 + 8
= r² - 18r +89
<span>-16r^3 - 6r^2 - 18r = -2r(8r^2 + 3r + 9)
hope that helps</span>
Answer:
b
Step-by-step explanation: