It will take 20 seconds to move from one end to another because if 20 feet is moved within 5 seconds, do that 4 more times to get to 80. Finally, multiply 5 by 4 to get 20 seconds.
Answer:
x =3
y = 2
y= 15/8 (3) + 2
Step-by-step explanation:
Answer:
7 :)
Step-by-step explanation:
Answer:
1.28
Step-by-step explanation:
Given a confidence (c) = 0.80
α = 1 - c = 1 - 0.8 = 0.2
α/2 = 0.2/2 = 0.1
From the normal distribution table, The critical value necessary to form a confidence interval is gotten by getting the z value of α/2, which is the same as that of 0.4 (0.5 - 0.1). The z value of α/2 is:

Ax is the answer if not wrong please brainlies