Ralph wants to build a rectangular deck with a predefined area of 792 feet squared. One side of the deck will be 54 feet longer
2 answers:
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Answer:
a) Destiny can run 1 mile is 6 minutes.
b) Destiny can walk back 1 mile is 16 minutes.
Step-by-step explanation:
The running rate of Destiny is
So, she runs 1 mile in
= 6 minutes
Hence, Destiny can run 1 mile is 6 minutes.
The walking rate of Destiny is
So, she walks 1 mile in
= 16 minutes
Hence, Destiny can walk back 1 mile is 16 minutes.
Answer:
Atleast 315
Step-by-step explanation:
Given that a journalist wants to determine the average annual salary of CEOs in the S&P 1,500. To save time a sample is taken.
s = sample std dev = 449300
Sample size = n
Margin of error = 50000
Z critical = 1.96
Hence 1.96*std error = 50000
std error = 25510.20
Std deviation/sqrt n = 25510.20
Simplify to get
So sample size should be atleast 315