Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
n = 8
Step-by-step explanation:
Have a nice day! I hope this helps!
Answer: 99.73%
Step-by-step explanation:
Given : Mean : 
Standard deviation : 
Let X be the random variable that represents the data values.
Formula for Z-score : 
For x=94, we have
For x=106, we have
The probability that the samples are between 94 and 106:-
Hence, the percent of the samples are expected to be between 94 and 106 = 99.73%
Answer:
top right
Step-by-step explanation:
After exchanging his Canadian dollar to U.S dollar, Greg only has 4/5 of 200 which is equal to 160 U.S dollars. He had spent 3/4 of the U.S dollars he has, which means that he had spent 3/4 of 160 or equal to 120 U.S dollars. He is then left with only 40 U.S. dollars.
Answer:
Option B
Step-by-step explanation:
When moving with the current, the speeds of the boat and current will add up. The first situation can then be represented by:
9 = 0.5(x + y)
While opposing the current, the speeds will be subtracted. Forming:
9 = 1.5(x - y)
The second option contains this equation system, so it is correct.
