60 divide dos by 15 is 4, so it takes 4 minutes for each person to empty it.
25 x 4 = 100, so the answer would be 100 minutes.
Answer:
A. -1.6; not significant
Step-by-step explanation:
The z-score of a data set that is normally distributed with a mean of
and a standard deviation of
, is given by:
.
From the question, the test score is:
, the mean is
, and the standard deviation is
.
We just have to plug these values into the above formula to obtain:
.
This simplifies to:
.
.
We can see that the z-score falls within two standard deviations of the mean.
Since
the value is not significant.
The correct answer is A. -1.6; not significant
Answer:
-13 and -2
Step-by-step explanation:
Y = 2x + 9.74
x = number of years owned
y = total value in dollars
y = 2(0) + 9.74
y = 9.74
Substitute x with 0 because the question asks what is the value of coin when consuelo originally purchased it. So, at the time of purchase it's been 0 years since he owned it.