Answer:
the answer is A:
The cost at Store A is $2.00 greater than at Store B.
To solve this problem, we make use of the formula for
Confidence Interval:
Confidence Interval = X ± z * σ / sqrt (n)
where X is the mean value, z is the z score which is taken
from the standard tables, σ is the standard deviation, and n is the number of
samples
z = 1.645 (at 90% Confidence Level)
Substituting the values into the equation:
Confidence Interval = 94 ± 1.645 * 12 / sqrt (70)
Confidence Interval = 94 ± 2.36
Confidence Interval = 91.64, 96.36
Therefore at 90% confidence level, the blood pressure
reading ranges from 91.64 mmHg to 96.36 mmHg.
The answer is B. The reasoning behind this is that an obtuse triangle has one angle that is obtuse. An obtuse angle is any angle that measures greater than 90°.
The smallest prime numbers are 1, 3 and 7.
However they would not work to become a triangle, because the sum of the two
shortest sides should be larger than the length of the longest side.
<span> 1+3 is
less than 7 so it wouldn't work. </span>
The next set of prime numbers is 5,7,11 which I
think is the answer since 5+7 is more than 11 and 5+7+11 is 23 which is prime.
Answers:
<span>23 is the smallest possible prime perimeter</span>
