Answer:
3rd option
Step-by-step explanation:
(
)(x)
= 
=
← factorise numerator and denominator
=
← cancel (2x + 1) on numerator/ denominator
= 
Answer:
Correct option: B
Step-by-step explanation:
The professor can perform a One-mean <em>t</em>-test to determine whether the average score of the students in his class is more than the average score of all the students attending university.
A <em>t</em>-test will be used instead of the <em>z</em>-test because the population standard deviation is not provided instead it is estimated by the sample standard deviation.
The hypothesis for this test can be defined as follows:
<em>H₀</em>: The average score of the students in his class is not more then the entire university, i.e. <em>μ ≤ 35</em>.
<em>Hₐ</em>: The average score of the students in his class is more then the entire university, i.e. <em>μ > 35</em>.
Given:

The test statistic is:

Thus, the correct option is (B).
Over 7 hours the temperature changed 35 degrees
35/7 gives you 5 degrees per hour
1.3 inches.
You take 650 miles divided by 500 miles per inch.