10(1/2x + 6) = 8
5x + 60 = 8
5x = 8 - 60
5x = - 52
x = -52/5
Answer:
A , B, and D
Step-by-step explanation:
you find the unit prices by dividing the cost per pound
a bc it sells them at $1.52 per pound
b bc it sells them at $1.49 per pound
NOT c because it sells them at $3.14 per pound
D because it sells them at $1.88 per pound
Answer:
$5.02
Step-by-step explanation:
$2.49 × 2 = $4.98
$10 - $4.98 = $5.02
Answer:
3520 yards
Step-by-step explanation:
1 mile = 1760 yards
2 miles = 2(1760)=3520 yards
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).