-12 + 8 - (-9) = 5
Therefore the value of -12 + 8 - (-9) is 5.
10008 hours per 3 years is average of 3336 hours per year, or about 9.1 per day.
The correct answer is option C which is x = y.
<h3>What is the alternate interior angle?</h3>
The angle formed by the line intersecting two parallel lines is called the alternate interior angle. This two angles are equal in magnitude.
In the given figure we can see that the angle x will be equal to the angle y because of the right opposite angles.
Since two parallel lines are cutting the upper part at x so the same lower part will be also x due to corresponding angles.
Now just right opposite to x there is an angle y so the angles x and y will be equal to each other.
Therefore the correct answer is option C which is x = y.
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<h2>
Answer with explanation:</h2>
Let p be the proportion of the correct answers.
As per given , we have
, since the alternative hypothesis is right tailed , so the test is a one -tailed test.
If the student gets 52 answers correct out of 80.
i.e. the proportion of correct answers : 
Test statistic : 
P-value : 
[ by using p-value table for z (right-tailed)]
Since the p-value(0.0037) is less than the significance level (0.05), so we reject the null hypothesis.
Results : We have enough evidence to support the claim that a student knows more than half of the answers and is not just guessing.
Answer:
Average value: 87,125
Step-by-step explanation:
(82,84,84,87,88,90,90,92) ↔ 8
(82+84+84+87+88+90+90+92)/8 = 697/8 = 87,125
