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Answer: D) 4</h3>
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Explanation:
The width of the confidence interval is 20-12 = 8 units. That cuts in half to get 8/2 = 4 which is the margin of error.
The center of the confidence interval is (12+20)/2 = 32/2 = 16. Add four onto this to get 16+4 = 20, which is the right endpoint. Subtract four from the center to get 16-4 = 12, which is the left endpoint.
Effectively, it's like saying "an archer aims for the value 16 on the number line, and the arrow could land as high as 20 or as low as 12".
Answer:
Angles are measure of rotation, along with its direction of rotation. The supplement angle of 77° is 103°
How to find the supplement angle of an angle?
Supplement angle of an angle is such that sum of both of them comes as 180°
Thus, if an angle is of A°, then its supplementary angle is 180° - A°
For the given case, we let the first angle be of A° = 77°, then its supplementary angle with measure B° is:
Thus, The supplement angle of 77° is 103°
The output of the given algebra b = -1 - 7a with the given input of a = 6 is calculated to be; b = -43
<h3>How to solve basic algebra?</h3>
We are given the algebra;
b = -1 - 7a
where;
a is the input
b is the output
Now, we are given the value of the input to be a = 6
Thus, output is calculated as;
b = -1 - 7(6)
b = -1 - 42
b = -43
Thus, the output of the given algebra with the given input is -43.
Read more about algebra at; brainly.com/question/723406
The energy needed to break the bonds of 2 moles of O2 gas would be 968 jk/mol.
<h3>What is a chemical bond?</h3>
A bond is a term that refers to the attractive interaction between atoms and molecules.
The energy needed by moles to interact is measured in joules per mole and is represented as follows:
In the case of O2 moles, they require 494 jk/mol, therefore, if we need to separate 2 moles of O2, we need 968 jk/mol.
Learn more about moles in: brainly.com/question/15209553
