Answer:
n = 13
Step-by-step explanation:
The sum of the measures of the interior angles of an n-sided polygon is
(n - 2)180
Set (n - 2)180 equal to 1980 and solve for n.
(n - 2)180 = 1980
Divide both sides by 180.
n - 2 = 11
Add 2 to both sides.
n = 13
Answer:
45.3 miles/h
Step-by-step explanation:
The answer is 45.3 miles/h
Mixing the two concentrations would give a new concentration which is in between 50 - 60% .
D. 63% cannot be obtained
It really depends on what kind of problem. like if you are doing a word problem or whatever than you should read the question a couple times, underline key words, DECIDE which operation to use, refer to the question and see if it makes sense. Hope I helped :)
Answer:You will need to identify first
Step-by-step explanation: