Answer:
To find the sum of interior angles in a polygon, we can use the formula:
where n is the number of sides.
Since this is pentagon (5 sides), then
The missing angle would then be
Since angles on a straight line add up to 180, then
A group of band instructors answered a survey about hours of rehearsal per week and number of competitions won. The graph shows
2 answers:
Answer: B. 31
Step-by-step explanation:
This linear regression was constructed by relating the hours practiced per week and the number of competitions won.
Going by this graph, the number of competitions they can expect to win at 5 practices a week is 31.
This is derived by looking for the point where 5 competitions on the x-axis intersects with the line. This point is at 31 competitions on the y axis which would make it the answer.
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Answer:
Step-by-step explanation:
Comparing it with quadratic equation , we get:
a = 1 . b = 4 and c = 5
So,
Discriminant =
D = (4)²-4(1)(5)
D = 16 - 20
D = -4
Hence,
Discriminant = -4
Hope this helped!
<h3 /><h3>~AH1807</h3>