The discriminant of a quadratic equation is useful in determining the nature of its roots. Further, it can be solved by the equation,
D = b² - 4ac
From the given equation, b = 3, a = 2, and c = -5. Substituting the given to the equation,
D = 3² - (4)(2)(-5) = 49
Thus, the answer is the fourth choice, 49.
She would ride 17,343.75 kilometers in three days because the first day is 7,500 meters and the get the third day you multiply that by .75 which would be 5,625, and to get the third day you would multiply the 5,625 by .75 to get about 4,218. Lastly, you would add the three numbers together
Following are the playback times (in hours) for a sample of 20 MP3 players. 10 , 15, 21, 21, 23, 23, 24, 26, 27, 30, 30, 31, 37
kotykmax [81]
Answer:
The 65th percentile is 37
Step-by-step explanation:
The 65th percentile is the number that splits the data in two groups. The amount of data that is less to the 65th percentile corresponds to the 65% of the data. Since we have 20 value, we calculate the 65% of 20, which is 13. By organazing the data from least to greatest, we count the values in the data set until we reach the 13th value, which in this case is 37.
