Answer:
-5.25
Step-by-step explanation:
-3(-a+2)=7a+15
=>3a-6=7a+15
=>-15-6=7a-3a
=>-21=4a
=>a=-21/4=-5.25
hope this helps please mark as brainliest:)
Answer:3 and 1/8
Step-by-step explanation:by adding
Answer:
Step-by-step explanation:
Using the mean concept, it is found that the average score of Adrian’s favorite team relative to its opponent using the observations Adrian made during the game is of -0.3333.
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The mean of a data-set is given by the sum of all observations divided by the number of observations.
Adrian looked the scores every 10 minutes in 2 hours, thus 12 times, as .
4 times ahead by 3 points, thus
4 times behind by 4 points, thus
At the other moments, the game was tied, thus the observation is 0.
Thus, the mean is of:
The average score of Adrian’s favorite team relative to its opponent using the observations Adrian made during the game is of -0.3333.
