A price decreases from $254 to $213.36 . What is the percent of change?
1 answer:
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Answer:
900 miles
Step-by-step explanation:
Given:
Total time taken by Kris is 14 hours.
Speed of Kris is, Speed = 75 mph
Time spent while taking a break is 2 hours.
So, time Kris drove his vehicle is given as the difference of total time and time spent in break. Therefore,
Actual time of driving = 14 - 2 = 12 hours.
Now, distance traveled is given as the product of speed and time of driving.
∴ Distance = Speed Time
Distance =
Therefore, Kris drove 900 miles.
Answer:
He needs a score of 88 on his last test.
Step-by-step explanation:
His mean score is the sum of all his scores dvided by the number of tests. Mathematically, that is:
Zach took four biology tests and got scores of 83, 86, 91, and 77. He needs to complete one more test.
In total there are 5 tests, so
His scores are 83, 86, 91, 77 and x. In which x is his score on the last test. So
If he wants to get an average of 85 on all fve tests, what score does he need on his last test?
This is X when M = 85. So
He needs a score of 88 on his last test.