Add the totals of the marks up and divide by the number of marks there are.
Chat with our AI personalities
You can't.You only know what half the sum of (initial + final) is, (it's the average), but you don't know what the initial and final are.
The last moment, the speed is the final, the first moment, the speed is zero, average=final /2. For the bit just before the final, and the bit an equal bit just after the start the average is again final/2. For every instant before the final, coupled with the same instant after the start, the average is final/2. So the average for the whole trip is final/2. So to get the final, multiply the average by 2.
28.5%
You need at least a 75% on your exam.
If final is 25% of grade and your average was 82 before final that part is 75%. So we have (.75(82) + .25 (73)) = 80