pat930
13.10.2020 •
Mathematics
the members of senior class are planning a dance. they use the equation s=2r+t/x to determine the total receipts. what is r in the terms of x,s and t? show all work
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Ответ:
r = 1/2(s -t/x)
Step-by-step explanation:
Here, we simply want to make r the subject of the formula;
We proceed as follows;
s = 2r + t/x
s - t/x = 2r
Divide both sides by 2
r = 1/2(s - t/x)
Ответ:
Please find the attached traced distance time graph
Step-by-step explanation:
The given parameters are;
The time at the start of Don's journey = 2 pm.
The distance Don drives one hour after leaving home = 45 miles
The speed (Distance/time) Don drove during that time = 45/1 = 45 mph
The time at which Don first stop driving = 2 pm + 1 hour = 3 pm
Don then stops for 90 minutes
The time after the duration at which Don stops driving = 3 pm + 90 minutes = 3 pm + 1.5 hours = 4.30 pm
At 4.30 pm. Don then starts driving home at 15 mph
The distance from Don's home from where Don stopped is 45 miles, therefore;
Time (Distance/speed) for Don to get home = 45 miles/15 mph = 3 hours
Time Don arrived home = 4.30 pm + 3 hour = 7.30 pm.