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kayleewoodard
11.12.2019 •
Mathematics
The circumference of circle aa is three times the circumference of circle bb. which statement about the areas of the circles is true?
a)the area of circle a is three times the area of circle b.
b)it depends on the value of π.
c)the area of circle a is nine times the area of circle b.
d)it depends on the actual diameters of the circles.
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Ответ:
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.