Answer:
49Pi cm^2
Step-by-step explanation:
Area of a circle = Pi r^2
Radius r = 7
Area = Pi x 7^2
= Pi x 7 x 7
= 49Pi cm^2
Answer:
$5.50
Step-by-step explanation:
k lets say x=movies while y=games
so, lets make a system of equations
2x+3y=14.50
3x+y=9.50
you can do substitution or elimination here it doesn't matter but you get x=2; y=3.5
movies cost 2 bucks, while games cost $3.50
so total is 3.50+2
if you still want instruction on how to solve a system of equations leave a comment and i'll help
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The average speed is 8 miles/hour
Step-by-step explanation:
The course is 2/5 of a mile long, this means it is 0.4 miles long.
Distance covered in 4 laps will be ; 4×0.4=1.6 miles
Time taken to cover the four laps = 12 minutes = 12/60 hours = 0.2 hrs
Average speed = Distance/ time
Average speed = 1.6/0.2 = 8 miles/hour
Learn More
Average speed :brainly.com/question/5898263
Keywords: average, speed, laps, course, miles per hour, competition
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Answer:
i don't know sorry
Step-by-step explanation:
Forget me ok