Nina can ride her bike 63,360 feet in 3,400 seconds, and Sophia can ride her bike 10 miles in 1 hour. What is Nina’s rate in mil
2 answers:
Answer:
Nina's rate is 12.7059 miles per hour (answer rounded up to four decimal places).
Step-by-step explanation:
Nina can ride her bike 63,360 feet in 3400 sec
1 mile = 5,280 feet
How many miles = 63,360 feet ?
Its 63,360 feet ÷ 5,280 feet × 1 mile = 12 miles
Nina's rate is 12 miles per 3400 seconds
1 hour = 3600 seconds
So in 1 hour, Nina rides × 12 miles = 12.7059 miles (rounded up to four decimal places)
Nina's rate is 12.7059 miles per hour (answer rounded up to four decimal places).
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Answer:
40 student 110 adult
this is using desmos
but to smash the equation you can go like basically we have to cancel out each variable to solve for the other
3x + 8y = 1000
x + y < =150
-3(x + y <= 150)
-3x -3y = -450
3x + 8y = 1000
5y = 550
y= 110
3x + 8 y = 1000
-8(x+y<=150) = -8x - 8y <= -1200
-5x = -200
x= 40
40 kids 110 adults
