You did give the correct answer .
<span> let x = # of adult tickets
sold, thus the # of children tickets
= 70-x</span>
<span> 7.5x + 5(70-x) = 450</span>
<span> ^ 7.5x + 350 -5x = 450</span>
<span> ^ 2.5x = 450-350= 100</span>
<span> x = 40 adults
tickets thus
70—40 = 30 children tickets</span>
64 miles per hour = x feet per second
Convert your units:
1 mile = 5280 feet
1 hour = 3600 seconds
64 miles/hour = 64(5280feet/3600seconds)
= 33792 feet / 3600 seconds = 9.386 feet / second
Therefore, 64 mi/h = 9.39 ft/s.
1. true
2. false
3. true
4. false
5. true
The circumference should be 43.98
