Provide an appropriate response.Suppose the height h in feet of fireworks fired straight upward from the ground is given h = 160t - 16t2 where t is in seconds. When will the fireworks be 400 feet off the ground?
Fill in the blank(s) with the appropriate word(s).
5 seconds
Mathematics
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Find a 95% confidence interval for the true population proportion.In a survey of 227 adults, 28% said that they had tried acupuncture at some point in their lives.
A. 24.7% to 31.3% B. 27.9% to 28.1% C. 27.6% to 28.4% D. 21.4% to 34.6%
Mathematics
Provide an appropriate response.Solve the system of equations using the addition method:m - 2n =75m - 10n = 35
A. m = 0, n = -3
B. inconsistent, no solution
C. dependent, many solutions
D. m = 7, n = 0
Mathematics
Simplify and reduce to lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics
Find the derivative of the function by using the rules of differentiation.
?
?
A. 
B. 
C. 
D. 
Mathematics