The height above ground, S (in feet), of a ball thrown vertically into the air is given by 
, where t is the time in seconds since the ball was thrown. Graph this equation with a graphing utility and the range 
. Estimate the time at which the ball is at
its highest point. Round your answer to two decimal places.
?
A. 9.25
B. 0.22
C. 0.05
D. 18.50
E. 4.63
Answer: E
Mathematics
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Multiply.(-5)(-6)
A. 30 B. -30 C. 11 D. -11
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For the compound inequality, decide whether intersection or union should be used. Then give the solution set in both interval and graph forms.x ? -5 and x < 10
A. Intersection; ?
B. Union; (-?, ?)
C. Intersection; (-5, ?)
D. Intersection; [-5, 10)
Mathematics
Factor the polynomial completely.x2 - y2 + 10y - 25
A. (x + y - 5)(x - y - 5) B. (x - y - 5)(x - y + 5) C. (x + y - 5)(x - y + 5) D. (1 - 5)(x + y)(x - y)
Mathematics
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.
A. 3x29/20 B. 3x19/20 C. 9x19/20 D. 9x29/20
Mathematics