For the given parabola, use the discriminant to determine the number of x-intercepts.y = -x2 + 7x - 5
A. one x-intercept
B. no x-intercepts
C. two x-intercepts
Answer: C
Mathematics
You might also like to view...
Solve the equation by completing the square.9x2 + 2x - 7 = 0
A. 
, 1
B. 
, -1
C. 
, -1
D. No real solution
Mathematics
Solve the problem.The concentration C (arbitrary units) of a certain drug in a patient's bloodstream can be modeled using 
where t is the number of hours since a 500 milligram oral dose was administered. Using the TABLE feature of a graphing utility, find the time at which the concentration of the drug is greatest. Round to the nearest tenth of an hour.
A. 5.2 hours B. 6 hours C. 6.7 hours D. 7.5 hours
Mathematics
Use a half-angle formula to find the exact value of the expression.cos 
A. - 
B. - 
C. 
D. 
Mathematics
1/6
Given 
6 = 1.2925 and 
10 = 1.6610, find.
Mathematics