Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.f(x) = -4x2 - 8x
A. minimum; - 4
B. minimum; 4
C. maximum; - 4
D. maximum; 4
Answer: D
Mathematics
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Provide an appropriate response.The two circles have radii of 10 and 24 respectively. The distance between their centers is 46. What is x, the length of one of their common tangents?
A. 8
B. 2
C. 12
D. 12
Mathematics
Verify that the equation is an identity.cos
= 
cos x - 
sin x
What will be an ideal response?
Mathematics
Find the amount of sales tax or tax rate and the total cost. Round money answers to the nearest cent if necessary.Amount of sale: $960 Tax rate: 7%
A. $67.20, $1027.20 B. $672.00, $1632.00 C. $57.60, $1017.60 D. $76.80, $1036.80
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 
B. 
C. 
D. 
Mathematics