Graph the system of inequalities, and find the coordinates of the vertices.y ? 4 - 2xx ? 1
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use a graphing calculator to find the inverse of the matrix.
a. 
b. 
c. 
d. 
e. 
Mathematics
Provide an appropriate response.Find equations for the tangents to the curves y = tan 2x and y = -tan(x/2) at the origin. How are the tangents related?
What will be an ideal response?
Mathematics
Differentiate the function.r(t) = (8t2 + 15)i + 
j
A. r'(t) = (16)i + 
j
B. r'(t) = (16t)i + 
j
C. r'(t) = (16t)i - 
j
D. r'(t) = 
i + (16t)j
Mathematics
Solve the problem.The rate at which an assembly line worker's efficiency E (expressed as a percent) changes with respect to time t is given by 
where t is the number of hours since the worker's shift began. Assuming that 
find E(t).
A. E(t) = 55t - 2t2 + 141 B. E(t) = 55t - 2t2 + 35 C. E(t) = 55t - 4t2 + 35 D. E(t) = 55t - 2t2 + 88
Mathematics