Find the exact value of the expression using the provided information.Find cos(s + t) given that sin s = - 
, with s in quadrant IV, and 
with t in quadrant II.
A. 
B. 
C. 
D. - 
Answer: A
Mathematics
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Refer to the figure and provide an appropriate name for the indicated angles. 
?3 and ?7
A. Complementary angles B. Alternate interior angles C. Supplementary angles D. Alternate exterior angles
Mathematics
Factor the trinomial completely.4x2y2 + 20xy + 1
A. 4(x2y2 + 5xy + 1) B. (4xy + 1)(xy + 5) C. 4(xy + 1)(xy + 5) D. prime
Mathematics
Translate to a proportion and solve. Round to the nearest hundredth, if necessary.133 is what percent of 70?
A. 190% B. 1.9% C. 19% D. 1900%
Mathematics