Simplify 
and write the answer in standard form.
a. 
b. 
c. 
d. 
e. 
c.
Mathematics
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Estimate the answer by using front end rounding.
A. 9000 B. 8900 C. 10,890 D. 9100
Mathematics
Find the exact value.Given that sin ? = - 
with ? in quadrant IV, find cos 2?.
A. 
B. - 
C. - 
D. 
Mathematics
Convert as indicated.2.9 m to inches
A. 114.2 in B. 3.2 in C. 104.4 in D. 7.4 in
Mathematics
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = cos x + 3, [0, 2?], right-hand endpoint
A. 
B. 
C. 
D. 
Mathematics