Find the exact value of the expression.cos-1 (-1)
A. 0
B. 2?
C. 
D. ?
Answer: D
Mathematics
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Approximate 
using a Reimann sum with n = 4 .
What will be an ideal response?
Mathematics
Simplify the expression.
?
?
Write the answer without using negative exponents. Assume that the variable is restricted to those numbers for which the expression is defined.
What will be an ideal response?
Mathematics
Find the inverse of the matrix.
a. 
b. 
c. 
d. 
e. 
Mathematics
Write the fraction as a decimal, rounded as indicated.
to the nearest thousandth
A. 0.868 B. 0.864 C. 0.667 D. 0.867
Mathematics