Use the given information to find the exact value of the trigonometric function.sin ? = - 
, ? lies in quadrant IV
Find cos 
.
A. 
B. 
C. - 
D. - 
Answer: C
Mathematics
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Determine if the given set of whole numbers is closed under multiplication.{1, 2, 3, 4, . . . }
A. Closed B. Not closed
Mathematics
Provide an appropriate response.Solve the following system of equations using the substitution method: 3a + b = -1 a - 2b = 16
Fill in the blank(s) with the appropriate word(s).
Mathematics
Use the power rules to simplify the expression. Use positive exponents to write the answer.
-4
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The length of a rectangle is 5 feet more than the width. If the area is 66 square feet, find the length and the width. (The formula for the area of a rectangle is A = LW.)
A. Length = 16; width =11 B. Length = 16; width = 6 C. Length = 11; width = 6 D. Length = 11; width = 11
Mathematics