Find all solutions in the interval [0, 2?).cos2x + 2 cos x + 1 = 0
A. x = 
, 
B. x = ?
C. x = 
, 
D. x = 2?
Answer: B
Mathematics
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Solve the problem.The maximum distance d in kilometers that you can see from a height h in meters is given by the formula 
How far can you see from the top of a 
building? (Round to the nearest tenth of a kilometer.)
A. 77.6 km B. 22.2 km C. 41.5 km D. 918.6 km
Mathematics
Use the commutative and/or associative laws to rewrite the given expression. Label each step with a reason.(x + 9) + 9 as 18 + x
What will be an ideal response?
Mathematics
Evaluate 
at the indicated value of x. Round your result to three decimal places.
?
?
A. 5.682 B. 1.5 C. -0.176 D. -5.682 E. 0.176
Mathematics
Solve for the indicated variable.A = bh, for h
A. h = Ab
B. h = 
C. h = 
D. h = A - b
Mathematics