Solve the equation for exact solutions.4 cos-1 x = ?
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Prove that the equation is an identity.cos2(A - B) - cos2(A + B) = sin 2A sin 2B
What will be an ideal response?
Mathematics
Provide an appropriate response.Four gallons of pesticide are used to treat a field that measures 4,225 ft.2 in area. Find the constant of variation and solve to find how many gallons of pesticide are needed in order to treat another field that measures 7,390 ft.2 Round to nearest whole gallon.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Complete the square to write the function in the form 
f(x) = -x2 + 11x - 5
A. f(x) = - 
2 + 
B. f(x) = - (x + 11)2 - 247
C. f(x) = -(x - 11)2 - 5
D. f(x) = - 
2 - 
Mathematics
Solve the equation.13.8 = 2.3c
A. 5 B. 6 C. 11.5 D. 10.5
Mathematics