Simplify the expression. Assume that all variables are positive.
? 
A. 35
B. 
C. 12
D. 
Answer: D
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 3-2? 34
A. 
B. 6
C. -729
D. 9
Mathematics
Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.Two angles are complementary. Twice one angle plus the other is 130°. Find the measure of each angle.
A. 45°, 45° B. 40°, 50° C. 40°, 140° D. 44°, 42°
Mathematics
Determine whether the data represent direct variation, inverse variation, or neither.
A. Direct B. Neither C. Inverse
Mathematics
Complete the identity.cos (4?) = ?
A. 4 sin ? cos3 ? - 4 sin3 ? cos ? B. 3 sin ? - 4 sin3 ? C. cos3 ? - 3 sin2 ? cos ? D. cos4 ? - 6 sin2 ? cos2 ? + sin4 ?
Mathematics