Write the number in scientific notation.777,087
A. 7.77087 × 101
B. 7.77087 × 10-5
C. 7.77087 × 106
D. 7.77087 × 105
Answer: D
Mathematics
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Simplify the expression. Assume all variables represent nonnegative real numbers. Write the answer in exponential form when necessary.(256x4y-16)1/4(x2y-1/3)
A. 
B. 
C. 4x3y13/3
D. 
Mathematics
Evaluate or simplify the given expression.cos(2 sin-1 x)
A. 2x2 + 1 B. 1 - 2x2 C. 1 D. 1 - x2
Mathematics
Provide an appropriate response. Jim can paint a house in 5 days. Joe paints the same house in 7 days. Marvin takes 9 days to do the job. How long will take if all three work together to paint 2 houses of the same size?
A. 4.4 days B. 3.4 days C. 21 days D. 2.2 days
Mathematics
Solve the equation.2 tan-1 4x = 
A. x = 0
B. x = 4
C. x = 1
D. x = 
Mathematics