Add or subtract as indicated.(6n5 - 2n4 - 9n) + (4n5 + 6n4 + 5n)

A. 10n10
B. -5n5 + 12n4 + 3n
C. 10n + 4n5 - 4n4
D. 10n5 + 4n4 - 4n

Answer: D

Mathematics

Multiply and simplify. Assume that all variables in a radicand represent positive real numbers. ?

A. 2x⁹y²
B. 2x⁹y²
C. 2x⁸y²
D. 2x⁹y²

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Mathematics

Find the exact value of the expression.sin 2745°

A. -
B. -
C. 2
D. -

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Mathematics

Evaluate the sum. Round to the nearest hundredth, if necessary.

A. 70 B. 86 C. 38 D. 96

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Mathematics

Write the percent problem as a proportion and solve.100% of what number is 9?

A. 18 B. 100 C. 9 D. 1

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Mathematics