Perform the indicated operation.-2.1 + (-7.7)

A. 9.8
B. 5.6
C. -9.8
D. -5.6

Answer: C

Mathematics

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A. - 6561 B. No solution C. 9 D. 6561

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Use a sum-to-product identity to rewrite the expression.cos 18° - cos 24°

A. -2(cos (21.0°) sin (-3.0°)) B. -2(cos (21.0°) cos (-3.0°)) C. -2(sin (21.0°) sin (-3.0°)) D. -2(sin (21.0°) cos (-3.0°))

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Solve the equation.x(5x + 10) = 0

A.
B. {0, 2}
C.
D. {0, -2}

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Provide an appropriate response.In the given problem  ÷  = , what must be the factors that are represented by the question mark?

A. (y - 3)(y + 3)
B. (y + 3)2
C.
D.

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