Solve the problem.The temperature at 5:00 was -6°C. Four hours later, it was -10°C. What was the change in temperature?

A. -16°C
B. -4°C
C. 4°C
D. 16°C


Answer: B

Mathematics

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A. y B. xz C. 2yz D. 2xy

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Simplify the complex rational expression.

A.
B.
C.
D.

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Multiply and write the result in standard form.4i(5 - 4i)

A. 20i - 16i2 B. 20i - 16 C. 16 + 20i D. 20i + 16i2

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Provide an appropriate response.The average of a group of positive numbers is a    number.

Fill in the blank(s) with the appropriate word(s).

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