Write the expression in the standard form a + bi.(2 + 6i)(2 - 6i)

A. 4 - 36i2
B. -32
C. 40
D. 4 - 36i


Answer: C

Mathematics

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Find the indicated measure of central tendency.The speeds (in mph) of the cars passing a certain checkpoint are measured by radar. The results are shown below. Find the midrange.44.2?41.0?43.0?40.9?43.040.4?44.7?41.5?44.2?42.844.0?41.5?40.9?44.0?41.0

A. 42.8 B. 4.30 C. 42.30 D. 42.55

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Solve the problem.A teacher allows the students to each "throw out" their lowest test score in order to increase their overall grade. The original mean score of 5 tests is 75.4. After the removal of the lowest test, the mean score becomes 79.25. What is the score of the removed test?

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Find the function value.Let f(x) = x2 - 4x - 4. Find f(-2).

A. -8 B. 8 C. 16 D. 0

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Convert the angle in degrees to radians. Express the answer in decimal form, rounded to two decimal places.3°

A. 0.02 B. 0.04 C. 0.03 D. 0.05

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