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
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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
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?
A. 61 B. 57 C. 60 D. 63
Find the function value.Let f(x) = x2 - 4x - 4. Find f(-2).
A. -8 B. 8 C. 16 D. 0
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