Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.A company produced 2,490,000 small appliances in one year and made a profit of $7,220,000. What was the profit on each appliance?
A. $2.90 × 106
B. $29.00
C. $2.90
D. $2.90 × 103
Answer: C
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The slope of a line varies from point to point on the line.
Answer the following statement true (T) or false (F)
Give a geometric description of the set of points whose coordinates satisfy the given conditions.8 ? y ? 9, 8 ? z ? 9
A. The square with corners at (0, 8, 8), (0, 8, 9), (0, 9, 8), and (0, 9, 9) B. The infinitely long square prism parallel to the x-axis C. The line between the points (0, 8, 8) and (0, 9, 9) D. The cube located in the first quadrant and with sides 8 units in length
Find the focus and directrix of the parabola.y2 = -40x
A. (-10, 0); y = 10 B. (10, 0); x = -10 C. (-10, 0); x = 10 D. (0, -10); y = 10
Find the standard deviation.The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest tenth of a mile the distance they travel one way from home to work. The six distances are listed below. Find the standard deviation. Round your answer to two decimal places. 20.7 23.9 39.9 33.6 12.1 21.6
A. 36.75 mi B. 4,333.64 mi C. 3,840.54 mi D. 9.93 mi