Solve the compound inequality. Express the solution using interval notation. Graph the solution set.x < 4 or x < 9
A. (4, ?)
B. (4, 9)
C. (-?, 4) ? (9, ?)
D. (-?, 9)
Answer: D
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Find a sample space for an experiment of rolling a dice. ?
A. {1, 2, 3, 4, 5, 6} B. {0, 1, 2, 3, 4, 5, 6} C. {0, 1, 2, 3, 4, 5}
Solve the problem. Express your answer in scientific notation, and round to one decimal place. The mass of an electron is approximately 9.11 × 10-28 grams. Find the mass of 813,000,000 electrons.
A. 7.4 × 10-17 grams B. 7.4 × 10-19 grams C. 7.4 × 10-20 grams D. 7.4 × 10-18 grams
The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring, versus 2 man-hours to make one SST ring.How many of each type of ring should be made daily in order to maximize the company's profit, if the profit on a VIP ring is $50 and the profit on an SST ring is $10?
A. 24 VIP and 4 SST B. 20 VIP and 4 SST C. 24 VIP and 0 SST D. 20 VIP and 0 SST
Write a system of equations for the problem, and then solve the system.Two trains start from towns 572miles apart and travel toward each other on parallel tracks. They pass each other 5.5 hours later. If one train travels 18 mph faster than the other, find the speed of each train.
A. 63 mph; 41 mph B. 61 mph; 43mph C. 51 mph; 53 mph D. 56 mph; 48 mph