Solve the problem.The area of a rectangular wall in a classroom is 225 square feet. Its length is 2 feet shorter than three times its width. Find the length and width of the wall of the classroom.
A. width = 9 ft; length = 25 ft
B. width = 9 ft; length = 11 ft
C. width = 9 ft; length = 29 ft
D. width = 9 ft; length = 15 ft
Answer: A
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Solve the problem.The weight of a liquid varies directly as its volume V. If the weight of the liquid in a cubical container 4 cm on a side is 128 g, find the weight of the liquid in a cubical container 3 cm on a side.
A. 27 g B. 54 g C. 6 g D. 15 g
Find the difference.-12 - 25
A. 37 B. -13 C. 13 D. -37
Solve the problem.x varies inversely as v, and x = 72 when v = 4. Find x when v = 32.
A. x = 9 B. x = 36 C. x = 8 D. x = 16
Solve the problem.A politician is planning to spend a total of 40 hours on a campaign swing through the southern states of Arkansas, Louisiana, Mississippi, Alabama, and Georgia. Assume that he spends the same amount of time in Mississippi as in Alabama; half the amount of time in Georgia as in Arkansas; and the same amount of time in Mississippi, Alabama, and Georgia (combined) as in Arkansas and Louisiana (combined). How can he distribute his time among the five states? (Let a be the hours spent in Arkansas, b the hours spent in Louisiana, c the hours spent in Mississippi, d the hours spent in Alabama, and e the hours spent in Georgia. Let e be the parameter.)
A. a = 2e, b = 20 - e, c = 10 - e/2, d = 10 - e/2, 0 ? e ? 10 B. a = e, b = 20 - e/2, c = 10 - e/4, d = 10 - e/4, 0 ? e ? 20 C. a = 2e, b = 20 - e, c = 10 - e, d = 10 - e, 0 ? e ? 20 D. a = 2e, b = 20 - 2e, c = 10 - e/2, d = 10 - e/2, 0 ? e ? 10