Solve the problem. Round to the nearest tenth.A flagpole casts a shadow 28 feet long. At the same time, the shadow cast by a 39-inch-tall shrub is 78 inches long. Find the height of the flagpole.
A. 12.5 ft
B. 56.0 ft
C. 54.5 ft
D. 14.0 ft
Answer: D
Mathematics
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Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.x2y < 0
A. y must be negative. B. x and y have different signs. C. x and y must be negative. D. x must be negative.
Mathematics
Find a system of inequalities with the given graph.
A. y > -4 x ? 2 B. x > -4 y ? 2 C. y ? -4 x ? 2 D. y > -4 x ? -4
Mathematics
Solve the problem.Find the minimum value of f = 4x + 5y subject to the following constraints. 2x - 4y ? 10 2x + y ? 15 x ? 0 y ? 0
A. Minimum of 39 B. Minimum of 75 C. Minimum of 33 D. Minimum of 20
Mathematics
Solve the inequality algebraically. Express the solution in interval notation.
< 0
A. (-5, 6) B. (-?, -5) C. (6, ?) D. (-?, -5) ? (6, ?)
Mathematics