Solve.The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose the the intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 10 miles? Round your answer to the nearest unit.
A. 320 units
B. 303 units
C. 346 units
D. 284 units
Answer: A
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Solve the problem.A caterer uses special stacking ovens to prepare large amounts of food. Find the total number of servings that can be prepared in one hour.Pizza: 8 servings per panNumber of pans per oven: 6Pan changes per hour: 3Number of ovens: 4
A. 144 servings B. 576 servings C. 192 servings D. 526 servings
Find the area.
A. 968 in.2 B. 550 in.2 C. 1100 in.2 D. 2200 in.2
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.
A. -3 B. -4 C. 3 D. -2
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = 3, y = -1, z = 0; (3, -1, 0) B. x = 0, y = -1, z = 0; (0, -1, 0) C. x = 0, y = 0, z = -1; (0, 0, -1) D. not applicable