Solve the application and answer with a complete sentence. The population of Anna's grandmother's country is 1
times the population of Anna's country. The population of Anna's country is 284 million. What is the population of Anna's grandmother's country?
A. The population is 550 million.
B. The population is 355 million.
C. The population is 71
million.
D. The population is 227
million.
Answer: B
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Solve the problem.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 12 miles? Round your answer to the nearest unit.
A. 248 units B. 222 units C. 205 units D. 186 units
Use a graphing calculator to solve the system by finding A-1 and A-1B. (Round to the nearest integer if necessary.)-5x - 6y - 5z = -84 3x + 8y + 5z = 92-7x - 3y + 8z = -54
A. {(6, 7, 1)} B. {(5, -9, -1)} C. {(9, 1, 9)} D. {(5, 9, 1)}
Factor. Check by multiplying.14x4 + 14x
A. 14x(x3) B. 14(x4 + x) C. 14x(x3 + 1) D. 14(x5 + 1)
Determine the degree of the polynomial.-a + 9a3 - 4a7 + 3a2
A. 4 B. 7 C. 12 D. 13