Write the number in scientific notation.780,000

A. 7.8 × 105
B. 7.8 × 106
C. 7.8 × 10-5  
D. 7.8 × 10-6


Answer: A

Mathematics

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Solve the problem.If a license plate consists of four digits, how many different licenses could be created having at least one digit repeated.

A. 4960 B. 10,000 C. 3024 D. 5040

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Solve the problem. Round your answer, if appropriate.One airplane is approaching an airport from the north at 140 km/hr. A second airplane approaches from the east at 265 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 30 km away from the airport and the westbound plane is 21 km from the airport.

A. -534 km/hr B. -133 km/hr C. -400 km/hr D. -267 km/hr

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Find the quadratic function that fits the set of data points.(-2, -5), (-3, -2), (-9, 142)

A. f(x) = -3x2 - 12x - 7 B. f(x) = 3x2 + 2x + 5 C. f(x) = 3x2 + 12x + 7 D. f(x) = -3x2 + 12x + 5

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