Perform the indicated operations.(5x - 6y)(3x - 9y)

A. 15x2 - 63xy + 54y2
B. 15x2 - 18xy + 54y2
C. 15x2 - 63xy - 63y2
D. 15x2 - 45xy + 54y2


Answer: A

Mathematics

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Provide an appropriate response.Gerald made a trip to his friend's house for a birthday party. His trip is shown below, where his distance (in miles) from home is graphed as a function of the hours past 2:00. Refer to the graph to answer the questions about his trip.(i) What time did he leave home?(ii) When did he realize he forgot his gift?(iii) How far from home was he when he realized he forgot his gift?(iv) What did he do about the forgotten gift?

A. (i) 2:00 (ii) 2:30 (iii) About 1 mile (iv) Bought one at a store on the way B. (i) 2:30 (ii) 2:45 (iii) About 4 miles (iv) Returned home C. (i) 3:00 (ii) 3:45 (iii) About 4 miles (iv) Mailed it later D. (i) 3:30 (ii) 3:45 (iii) About 1 mile (iv) Returned home

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Find the inverse of the function.f(x) = 5x + 3

A. f-1(x) =  - 3
B. Not a one-to-one function
C. f-1(x) = 
D. f-1(x) = 

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Solve the problem.A force of 503 lb is required to pull a boat up a ramp inclined at 18.0° with the horizontal. Approximate the weight of the boat to the nearest pound.

A. 485 lb B. 630 lb C. 478 lb D. 155 lb

Mathematics

Perform the indicated operation.Find the sum of (8 + 4n7 - 3n5) and 

A. 32n12 B. 13n7 + 6n5 + 13 C. 17n7 + 13n5 + 2 D. 13 + 6n7 + 13n5

Mathematics