Substitute to find the value of the expression.Traveling at r kilometers per hour for t hours, a driver will travel rt kilometers. How far will Danny travel in 12 hours at a speed of 54 kilometers per hour?

A. 4.5 km
B. 648 km
C. 648 mi
D. 66 km


Answer: B

Mathematics

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Simplify.(2t5)-2

A.
B.
C.
D. 4t10

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Solve. Round to the nearest tenth.A 26-ft-tall ladder is placed so that it reaches 20 ft up on the wall of a house. How far is the base of the ladder from the wall of the house?

A. 1076 ft B. 32.8 ft C. 16.6 ft D. 276 ft

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Given matrix A, find the indicated minor or cofactor.Find the cofactor A12.A = 

A. 6 B. -1 C. 3 D. 1

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Evaluate the algebraic expression for the given value or values of the variable(s).x2 - 2(x - y);x = 8 and y = 3

A. 45 B. 54 C. -74 D. 51

Mathematics