Solve the problem.The normal gasoline mileage of a car is 46 mpg. On a smooth road, its mileage is 12% higher. What is its mileage on a smooth road? Round your answer to the nearest tenth.
A. 50 mpg
B. 5.5 mpg
C. 46 mpg
D. 51.5 mpg
Answer: D
Mathematics
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Find the mass of the wire that lies along the curve r and has density ?.r(t) = 10i + (7 - 3t)j + 4tk, 0 ? t ? 2? ; ? = 4(1 + sin 4t)
A. 40? units B. 8? units C. 10 + 40? units D. 20 + 40? units
Mathematics
Find a ? b.a = 4i + 5j, b = 2i + 4j
A. 
B. 28
C. 
D. 12
Mathematics
Multiply. Write the answer in simplest form.2
× 
A. 
B. 4
C. 
D. 2
Mathematics
Simplify the expression by combining like terms.- 
(z - 12) - 
z
A. 
z + 12
B. 
z + 8
C. - 
z + 8
D. 
z - 8
Mathematics