Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m
B. 21 + m
C. 21 + 7m
D. 21 + 3m
Answer: D
Mathematics
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Find the equation of the curve described by the given information.Ellipse: center 
, focus 
, vertex 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the length of an arc intercepted by a central angle ? in a circle of radius r. Round your answer to 1 decimal place.r = 16.12 ft; ? = 
radians
A. 9.2 ft B. 13.8 ft C. 4.6 ft D. 2.3 ft
Mathematics
Give a rule for the piecewise-defined function. Then give the domain and range.
A. f(x) = 
; Domain: (-?, 0) ? {5}, Range: (-?, ?)
B. f(x) = 
; Domain: (-?, ?), Range: (-?, 0] ? {5}
C. f(x) = 
; Domain: (-?, ?), Range: (-?, 0) ? {5}
D. f(x) = 
; Domain: (-?, 0] ? (5), Range: (-?, ?)
Mathematics
Write as a decimal.0.9%
A. 0.009 B. 0.9 C. 0.09 D. 0.01
Mathematics