Classify the angle as acute, right, obtuse, or straight.55°
A. acute
B. right
C. straight
D. obtuse
Answer: A
Mathematics
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Solve the problem.Suppose that R ={(x, y): 0 ? x ? 4, 0 ? y ? 4}, and P is the partition of R into four equal squares by the lines x =2 and y = 2. 
approximate 
dA, by calculatiang the Riemann sum 
, assuming that 
are the centers of the four squares.
A. 320 B. 1280 C. 640 D. 140
Mathematics
Find the domain of the composite function (g ? f)(x). Write the domain in interval notation.f(x) = 
, g(x) = 4x6
A. (-?, ?) B. (-?, 5) ? (5, ?) C. (-?, 0] D. (-?, 0) ? (0, ?)
Mathematics
Find the function value.Let f(x) = x2 + 5x + 1. Find f(1).
A. -5 B. -3 C. 5 D. 7
Mathematics
Determine what, if any, value to assign to 
to make f continuous at 
.
?
; 
?
A. 
B. 
C. 
D. 
E. No value of 
will make it continuous at 0.
Mathematics