Use the properties of real numbers to simplify the expression.5s - 7t
A. -2s
B. -2st
C. Cannot be simplified
D. -2t
Answer: C
Mathematics
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Use the fundamental identities to simplify the expression.
+ sec ? cos ?
A. 1 B. tan2? C. csc2? D. sec2?
Mathematics
Find possible value(s) of ? in the interval [0°, 360°) with the given trigonometric function value.cos ? = 
A. 60°; 300° B. 60°; 120° C. 150°; 210° D. 210°; 330°
Mathematics
Determine whether f is continuous at c.f(x) = 
; c = 7
A. not continuous B. continuous
Mathematics
Identify the digit with the given place value.41,836.5ones
A. 5 B. 60 C. 6 D. 0.6
Mathematics