Write the expression in terms of sines and/or cosines, and then simplify.sin2 x + sin x - 1 + cos2 x
A. 
B. 
C. 
D. sin x
Answer: D
Mathematics
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = (5t sin t + 5 cos t)i + (5 t cos t - 5 sin t)j ; -1 ? t ? 4
A. 75 B. 37.5 C. 42.5 D. 85
Mathematics
Create the requested display.The traveling times in minutes for 15 workers randomly chosen at an office are: 55, 40, 35, 30, 50, 45, 25, 15, 50, 45, 35, 30, 45, 50, 45Create a dotplot of the data.
What will be an ideal response?
Mathematics
Determine whether the equation is an identity, a conditional equation, or an inconsistent equation.5x + 3 - 7x + 4 = 2x - 4x + 4
A. Identity B. Conditional equation C. Inconsistent equation
Mathematics
Perform the operation indicated. Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics