Solve the equation.9x = -45
A. -54
B. 1
C. 54
D. -5
Answer: D
Mathematics
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Evaluate.4 ? 6 - 12 ÷ 3
A. 0 B. 28 C. 4 D. 20
Mathematics
Find the unit tangent vector of the given curve.r(t) = (4 sin3 9t)i + (4 cos3 9t)j
A. T = (sin 9t)i - (cos 9t)j B. T = (108 sin 9t)i -(108 cos 9t)j C. T = (4 cos 9t)i - (4 sin 9t)j D. T = (4 sin 9t)i - (4 cos 9t)j
Mathematics
Establish the identity.cos(3x) = cos3 x - 3 sin2 x cos x
What will be an ideal response?
Mathematics
Add or subtract as indicated.
- 
A. 
B. 
C. 
D. 
Mathematics