Use the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the sequence with the given first term, a1, and common ratio, r.Find a9 when a1 = 50,000, r = 0.1.
A. 0.000005
B. 0.0005
C. 0.00005
D. 50,000.8
Answer: B
Mathematics
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A certain resistor has a resistance of
Simplify the right hand side of this equation.
Mathematics
Verify the identity.cos (x - y) - cos (x + y) = 2 sin x sin y
What will be an ideal response?
Mathematics
Find the derivative of the function.y = x6cos x - 12x sin x - 12 cos x
A. 
= x6 sin x - 6x5 cos x + 12x cos x
B. 
= - x6 sin x + 6x5 cos x - 12x cos x - 24 sin x
C. 
= - x6 sin x + 6x5 cos x - 12x cos x
D. 
= - 6x5 sin x - 12 cos x + 12 sin x
Mathematics
The center and radius of a circle are given. Write the equation of each circle in standard form.Center: (0, 5), r = 2
A. (x - 5)2 + y2 = 4 B. (x + 5)2 + y2 = 4 C. x2 + (y - 5)2 = 4 D. x2 + (y + 5)2 = 2
Mathematics