Find the first term and the common ratio of the geometric sequence.?3, ?7, ?11, ?15, . . .
A. a1 = ?3, r = 4
B. a1 = ?3, r = ?4
C. a1 = ?3, r = 7/3
D. a1 = ?3, r = ?7/3
Answer: B
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 0 for r(t) = ln(t3 - 2t2 + 1)i - 
j - 8cos(t)k
A. v(0) = 1i - 
j
B. v(0) = 
j
C. v(0) = - 
j
D. v(0) = 1i - 
j + 8k
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Find the particular solution to the difference equation 
?
What will be an ideal response?
Mathematics
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.tan 37°
A. 0.60 B. -0.84 C. 0.75 D. 0.80
Mathematics
Find the indicated term of the geometric sequence.a4= 2744, a5= 38,416, n = 7
A. a7= 128 B. a7= 256 C. a7= 7,529,536 D. a7= 105,413,504
Mathematics