Compute the partial sum of the geometric series for the stated value of n. Round your answers to four decimal places.ak = 9
(k-1); n= 7
A. S7 = 8.052475
B. S7 = 4.783975
C. S7 = 9.062475
D. S7 = 6.046875
Answer: D
Mathematics
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 7i - 5i + 6k, v = 0
A. 
; 
(7i - 5i + 6k)
B. 0; 7i - 5i + 6k
C. 0; no direction
D. 0; 
(7i - 5i + 6k)
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, 1) for 6x2 + 4y3 + 2xy = 0.
A. - 
B. - 
C. - 1
D. 1
Mathematics
Solve the equation and check your solution.
+ x = 
A. x = 5 B. x = -5 C. x = ± 5 D. No solution
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Divide. Write the answer in lowest terms and as a whole or mixed number where possible.28 ÷ 
A. 21
B. 37
C. 
D. 7
Mathematics