Find the sum of the first n terms of the following arithmetic sequence.a2 = 21, a5 = -42; n = 10
A. -525
B. -735
C. 735
D. 1365
Answer: A
Mathematics
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Give an appropriate answer.Let
f(x) = 10 and 
g(x) = 4. Find
[f(x) + g(x)]2.
A. 116 B. 14 C. 196 D. 6
Mathematics
Solve the equation.5(2z - 5) = 9(z + 2)
A. -2 B. -7 C. 7 D. 43
Mathematics
Construct a graph for the first ten terms of the sequence.The first five terms of the sequence are -2, -1, 0, 1, 2.
A. 
B. 
C. 
D. 
Mathematics
Solve the quadratic equation and simplify your answer. Use i notation for any complex numbers.
- 
= - 
A. x = 
, x = 7
B. x = 
, x = 7
C. x = - 
, x = 7
D. x = 
, x = -7
Mathematics