Find the first five terms of the recursively defined sequence.a1 = 9, an+1 = 
A. 9, - 
, -9, - 
, -9
B. 9, - 
, - 
, - 
,- 
C. 9, - 
, 9, - 
, 9
D. 9, - 
, 
, - 
, 
Answer: C
Mathematics
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Provide an appropriate response.Use the fact that sin-1 x = x + 
for |x| < 1 to find the series for cos-1 x.
A. 
- x + 
B. 
- x - 
C. 
- 
D. 
- x + 
Mathematics
Perform the indicated operation. Write the answer in lowest terms.40 ÷ 1
A. 23
B. 24
C. 25
D. 22
Mathematics
Multiply. Simplify, if necessary.
? 
A. 
B. 
C. 
D. 4
Mathematics
Identify the polynomial as a monomial, binomial, trinomial, or none of these. Give its degree.
r3 + 
r2
A. Binomial, degree 5 B. Binomial, degree 4 C. Binomial, degree 3 D. Trinomial, degree 2
Mathematics