Complete the sentence so the result is an identity. Let x be any real number. - 1 = tan2x
A. cos2x
B. sin2x
C. cot2x
D. sec2x
Answer: D
Mathematics
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Solve the problem. Round to the nearest tenth if necessary.The price of a printer was reduced from $400 to $180. What was the percent of decrease?
A. 55% B. 45% C. 122.2% D. 60%
Mathematics
Perform the indicated multiplication.0(-10)
A. 10 B. -10 C. 0 D. -20
Mathematics
A geometric sequence is given. Find the common ratio and write out the first four terms.{dn} = 
A. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
B. r = 3; d1 = 
, d2 = 
, d3 = 
, d4 = 
C. r = 3; d1 = 
, d2 = 
, d3 = 
, d4 = 
D. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
Mathematics
Solve the combined inequality and graph the solution set. Write the solution in interval notation.17 < 4b + 5 ? 33
A. (3, 7)
B. [3, 7]
C. (3, 7]
D. [3, 7)
Mathematics