Simplify the rational expression.
A. -1
B. 
C. - 
D. 1
Answer: C
Mathematics
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Find the function value to four decimal places.Find sin ? when cos ? = 0.9394 and tan ? > 0.
A. 0.3429 B. 2.9163 C. 0.3650 D. 2.7395
Mathematics
Solve the problem using matrices.A chemist has prepared two acid solutions, one of which is 4% acid by volume, another 11% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of a solution that is 
acid.
A. 3.12 cm3 of 4%; 46.88 cm3 of 11% B. 20 cm3 of 4%; 20 cm3 of 11% C. No solution D. 34 cm3 of 4%; 16 cm3 of 11%
Mathematics
Provide an appropriate response.(x + 6)(x - 2) =
A. x2 + 8x + 12 B. x2 + 8x - 12 C. x2 - 8x - 12 D. x2 + 4x - 12 E. x2 - 4x - 12
Mathematics
Find the indicated matrix.Let A = 
, B = 
, and C = 
. Find AB + BC.
A. 
B. 
C. 
D. 
Mathematics