Write a numerical expression for the phrase and simplify it.The product of 8 and -5, added to -1
A. (-1)(-5)(8); 40
B. (-1)(-5) + 8; 13
C. (-1) + (8)(-5); -41
D. (-1 + 8)(-5); -35
Answer: C
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List all the factors of each number.14
A. 2 + 7 B. 2 ? 9 C. 2 ? 8 D. 2 ? 7
Solve the systems of equations by the addition method. 
A. {(2, 7)}
B. no solution; ?
C. {(3, 2)}
D. 
Solve the right triangle ABC with C = 90°. Your answer should give an angle in decimal degrees when given an angle in decimal degrees and in degrees and minutes when given an angle in degrees and minutes. Use the rules for significant digits.A = 40.82°, b = 13.5 ft
A. B = 49.18°, a ? 11.66 ft, c ?17.84 ft B. B = 49.18°, a ? 11.66 ft, c ? 20.65 ft C. B = 49.18°, a ? 11.7 ft, c ? 17.8 ft D. B = 49.18°, a ? 11.7 ft, c ? 20.7 ft
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 