Find the product.(7x - 5)2
A. 49x2 + 25
B. 7x2 + 25
C. 49x2 - 70x + 25
D. 7x2 - 70x + 25
Answer: C
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Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age.52?67?6352?67?5868?54?54
A. 58.8 B. 58.0 C. 58.2 D. 59.4
Solve the system of linear equations using the elimination method. x = -5 - y - z x - y + 4z= 22x + y =-4 - z
A. (-5, -1, 1) B. (-1, 1, -5) C. (-1, -5, 1) D. (1, -5, -1)
Simplify. Assume that variables represent positive real numbers.
A. 6x18 B. 36x18 C. 36x10 D. 6x10
Use the Half-angle Formulas to find the exact value of the trigonometric function. sin 75°
A. 
B. - 
C. - 
D. 
