Give the amplitude or period as requested.Period of f(x) = cos 3x
A. 
B. 2?
C. 3
D. 1
Answer: A
Mathematics
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Which subtraction model (take-away, missing addend, comparison, or measurement) corresponds best to the problem?Rod drove from home to his grandmother's who lives 213 miles away. On the way back home, he drove 130 miles before his car broke down. How far away from home was he?
A. Measurement B. Missing addend C. Comparison D. Take-away
Mathematics
Solve the system by substitution.
A. (-6, 6) B. (-2, 0) C. (0, 0) D. (0, -6)
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 3
B. - 3
C. - 
D. - 
Mathematics
Use the Gauss-Jordan method to solve the system of equations. 9x + 9y - z = 99 x - 6y + 6z = 38-9x + y + z = -59
A. (8, 9, 4) B. (-8, 4, 16) C. (8, 4, 9) D. No solution
Mathematics