Solve the system of equations by elimination.
A. (-3, 1)
B. (1, -3)
C. infinitely many solutions
D. no solution
Answer: B
Mathematics
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Use a calculator to evaluate (to three significant digits) the given number.4-
A. 2.31 B. -6.93 C. 0.0906 D. -11.0
Mathematics
For the functions f and g, find the requested value.Evaluate (g ? f)(1).y = f(x)y = g(x)
?
A. -3 B. -1 C. -4 D. -2
Mathematics
Find the sum.-61 + (27)
A. -34 B. -88 C. 88 D. 34
Mathematics
Solve the problem.The current I, in amperes, flowing through a particular ac (alternating current) circuit at time t seconds is I = 220 sin (45?t)What is the period and amplitude of the current?
A. period = 
second, amplitude = 45
B. period = 45? seconds, amplitude = 
C. period = 
second, amplitude = 220
D. period = 
second, amplitude = 135
Mathematics