Solve the equation.log7 
= x
A. {-2}
B. {2}
C. 
D. 
Answer: A
Mathematics
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Convert the number to binary form.298 decimal
A. 100101011two B. 11010101two C. 100101010two D. 11010100two
Mathematics
Solve the system.x + 3y + 3z = -20 3y + 4z = -29 z = -5
A. ? B. {(4, -5, -3)} C. {(-5, -3, 4)} D. {(4, -3, -5)}
Mathematics
Solve.In an electric circuit, the electromotive force is defined as V = cos 2?t, where t is time in seconds. Solve the equation for t.
A. t = 2? arccos V
B. t = 
arccos V
C. t = 
cos V
D. t = 2? cos V
Mathematics
Find the exact value of the expression if ? = 45°. Do not use a calculator.g(?) = cos ?Find [g(?)]2.
A. - 
B. 
C. 2
D. 
Mathematics