Solve the formula for the specified letter.I = 
for n
A. n = 
B. n = 
C. n = 
D. n = IR - E + Ir
Answer: B
Mathematics
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Perform the indicated operation.7 + (-19)
A. -12 B. 12 C. -26 D. 26
Mathematics
Write the sum without sigma notation and evaluate it.
A. -(1 - 3)2 -2(2 - 3)2 -3(3 - 3)2 = -6 B. (1 - 3)2 - (3 - 3)2 = -4 C. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = 3 D. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = -3
Mathematics
Graph the linear inequality.-2x + y ? 6 
A. 
B. 
C. 
D. 
Mathematics
Verify that the values of the variables listed are solutions of the system of equations.
x = 2, y = 1, z = 5
A. solution B. not a solution
Mathematics