Use scientific notation to solve the problem.A computer can do one calculation in 1.4 x 10-7seconds. How long would it take the computer to do a trillion (1012) calculations?
A. 1.4 x 1012 sec
B. 1.4 x 106 sec
C. 1.4 x 10-7 sec
D. 1.4 x 105 sec
Answer: D
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Add in the indicated base.
A. 1105 B. 1315 C. 1225 D. 2315
Solve.The power that a resistor must dissipate is jointly proportional to the square of the current flowing through the resistor and the resistance of the resistor. If a resistor needs to dissipate 
of power when 
of current is flowing through the resistor whose resistance is 
find the power that a resistor needs to dissipate when 
of
current are flowing through a resistor whose resistance is 
A. 405 watts
B. 90 watts
C. 45 watts
D. 225 watts
Find an expression equivalent to the one given.- 
A. - 
B. - 
C. - 
D. 
Answer the question or solve the problem.If a ? b, is it always true that a - 2 ? b - 2? Explain.
What will be an ideal response?