Simplify the expression. Write the answer using positive exponents.
A. - 
B. 
C. - 
D. x8y8
Answer: D
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Solve the formula for the given variable.E = hv
for n
A. n = 
B. n = hv
C. n = 
D. n = 
- 
Solve the problem.An airplane is flying in the direction 80° west of north at 758 km/hr. Find the component form of the velocity of the airplane, assuming that the positive x-axis represents due east and the positive y-axis represents due north.
A. 
B. 
C. 
D. 
Construct a truth table to determine when the lightbulb is on. That is, determine which switches must be open and which switches must be closed for the lightbulb to be on. 
A. The lightbulb will be on when p, q, and r are all closed, or when p and r are closed and q is open.
B. The lightbulb will be on when p and q are closed and r is open.
C. The lightbulb will be on in all cases except when p, q, and r are all open, or when p and r are open and q is closed.
D. The lightbulb will be on when p, q, and r are all closed, or when p and r are closed and q is open.
A point lying on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(-7, 8) Find tan ?.
A. - 
B. - 
C. - 
D. 