Use a truth table to determine if the following argument is valid.
What will be an ideal response?
p | q |  |  |  |  |
T | T | T | T | T | T |
T | F | F | T | F | T |
F | T | T | F | F | T |
F | F | T | T | T | F |
Not valid
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Find the eccentricity of the ellipse.
+ 
= 1
A. 
B. 
C. 
D. 
Solve the problem. Write ratios in lowest terms.Jim's house is built on a 5
-acre plot of land. Jane's house sits on a 6-acre piece of land. Find the ratio of the size of Jim's land to the size of Jane's land.
A. 
B. 
C. 
D. 
Solve the problem.Suppose that for an electrical appliance, voltage is given by 
and amperage by 
where t is time in seconds. Use identities to write the wattage 
in the form 
A. W = - 101.115 cos 240?t + 101.115 B. W = 101.115 cos 240?t - 101.115 C. W = - 202.23 cos 240?t+ 202.23 D. W = - 101.115 cos 120?t + 101.115
Solve the problem.Express 75° as ? - ?, where sin ? and sin ? are known exactly.
A. 105°- 30° B. 145°- 70° C. 90°- 15° D. 120° - 45°