Add like terms, if possible, and write the result in descending powers of the variable.7x4 + 2x2 - 4x4
A. 5x10
B. 5x2
C. 3x4 + 2x2
D. Cannot be simplified
Answer: C
Mathematics
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Use Venn diagrams to determine whether the following statements are equal for all sets A and B.(A ? B)', A' ? B'
A. not equal B. equal
Mathematics
Solve the variation problem.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 ft from a light is 2 foot-candles, find the intensity on a screen 20 ft from the light.
A. 1
foot-candles
B. 
foot-candle
C. 2 foot-candles
D. 
foot-candle
Mathematics
Evaluate the expression.(41)
A. 24 B. 2 C. 4 D. 12
Mathematics
Find the area.
A. 98 m2 B. 56 m2 C. 28 m2 D. 196 m2
Mathematics