Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Answer: A
Mathematics
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Solve the problem.The intensity I of light decreases from its value I0 as it passes a distance x through a medium. Given that 
where k is a constant depending on the medium, find x for 
and 
A. 2.690 cm B. 0.598 cm C. 1.83 cm D. -2.690 cm
Mathematics
Solve the problem.A semicircular plate
in diameter sticks straight down into fresh water with the diameter along the surface. Find the fluid force exerted by the water on one side of the plate.
A. 22,744.8 lb B. 68,234.4 lb C. 45,489.6 lb D. 30,326.4 lb
Mathematics
Add the integers.-5984 + (-7177)
A. -1626 B. -1727 C. -13,161 D. -1751
Mathematics
Divide.
A. 2.07 B. 10.7 C. 20.7 D. 1.07
Mathematics