Solve the variation problem.The gravitational attraction between two masses varies inversely as the square of the distance between them. If the force of attraction is 2.25 lb when the masses are 4 ft apart, what is the attraction when the masses are 6 ft apart?
A. 2 pounds
B. 4 pounds
C. 3 pounds
D. 1 pound
Answer: D
Mathematics
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Translate to a proportion and solve. Round to the nearest hundredth, if necessary.5% of 700 is what number?
A. 0.35 B. 350 C. 3.5 D. 35
Mathematics
Find the limit.
A. ?
B. - 
C. 4
D. -?
Mathematics
Solve.The amount (in g) of a radioactive substance remaining after time t (in months) is given by the function 
. Express 
in polynomial form by using the first three terms of the Maclauren expansion.
A. 320 - 6.4t + 0.064t2 + . . . B. 320 + 6.4t + 0.064t2 + . . . C. 320 - 320t + 160t2 + . . . D. 320 - 6.4t + 0.128t2 + . . .
Mathematics
AV = 20 dB. Vin = 5.3 V. Find VO.
a. 12 V b. 20 V c. 53 V d. 72 V e. 83 V
Mathematics