Solve the radical equation. Check all proposed solutions.
= 
+ 1
A. x = - 
, 
B. x = 
, 2
C. x = 
D. no solution
Answer: C
Mathematics
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Solve the problem.For a certain drug, the rate of reaction in appropriate units is given by 
= 
+ 
, where t is measured in hours after the drug is administered. Find the total reaction to the drug from t = 3 to t = 12.
A. 20.25 B. 9.07 C. 10.13 D. 21.99
Mathematics
Solve the equation.5(y - 6) = 7y - 30
A. -30 B. -60 C. 30 D. 0
Mathematics
Factor when possible.x2 - 4xy - 21y2
A. (x - 3y)(x + y) B. (x + 3y)(x - 7y) C. (x - 3y)(x + 7y) D. Prime
Mathematics
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Mathematics