Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Four cards are drawn from a deck. The number of red tens is counted.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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The amount A, in grams, of a radioactive substance remaining after t years is given by the following table. Use an exponential model for these data to determine the half-life of the radioactive substance. That is, determine how long it takes for half of the substance to decay. Round your answer to two decimal places. t 3 4 5 6 A 157.36 154.21 151.13 148.11?
A. 25.46 years B. 34.50 years C. 34.31 years D. 25.00 years
Mathematics
Divide and simplify the answer: 
÷ 
.
A. 
B. 
C. 
D. 
Mathematics
(x + 2)(x - 2) =
a. x2 - 2x - 4 b. 2x2 - 4 c. x2 + 2x - 4 d. x2 - 4 e. x2 + 4
Mathematics
Solve the problem. Round your answer to three decimals.What annual rate of interest is required to double an investment in 10 years?
A. 6.931% B. 3.589% C. 7.177% D. 11.612%
Mathematics