Find the probability of tossing 2 heads in 5 tosses of a fair coin.
?
Please enter your answer as a simplified fraction.
What will be an ideal response?
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Find the limit.
cos-1 x
A. ? B. 1 C. 0 D. -1
Solve the problem.In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope decays at a rate of 0.275% annually. Determine the half-life of this isotope, to the nearest year.
A. 109 yr B. 3 yr C. 252 yr D. 182 yr
Answer the question.Assume a is positive, b is negative, and c is positive for the expression (b - a) / cTell whether the value of the given expression is positive, negative or cannot be determined.
A. Positive B. Negative C. Cannot be determined
Find an equation for the line. Then write your answer in the form 
Through (-2, 4) with slope 1
A. y = x + 6; x - y + 6 = 0 B. y = -x + 6; x + y - 6 = 0 C. y = x + 2; x - y + 2 = 0 D. y = x - 6; x - y - 6 = 0