Solve the problem.A vector v = zi + 8j emanating from the origin points into the first octant. If 
find z.
A. 100
B. 6
C. 
D. 14
Answer: B
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Find the indicated probability.The distribution of B.A. degrees conferred by a local college is listed below, by major. Major FrequencyEnglish2073Mathematics2164Chemistry318Physics856Liberal Arts1358Business1676Engineering 8689313What is the probability that a randomly selected degree is in English or Mathematics?
A. 0.455 B. 0.010 C. 0.517 D. 0.424
Find numbers a and b, or k, so that f is continuous at every point.
A. k = 42 B. k = 30 C. k = -6 D. Impossible
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 0.125% annually. Determine the half-life of this isotope, to the nearest year.
A. 241 years B. 555 years C. 6 years D. 400 years
Use a calculator to find a graphical solution to the equation. Express results to the nearest thousandth.7n2 = -6n - 1
A. -0.286, -0.571 B. -0.655, -1.059 C. -0.227, -0.631 D. -0.113, -0.315