Chapter 7, Section 7.3, Go Tutorial Problem 054 x Incorrect. A radioactive substance decays at a...
Half-Life Complete the table shown to the right for the half-life of a certain radioactive substance. Decay Rate, k 4.6% per year = -0.046 The half-life is years. (Round to one decimal place as needed.)
Complete the table shown to the right for the half fe of a certain radioactive substance Decay Rate, 3.7% per year -0.037 The half-life is years (Round to one decimal place as needed.)
Part A) A scientist begins with 100 milligrams of a radioactive substance that decays exponentially. After 31 hours, 50 mg of the substance remains. How many milligrams will remain after 58 hours? (Round your answer to two decimal places.) Part B) Jamal wants to save $58,000 for a down payment on a home. How much will he need to invest in an account with 8.5% APR, compounding daily, in order to reach his goal in 5 years? (Round your answer...
Chapter 7, Section 7.3, Question 009 The speeds of cars on a road are approximately normally distributed with a mean y = 58 km/hr and standard deviation o = 4 km/hr. (a) What is the probability that a randomly selected car is going between 63 and 68 km/hr? Round your answer to four decimal places. P = the absolute tolerance is +/-0.0001 LINK TO TEXT (b) What fraction of all cars are going slower than 49 km/hr? Round your answer...
Chapter 5, Section 5.5, Go Tutorial Problem 008 The marginal cost c'(a) (in dollars per unit) of producing a units is given in the following table: (a) If fixed cost is 12000 dollars, estimate the total cost of producing 600 units. dollars (b) How much would the total cost increase if production was increased one unit to 601 units? dollars increase Click if you would like to Show Work for this question: Open Show Work
Chapter 5, Problem 5/014 GO Tutorial Determine the y-coordinate of the centroid of the shaded area. Ix=y2/b 0.62b b Answer: The number of significant digits is set to 3; the tolerance is +/-1 in the 3rd significant digit Open Show Work Click if you would like to Show Work for this question:
Chapter 7, Section 2, Exercise 032 X Incorrect. Find the expected count and the contribution to the chi-square statistic for the (A, F) cell in the two-way table below. G Total 149 56 287 30 113 Total 130 161 131 127 549 Round your answer for the expected count to one decimal place, and your answer for the contribution to the chi-square statistic to three decimal places, x Expected count = contribution to the chi-square statistic = 1 Click if...
A radioactive substance has a half-life of 17.33 years. Use the formula n(t) = n0e^ −kt which tells you how much is left at time t > 0 to find how much of a 20-gm sample would remain one hundred years after it is collected. Round your answer to the nearest two decimal places.
Chapter 6, Section 6.6, Go Tutorial Problem 10 Find the inverse Laplace transform of the function using convolutions F(s) = - 1 (s + 1)?(52 + 25 z-{F(s)- 676e-(26t+2) z"{F(s)- 885 sin 5t + 338 Cos St + 676e-t(26+ + 2) {F(s)) -sin 5t 845 (F(s)) 338 -Cos 5t (F(s)) - Bås sin 5t - 338 cos cos 5t + 676 e*(26+ + 2) Click If you would like to Show Work for this question: Open Show Work
need help with these two questions. Question 5 (1 point) Willmonite-35 is a newly found radioactive substance with a half life of 450 years. How much of 14,000 grams of Willmonite-35 will be left after 180 years? Round to the nearest gram. Your Answer: Answer Question 6 (1 point) A 5.5-volt battery is connected to a series in which the inductance is 0.25 henry and the resistance is 8 ohms. Determine the current after 1 second if the initial current...