Elementary Technical Mathematics
12th Edition
ISBN: 9781337630580
Author: Dale Ewen
Publisher: Cengage Learning
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Chapter 14.1, Problem 29E
To determine
To calculate: The period of a wave whose frequency is
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1. Iodine-131 is tone of the most commonly used radioactive isotopes of iodine. It is used to treat hyper-
thyroidism and some kinds of thyroid cancer.
(a) Iodine-131 has a half-life of about 8 days. Find an expression for I(t), the mass of Iodine-131
remaining after t days, in terms of t and Io, the initial mass of Iodine-131 present at time t = 0.
(b) If a dose of 0.9 mg of Iodine-131 is administered, how much is still present after 24 hours?
(c) How much Iodine-131 is present after one week? Does your answer make sense?
Question 2: When John started his first job, his first end-of-year salary was $82,500. In the following years, he received salary raises as shown in the following table.
Fill the Table: Fill the following table showing his end-of-year salary for each year. I have already provided the end-of-year salaries for the first three years. Calculate the end-of-year salaries for the remaining years using Excel. (If you Excel answer for the top 3 cells is not the same as the one in the following table, your formula / approach is incorrect) (2 points)
Geometric Mean of Salary Raises: Calculate the geometric mean of the salary raises using the percentage figures provided in the second column named “% Raise”. (The geometric mean for this calculation should be nearly identical to the arithmetic mean. If your answer deviates significantly from the mean, it's likely incorrect. 2 points)
Starting salary
% Raise
Raise
Salary after raise
75000
10%
7500
82500
82500
4%
3300…
d₁ ≥ ≥ dn ≥ 0 with di even.
di≤k(k − 1) + + min{k, di}
vi=k+1
T2.5: Let d1, d2,...,d be integers such that n - 1
Prove the equivalence of the Erdos-Gallai conditions:
for each k = 1, 2, ………, n and the Edge-Count Criterion: Σier di + Σjeл(n − 1 − d;) ≥ |I||J| for
all I, JC [n] with In J = 0.
Chapter 14 Solutions
Elementary Technical Mathematics
Ch. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Prob. 5ECh. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Prob. 9ECh. 14.1 - Find each value rounded to four significant...
Ch. 14.1 - Prob. 11ECh. 14.1 - Find each value rounded to four significant...Ch. 14.1 - Prob. 13ECh. 14.1 - Graph each equation for value of x between 0 and...Ch. 14.1 - Prob. 15ECh. 14.1 - Graph each equation for value of x between 0 and...Ch. 14.1 - Prob. 17ECh. 14.1 - Prob. 18ECh. 14.1 - Prob. 19ECh. 14.1 - Graph each equation for values of x between 0 and...Ch. 14.1 - Prob. 21ECh. 14.1 - Prob. 22ECh. 14.1 - Prob. 23ECh. 14.1 - Prob. 24ECh. 14.1 - Prob. 25ECh. 14.1 - Prob. 26ECh. 14.1 - Prob. 27ECh. 14.1 - Prob. 28ECh. 14.1 - Prob. 29ECh. 14.1 - Prob. 30ECh. 14.1 - Prob. 31ECh. 14.1 - Prob. 32ECh. 14.1 - A radar unit operates at a wavelength of 3.4 cm....Ch. 14.1 - A local AM radio station broadcasts at 1400 kHz....Ch. 14.1 - Prob. 35ECh. 14.1 - Find the wavelength of water waves with frequency...Ch. 14.1 - Radio antennas are made so that the...Ch. 14.2 - Find the period and amplitude, and graph at least...Ch. 14.2 - Find the period and amplitude, and graph at least...Ch. 14.2 - Find the period and amplitude, and graph at least...Ch. 14.2 - Find the period and amplitude, and graph at least...Ch. 14.2 - Prob. 5ECh. 14.2 - Find the period and amplitude, and graph at least...Ch. 14.2 - Prob. 7ECh. 14.2 - Prob. 8ECh. 14.2 - Prob. 9ECh. 14.2 - Prob. 10ECh. 14.2 - Prob. 11ECh. 14.2 - Prob. 12ECh. 14.2 - Prob. 13ECh. 14.2 - Prob. 14ECh. 14.2 - Prob. 15ECh. 14.2 - Find the period amplitude, and phase shift, and...Ch. 14.2 - Prob. 17ECh. 14.2 - Prob. 18ECh. 14.2 - Prob. 19ECh. 14.2 - Prob. 20ECh. 14.2 - Prob. 21ECh. 14.2 - Prob. 22ECh. 14.2 - Prob. 23ECh. 14.2 - Prob. 24ECh. 14.3 - Solve each triangle using the labels as shown in...Ch. 14.3 - Solve each triangle using the labels as shown in...Ch. 14.3 - Solve each triangle using the labels as shown in...Ch. 14.3 - Solve each triangle using the labels as shown in...Ch. 14.3 - Prob. 5ECh. 14.3 - Prob. 6ECh. 14.3 - Prob. 7ECh. 14.3 - Prob. 8ECh. 14.3 - Prob. 9ECh. 14.3 - Prob. 10ECh. 14.3 - Prob. 11ECh. 14.3 - Prob. 12ECh. 14.3 - Prob. 13ECh. 14.3 - Prob. 14ECh. 14.3 - Prob. 15ECh. 14.3 - Prob. 16ECh. 14.3 - Find the distance AC across the river shown in...Ch. 14.3 - Find the lengths of rafters AC and BC of the roof...Ch. 14.3 - Find the distance AB between the ships shown in...Ch. 14.3 - Find the height of the cliff shown in Illustration...Ch. 14.3 - A contractor needs to grade the slope of a...Ch. 14.3 - A weather balloon is sighted from points A and B,...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - Prob. 11ECh. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - For each general triangle, a. determine the number...Ch. 14.4 - Prob. 16ECh. 14.4 - The owner of a triangular lot wishes to fence it...Ch. 14.4 - The average distance from the sun to the earth is...Ch. 14.4 - A manufacturer has moved into a new building and...Ch. 14.5 - Solve each triangle using the labels as shown in...Ch. 14.5 - Solve each triangle using the labels as shown in...Ch. 14.5 - Prob. 3ECh. 14.5 - Solve each triangle using the labels as shown in...Ch. 14.5 - Prob. 5ECh. 14.5 - Solve each triangle using the labels as shown in...Ch. 14.5 - Prob. 7ECh. 14.5 - Prob. 8ECh. 14.5 - Prob. 9ECh. 14.5 - Prob. 10ECh. 14.5 - Prob. 11ECh. 14.5 - Prob. 12ECh. 14.5 - Prob. 13ECh. 14.5 - a. Find angles A and ABC in the roof in...Ch. 14.5 - Prob. 15ECh. 14.5 - Prob. 16ECh. 14.5 - A plane flies 70.0 mi due north from its base...Ch. 14.5 - Prob. 18ECh. 14.5 - Prob. 19ECh. 14.5 - Prob. 20ECh. 14.5 - A room is shaped like a kite. The lengths of two...Ch. 14.5 - Prob. 22ECh. 14.5 - Prob. 23ECh. 14.5 - In the framework shown in Illustration 8, we know...Ch. 14.5 - Prob. 25ECh. 14.5 - Prob. 26ECh. 14.5 - Prob. 27ECh. 14.5 - Prob. 28ECh. 14.5 - An 8.00-ft antenna must be mounted on the roof of...Ch. 14.5 - Prob. 30ECh. 14.5 - Prob. 31ECh. 14.5 - A game preserve manager is fencing the triangular...Ch. 14 - Find each value rounded to four significant...Ch. 14 - Find each value rounded to four significant...Ch. 14 - Prob. 3RCh. 14 - Prob. 4RCh. 14 - Prob. 5RCh. 14 - Find the period and amplitude, and graph at least...Ch. 14 - Prob. 7RCh. 14 - Find the period, amplitude, and phase shift, and...Ch. 14 - Prob. 9RCh. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Solve each triangle using the labels as shown in...Ch. 14 - Find a. angle B and b. length x in Illustration 2....Ch. 14 - The centers of five holes are equally spaced...Ch. 14 - In the roof truss in Illustration 3, AB=DE,BC=CD,...Ch. 14 - Find each value rounded to four significant...Ch. 14 - Find each value rounded to four significant...Ch. 14 - Find the period, amplitude, and phase shift, and...Ch. 14 - Find angle B in Illustration 1 ILLUSTRATION 1Ch. 14 - Find angle C in Illustration1. ILLUSTRATION 1Ch. 14 - Find side c in Illustration 1. ILLUSTRATION 1Ch. 14 - Find angle C in Illustration 2. ILLUSTRATION 2Ch. 14 - Find angle B in Illustration 2. ILLUSTRATION 2Ch. 14 - Find angle A in Illustration 2. ILLUSTRATION 2Ch. 14 - Find the length of the rafter shown in...Ch. 14 - Prob. 11TCh. 14 - Prob. 1CRCh. 14 - Prob. 2CRCh. 14 - Prob. 3CRCh. 14 - Prob. 4CRCh. 14 - Prob. 5CRCh. 14 - Prob. 6CRCh. 14 - Prob. 7CRCh. 14 - Prob. 8CRCh. 14 - Prob. 9CRCh. 14 - Prob. 10CRCh. 14 - Prob. 11CRCh. 14 - Solve: 7xy=414x2y=8Ch. 14 - Prob. 13CRCh. 14 - Prob. 14CRCh. 14 - Prob. 15CRCh. 14 - Prob. 16CRCh. 14 - Prob. 17CRCh. 14 - Prob. 18CRCh. 14 - Prob. 19CRCh. 14 - Find tan67.2 rounded to four significant digits.Ch. 14 - Prob. 21CRCh. 14 - Prob. 22CRCh. 14 - Prob. 23CRCh. 14 - Prob. 24CRCh. 14 - Prob. 25CRCh. 14 - Prob. 26CRCh. 14 - Prob. 27CRCh. 14 - Prob. 28CRCh. 14 - Prob. 29CRCh. 14 - Prob. 30CR
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