Explanation Given: Population of world at time t , is A = 2 A 0 . Growth rate is r = 2.1 % per year. Formula Used: For any positive real numbers M , any real number p, and any positive base b ≠ 1 , log b M p = p log b M Amount of something that increases exponentially is given by, A = A 0 e r t , where t is the time, A 0 is the initial amount of something at t = 0 , A is the amount at any time t. Calculation: Consider the expression, A = A 0 e r t Substitute 2 A 0 for A and 2.1 % for r : 2 A 0 = A 0 e 2.1 100 t 2 = e 2

8th Edition

ISBN: 9780135909942

Author: TOBEY/SLATER

Publisher: PEARSON

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Chapter 11.5, Problem 42E

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To calculate: The time it would have taken for a population to double at a growth rate of 2.1% per year.

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Chapter 11.5, Problem 41E

Chapter 11.5, Problem 43E

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Solve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution. Remember that: A matrix is in row echelon form if Any row that consists only of zeros is at the bottom of the matrix. The first non-zero entry in each other row is 1. This entry is called aleading 1. The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.

PRIMERA EVALUACIÓN SUMATIVA 10. Determina la medida de los ángulos in- teriores coloreados en cada poligono. ⚫ Octágono regular A 11. Calcula es número de lados qu poligono regular, si la medida quiera de sus ángulos internos • a=156° A= (-2x+80 2 156 180- 360 0 = 24-360 360=24° • a = 162° 1620-180-360 6=18-360 360=19 2=360= 18 12. Calcula las medida ternos del cuadrilá B X+5 x+10 A X+X+ Sx+6 5x=3 x=30 0 лаб • Cuadrilátero 120° 110° • α = 166° 40' 200=180-360 0 = 26-360 360=20 ひ=360 20 18 J 60° ⚫a=169° 42' 51.43" 169.4143180-340 0 = 10.29 54-360 360 10.2857 2=360 10.2857 @Sa

Chapter 11 Solutions

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The time it would have taken for a population to double at a growth rate of 2.1% per year.

Solution Summary: The author calculates the time it would have taken for a population to double at 2.1% per year.

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To calculate: The time it would have taken for a population to double at a growth rate of 2.1% per year.

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Chapter 11 Solutions