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This module is from Elementary Algebra by Denny Burzynski and Wade Ellis, Jr.
The distinction between the principal square root of the number x and the secondary square root of the number x is made by explanation and by example. The simplification of the radical expressions that both involve and do not involve fractions is shown in many detailed examples; this is followed by an explanation of how and why radicals are eliminated from the denominator of a radical expression. Real-life applications of radical equations have been included, such as problems involving daily output, daily sales, electronic resonance frequency, and kinetic energy.This module contains an exercise supplement for the chapter "Roots, Radicals, and Square Root Equations".
Exercise supplement
Square root expressions (
[link] ) - addition and subtraction of square root expressions (
[link] )
For the following problems, simplify the expressions.
Square root equations with applications (
[link] )
For the following problems, solve the equations.
At a small business, the monthly number of sales
is approximately related to the number of employees
by
(a) Determine the approximate number of sales if the number of employees is 27.
(b) Determine the approximate number of employees if the monthly sales are 268.
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The resonance frequency
in an electronic circuit containing inductance
and capacitance
in series is given by
(a) Determine the resonance frequency in an electronic circuit if the inductance is 9 and the capacitance is
. Use
(b) Determine the inductance in an electric circuit if the resonance frequency is
and the capacitance is
. Use
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If two magnetic poles of strength
and
units are at a distance
centimeters (cm) apart, the force
of repulsion in air between them is given by
(a) Determine the force of repulsion if two magnetic poles of strengths 22 and 46 units are 8 cm apart.
(b) Determine how far apart are two magnetic poles of strengths 14 and 16 units if the force of repulsion in air between them is 42 units.
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Questions & Answers
if three forces F1.f2 .f3 act at a point on a Cartesian plane in the daigram .....so if the question says write down the x and y components ..... I really don't understand
hey , can you please explain oxidation reaction & redox ?
hey , can you please explain oxidation reaction and redox ?
Boitumelo
for grade 12 or grade 11?
Sibulele
advantages of electrons in a circuit
we're do you find electromagnetism past papers
Ntombifuthi
it is the force or component of the force that the surface exert on an object incontact with it and which acts perpendicular to the surface
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how to calculate static friction
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a structure of a thermocouple used to measure inner temperature
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How is energy being used in bonding?
a rate of change in velocity of an object whith respect to time
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Acceleration is a rate of change in velocity.
Justice
how to calculate tension by substitution
use fnet method. how many obects are being calculated ?
Khuthadzo
how to calculate acceleration and tension force
you use Fnet equals ma , newtoms second law formula
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Mulaudzi
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Source:
OpenStax, Elementary algebra. OpenStax CNX. May 08, 2009 Download for free at http://cnx.org/content/col10614/1.3
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