




Nine from some number is four.
Five less than some quantity is eight.
Exercises
Translate each phrase or sentence to a mathematical expression or equation.
Six more than an unknown number.
A number increased by one.
A number decreased by ten.
Negative seven added to some number.
Negative nine added to a number.
A number plus the opposite of six.
A number minus the opposite of five.
A number minus the opposite of negative one.
$x\left[\left(1\right)\right]$
A number minus the opposite of negative twelve.
Eleven added to three times a number.
Six plus five times an unknown number.
Twice a number minus seven equals four.
Ten times a quantity increased by two is nine.
When fourteen is added to two times a number the result is six.
Four times a number minus twentynine is eleven.
Three fifths of a number plus eight is fifty.
$\frac{3}{5}x+8=\text{50}$
Two ninths of a number plus one fifth is fortyone.
When four thirds of a number is increased by twelve, the result is five.
$\frac{4}{3}x+\text{12}=5$
When seven times a number is decreased by two times the number, the result is negative one.
When eight times a number is increased by five, the result is equal to the original number plus twentysix.
Five more than some number is three more than four times the number.
When a number divided by six is increased by nine, the result is one.
A number is equal to itself minus three times itself.
A number divided by seven, plus two, is seventeen.
A number divided by nine, minus five times the number, is equal to one more than the number.
When two is subtracted from some number, the result is ten.
When four is subtracted from some number, the result is thirtyone.
Three less than some number is equal to twice the number minus six.
Thirteen less than some number is equal to three times the number added to eight.
When twelve is subtracted from five times some number, the result is two less than the original number.
When one is subtracted from three times a number, the result is eight less than six times the original number.
When a number is subtracted from six, the result is four more than the original number.
When a number is subtracted from twentyfour, the result is six less than twice the number.
A number is subtracted from nine. This result is then increased by one. The result is eight more than three times the number.
Five times a number is increased by two. This result is then decreased by three times the number. The result is three more than three times the number.
Twice a number is decreased by seven. This result is decreased by four times the number. The result is negative the original number, minus six.
Fifteen times a number is decreased by fifteen. This result is then increased by two times the number. The result is negative five times the original number minus the opposite of ten.
Exercises for review
(
[link] )
$\frac{8}{9}$ of what number is
$\frac{2}{3}$ ?
(
[link] ) Find the value of
$\frac{\text{21}}{\text{40}}+\frac{\text{17}}{\text{30}}$ .
(
[link] ) Find the value of
$3\frac{1}{\text{12}}+4\frac{1}{3}+1\frac{1}{4}$ .
(
[link] ) Convert
$6\text{.}\text{11}\frac{1}{5}$ to a fraction.
(
[link] ) Solve the equation
$\frac{3x}{4}+1=5$ .
Questions & Answers
find the 15th term of the geometric sequince whose first is 18 and last term of 387
The given of f(x=x2. then what is the value of this f(3) 5f(x+1)
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
can someone help me with some logarithmic and exponential equations.
sure. what is your question?
ninjadapaul
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X6)^2
so it's 20 divided by X6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
is it a question of log
Abhi
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
if A not equal to 0 and order of A is n prove that adj (adj A = A
rolling four fair dice and getting an even number an all four dice
Differences Between Laspeyres and Paasche Indices
No. 7x 4y is simplified from 4x + (3y + 3x) 7y
how do you translate this in Algebraic Expressions
Need to simplify the expresin. 3/7 (x+y)1/7 (x1)=
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
what's the easiest and fastest way to the synthesize AgNP?
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials and their applications of sensors.
what is system testing?
AMJAD
preparation of nanomaterial
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field .
1Electronicsmanufacturad IC ,RAM,MRAM,solar panel etc
2Helth and MedicalNanomedicine,Drug Dilivery for cancer treatment etc
3 Atomobile MEMS, Coating on car etc.
and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change .
maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^15
Prasenjit
can nanotechnology change the direction of the face of the world
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
how did you get the value of 2000N.What calculations are needed to arrive at it
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Source:
OpenStax, Contemporary math applications. OpenStax CNX. Dec 15, 2014 Download for free at http://legacy.cnx.org/content/col11559/1.6
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