Exam (elaborations)
college placement test-math questions and answers
- Course
- Institution
college placement test-math
[Show more]
Content preview
college placement test-mathterms - Answer -12, -3, x(variable), 15y, 11xy, -4x^2, -a,
either a single number or variable, or numbers and variables multiplied together.
Terms are separated by + or − signs
Coefficients - Answer -# associated with each of those terms is called coefficient(12, -3,
1,15, 11, -4, -1, 3
expression - Answer -adding 1 or more terms together
linear equation - Answer -equation has =sign. ex of linear eq: 4x+3=11
a linear equation is one that is dependent only on constants and a variable raised to the
first power. For example, y=6x+2y=6x+2 is linear because it has no squares, cubes,
square roots, sines, etc. Linear equations can always be manipulated to take this form:
ax+b=0
rule - Answer -if you do something to one side of the equation, you must do it to the
other
how to solve a linear equation-4 steps - Answer -1.) get rid of parentheses&combine like
terms
2.) get all terms w/ the variable on one side& all other terms to other side - Answer -3.)
isolate variable by dividing
4.) check answer - Answer -
percents - Answer -per=dividing, cents=100, like in a dollar
41% over 100 =.41 - Answer -take decimal place, move it two places to the right
solving percent equations - Answer -"of"=multiply
"is"= equals - Answer -"out of"=division
96% of what #is 72? - Answer -"what" or "what #" = x(the unknown)
, .96 times x =72
.96x over .96 =72 over .96, x= 72 divided by .96
x=75
7 is 4% of what #? - Answer -7 = .04 times x
ratios - Answer -A comparison of two quantities by division
proportions - Answer -An equation stating that two ratios are equal.
unit ratio - Answer -A unit rate where the denominator is one unit
cross products - Answer -The product of the numerator of one ratio and the
denominator of the other ratio, can equal to each other and if they do, then it is
proportional
unit conversions - Answer -distance=yards, feet, meters, centimeters, millimeters, miles,
kilometers
linear equations - Answer -an equation between two variables that gives a straight line
when plotted on a graph
variable. 1st power. no second or higher power on any #s
common denominator - Answer -A denominator that is the same in two or more
fractions.
clear the fraction - Answer -multiply whole equation by CD
x-coordinate - Answer -the first number in an ordered pair
x-coordinate - Answer -corresponds to a number on the x-axis
y-coordinate - Answer -the second number in an ordered pair
y-coordinate - Answer -corresponds to a number on the y-axis
4 quadrants - Answer -on graph, goes in c formation from 1-4
line is the graph of the - Answer -equation
x-intercept - Answer -the point where a graph intersects the x-axis
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller millyphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now