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2EA: I am going to assume the A is a 2x2 matrix because in order for E which is a 1x2 matrix, to be multiplied by another matrix, the other matrix rows must be 2
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2==

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so lets just plug in our known and solve for C. than 9/2 you typed should be 9/5
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1760.2=9/5(C+32)
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8801=9C+288
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9C=8513
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degrees Celcius
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degrees

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you must pay attention to your units and make sure you interpret what the rate is as opposed to the distance and time.
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the rate is not 25 minutes..... the rate is 1mi/25min
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so 7mi=(1/25)(mi/min)(t)
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t=7mi(25/1 (min/mi))...see how the units cancel each other so that we end up with 175 min.
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the way you were doing it you ended up with

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91+92+98+x=360
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281+x=360
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must be scored to avg 90 per test or to have a total of 360 points

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this reading might interest you
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this one is an animation:
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http://www.davis-inc.com/pythagor/index.shtml
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http://jwilson.coe.uga.edu/EMT668/emt668.student.folders/HeadAngela/essay1/Pythagorean.html

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someone's age ....lets call s
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2/3(s-3)+1/6(s+3)=s-4
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(2/3)s-2+(1/6)s+(1/2)=s-4
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4s-12+s+3=6s-24
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lets call someone's age x
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1/2(x+4)-3/4(x-4)=0....equation
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(1/2)x+2-(3/4)x+3=0...distributed terms
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2x+8-3x+12=0...multiplied all terms by 4
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-x=-20
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years old

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if the slope is undefined then we know the equation takes the form of x=a, where a is the value of the x coordinate of any point on the line.
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hence x=6 is our equation

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-(2x over -xy)
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need a question........thanks Mathtut

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let x and y be the number of cars and trucks sold respectively
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x+y=69........eq 1
x=y+27........eq 2
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take x's value from eq 2 and plug it into eq 1
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y+27+y=69
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2y=42
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number of trucks sold
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number of cars sold

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8-P=-12-3P
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2P=-20......added 3P and subtracted 8 from both sides
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divided both sides by 2 to isolate the variable P

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let a and b be our supplementary angles
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b=4a-30..........eq 1
a+b=180..........eq 2
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rewrite eq 2 to b=180-a and plug it into eq 1
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180-a=4a-30
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5a=210
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degrees
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degrees

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3 and -3---->1/3 and -1/3
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in general if -a is the opposite of a is -1/a the opposite of 1/a
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if -a+a=0
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then is(-1/a)+(1/a)= to zero -1+1/a=0/a=0
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it appears as if the answer is YES

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4/20,25%,.45,.5,3/5,65%

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y=x-1
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ok lets call the amount of 20% and 50% solutions a and b respectively
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a+b=10...........eq 1
.2a+.5b=.3(10)...eq 2
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rewrite eq 1 to a=10-b and plug this value into eq 2
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.2(10-b)+.5b=3
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2-.2b+.5b=3
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.3b=1
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amount of 50% solution
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amount of 20% solution

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if one solution is 3+2i then the other is 3-2i
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value of m=-6

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combine all like terms
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4y=3x+12
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y=(3/4)x+3
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slope is 3/4, y intercept is 3
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make a table for any given value of x find y and then plot those point and you will end up with this line
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need a question ....thanks Mathtut

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y=mx+b is slope intercept form just plug em in
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y=2x+5

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so you would divide 26ft/5.5ft to find out how many intervals of 5.5 there are.
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26/5.5=4.7
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so we need 4.7 inches on the scale model to represent 26 ft
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5.5(4.7)=26

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119.75(.02)=2.4 dollars

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y=0 is the x axis and we know the slope is zero so we have the slope and a point
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the slope of a vertical line which would be perpendicular to the x axis is undefined . So the answer would be a vertical line with an equation of x=-5 which is parallel to the y axis and 5 units to the left of it.

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the formula for finding the sum of interior angles for a regular polygon is 180(n-2)....so since n=20 we arrive at
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180(18)=3240 degrees
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now since there are 20 equal angles we divide this by 20 to get the measurement of 1
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3240/20=162 degrees each

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functions map inputs to unique outputs. A polynomial function of the first degree, such as y = 2x + 1, is called a linear function
All linear equations are functions with the exception of one type--
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Use the vertical line rule to see if an equation is a function or not. If a vertical line intersects a plot at more than one point, the equation is NOT a function.
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So, there is a linear equation that is not a function. Using the vertical line rule we conclude that a vertical itself is not a function. Maybe it would be easier to look at this from another definition of function. There is one and only one y value for each value of x. For x=a, there is infinite values of y. Thus a vertical line is not a function.
nonlinear function f(x) = x^2-1

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960....which is 8 times 10 times 12. lets test numbers of above that
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since it has to be divisible by 12 lets add 12 to 960
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960+12=972...10 doesnt work here
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972+12=984...10 doesnt work here
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984+12=996...10 doesnt work here
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any other additions of 12 would take us to 4 digits.

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since 3 is the only solution
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