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True or false. Is 15x^5y + 13x^2y^4 - y in descending order for the variable x.

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: Variables

Hello,
This calculator cannot handle symbolic algebra.
Use the rules to simplify the expressions: Get rid of the parentheses using distributivity od multiplication with respect to addition; group similar terms (terms with x, terms without x).
Hope it helps.

Posted on Sep 27, 2009

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Tom is 5 times as old as todd.In seven years Tom's age will be 6 years more than 3 times as old as Todd. How old is Todd


Todd is 4 years old.

Let Tom's age = X
Let Todd's age = Y

From the given facts:

X = 5Y

and

X + 7 + 6 = 3 ( Y + 7 )
X+13 = 3Y + 21
X = 3Y + 8

So if:
X=5Y
and
X=3Y+8

Then:
5Y=3Y+8
2Y=8
Y=4

I hope that helps.

Joe.

Sep 14, 2011 | Office Equipment & Supplies

1 Answer

How do I solve for y, 2y + (y-3)=18 - 2 (y+3). with the casio fx-300es? and if I cant whats the calculator that will. thanx


Do you really need a calculator to solve a linear equation?
Let us see how to solve it without a calculator.
Remove the parentheses fronm the second term on the left : y-3
Use the distributive property on the last term on the right side -2y-6
Take the term -3 to the right side, changing its sign in the process (becomes +3)
Take the -2y term to the left making it +2y.
3y +2y=18+3-6 or 5y=15 and the answer is straightforward .

As to your Casio FX300ES, it cannot solve equations because it does not have an EQUATION calculation mode. The Casios FX-115ES and FX-991ES have an Equation Mode. If you use any of the two to solve an equation in one variable (linear, quadratic or other) the unknown is taken to be x by default. You would have to change the name of the variable from y to x.

Sep 08, 2011 | Casio fx-300ES Calculator

2 Answers

2x - 4y = 20 4x + 2y = -20


This should start wit X=something and Y=something, sorry I'm not an human algebra calculator....

Jul 29, 2011 | Computers & Internet

1 Answer

X+2y=4


Just solve for 1 variable.
x+2y=4
2y=4-x
y=(4-x)/2

Now you can graph this and find all the values for x and y that give you the solution.

Jun 09, 2011 | Texas Instruments TI-89 Calculator

1 Answer

90=15(2y=2)


If you mean this to be a logic statement, it will always be false (0). You might be getting an error because you need parentheses around the whole thing.
If you mean the 2y=2 to be 2y 2 then y=2
If you mean the 2y=2 to be 2y-2 then y=4

You should give more info on your problem next time.

Apr 30, 2011 | Texas Instruments TI-83 Plus Calculator

2 Answers

Does the program do order of operations


Hi bem4u2

If the question was like this: x+2y/9+5y then the order of operations would apply because it is a string of operations

But your question is the equivalent of a single fraction
In this case,
Take the numerator alone apply the order of operation
Take the denominator and apply the order of operations
Then it becomes a single fraction
Hope this answer your question
Have a good day
luciana44

Oct 07, 2009 | SoftMath Algebrator - Algebra Homework...

1 Answer

4x+8y=20 -4x+2y=-30


4x+8y=20 || /4
x+2y=5
x=5-2y

-4x+2y=-30 || /2
-2x+y=-15
-2(5-2y)+y=-15
-10+4y+y=-15
5y=-5
y=-1

x=5-2y || y=-1
x=5-2(-1)
x=5+2
x=7

Mar 10, 2009 | Bagatrix Algebra Solved! 2005 (105101) for...

2 Answers

Simplify


[3(x-5)-4(-3x+2)]-[4(6-x)]
[(3x-15)-(12x+8)]-(24-4x)
(-9x-23)-(24-4x)
-13x-(-1)
this is 9th grade stuff.

Sep 13, 2008 | Texas Instruments TI-84 Plus Calculator

1 Answer

Variables


Hello,
This calculator cannot handle symbolic algebra.
Use the rules to simplify the expressions: Get rid of the parentheses using distributivity od multiplication with respect to addition; group similar terms (terms with x, terms without x).
Hope it helps.

May 07, 2008 | Casio FX-115ES Scientific Calculator

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