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4/7-1/2x=1+1/x - Texas Instruments TI-84 Plus Calculator

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Assuming you want the solution graphically.
You press the Y= button (top left)
Enter the first side of the equation after Y1=
Press the down arrow
Enter the other side of the equation after Y2=
Set the setting by pressing the window button (set xmin to -10; xmax to 10; ymin to -10; ymax to 10 )
Press the graph button
You will see now the two functions potted.
Now press Calc ( 2nd and after that Trace)
Select the correspondant number for intersect.
Set min to -10
Press enter
Set max to 10
Press enter
Guess something between -10 and 10 (eg. 0)
The answer will come out quickly (x=-3,5)

Hope it helps.

Posted on Mar 16, 2011

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1 Answer

(2x-10)(x-1)


Use FOIL, first, outside, inside and last.

First 2x * x = 2x^2

Outside 2x * -1 = -2x

Inside -10* x = -10x

Last -10 * -1 = 10

Thus, we have 2x^2 -2x -10x + 10

Collecting like terms, we get 2x^2 -12x + 10

Good luck,

Paul

Nov 29, 2016 | Office Equipment & Supplies

1 Answer

What is the graph linear equation for y=2*+1


Now is the equation supposed to be y=2x+1? If so,
graph-linear-equation-y-2-1-cds52kcxe0my5labvj2rkild-2-0.gif
The graph of y = 2x+1 is a straight line
When x increases, y increases twice as fast, hence 2x
When x is 0, y is already 1. Hence +1 is also needed
So: y = 2x + 1
Here are some example values:
xy = 2x + 1
-1y = 2 × (-1) + 1 = -1
0y = 2 × 0 + 1 = 1
1y = 2 × 1 + 1 = 3
2y = 2 × 2 + 1 = 5
Check for yourself that those points are part of the line above!

Jan 16, 2015 | SoftMath Algebrator - Algebra Homework...

1 Answer

What is rational expression of (22x +11) (10x2 +5x)


I assume the 10x2 means 10 squared. (I will show it as 10x**2)
(22x+11)(10x**2+5x) factors into"
11(2x+1)*5(2x**2+1x)
=55(2x+1)(2x**2+1x)
=(55x)(2x+1)(2x+1)
Multiplied out, it becomes 55x(4x**2+4x+1)
= 220x**3 + 220x**2 + 55x

Dec 11, 2014 | Computers & Internet

1 Answer

Is the vivitar auto 2x custom tele-converter model 2x-1 compatible with a Nikon EM


Melissa. The 2X-1 is for use on a M42 screw connection, like on Pentax The 2X-3 is for Nikon.

Dec 19, 2013 | Vivitar Auto 2x Custom Tele-converter...

2 Answers

2x+y=1 x=-2,0,1 y=


This has nothing to do with laptops, please remove it from this section. The answer is 2x+y=1 so y=1-2x therefore 1-(2X-2) =1--4 Y= 5 so do the same thing again 1-(2X0) 1-0 Y=1 and again 1-(2X1) 1-2 Y=-1

Jan 25, 2011 | Computers & Internet

2 Answers

4x-(2x-3)=0


4x-(2x-3)=0
=>4x-2x+3=0 ; (after the bracket's oepned and multiplied by - [minus])
=>2x+3=0 ; taken x as common and 4-2=2 i.e. x(4-2) = 2x
=>2x=-3 ; +3's moved on the right-hand side, so it becomes -3
=>x=-3/2 ; 2 has been moved to the right-hand side and divided with -3 i.e 1/2 multiplied by -3 = -3/2

Hence, x = -3/2


Good luck.

Thanks for using FixYa.

Aug 13, 2010 | SoftMath Algebrator - Algebra Homework...

1 Answer

Find three consecutive odd integers such that twice the product of the first two is 7 more than the product of last two


Hi,

Let's say your 3 numbers are a, b and c. Because they are consecutive and odd, you can write them like this:

a = 2x-1, b = 2x+1, c = 2x+3

Now, your problem looks like this:

2(2x-1)(2x+1) = (2x+1)(2x+3) + 7
2(4x^2-1) = 4x^2+6x+2x+3 + 7
8x^2-2 = 4x^2+8x+10
4x^2-8x-12 = 0
4(x^2-2x-3) = 0
x^2-2x-3 = 0

The solutions for this quadratic equation ( see more about this kind of equations here: http://en.wikipedia.org/wiki/Quadratic_equation ) are x=3 or x=-1. So, you've got two sets of solutions:

[1] a = 5, b = 7, c = 9
[2] a = -3, b = -1, c = 1


Take care,
Alex

Oct 15, 2009 | Google Computers & Internet

1 Answer

Help


sec^4X- sec^2X = 1/cot^4X + 1/cot^2X
RHS
1/cot^4X + 1/cot^2X
=1/(Cos^4X/Sin^4X) + 1/(Cos^2X/Sin^2X)
=Sin^4X/Cos^4X + Sin^2X/Cos^2X
=Sin^4X/Cos^4X + Cos^2X.Sin^2X/Cos^4X
=Sin^2X/Cos^4(Sin^2X + Cos^2X)
=Sin^2X/Cos^4X
=(1-Cos^2X)/Cos^4X
=1/Cos^4X - Cos^2X/Cos^4X
=1/Cos^4X - 1/Cos^2X
=Sec^4X - Sec^2X
=LHS

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1 Answer

(sin-cos)(sin+cos)


(sinX-cosX)(sinX+cosX) =(sin^2 - Cos^2X)
=Sin^2X - (1-Sin^2X)
=Sin^2X -1 + Sin^2X
=2Sin^2X -1

Zulfikar Ali
ali_zulfikar@yahoo.com
9899780221

Jan 26, 2009 | Super Tutor Trigonometry (ESDTRIG) for PC

5 Answers

Algebra 1


B. 2((2-Y)/3)-Y=3
2(2-Y)-Y=9
4-2Y-Y=9
-3Y=9-4
-3Y=5
-Y=5/3
Y=-1.67

A. 3X+(-1.67)=2
3X-1.67=2
3X=2+1.67
3X=3.67
X=3.67/3
X=1.22

Nov 05, 2007 | SoftMath Algebrator - Algebra Homework...

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