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1.41421356237

square root of 2 is an irrational number sop it cannot be written exactly in digits.

but

it is approximately equal to

sqrt(2) = 1.414213562373095

it doesn't have one

4.9--4.3=9.2

4.9--4.3=9.2

Hi Guest, the answer is -12

-7-5=-12

you start at -7 on the number line and you move in the negative direction 5 units.

That gets you to -12 on the number line   :)

48422.3444828 

-7-5=-2

5/6 what?

48422.3444828

^

The above is if you are dealing with deg

x is approx. equal to  2879.385...

Assuming that 10 is radians......

sin (10)   = 500/x        Multiply both sides by x  and divide both sides by sin (10)

x = 500/ sin (10)  ≈  -919.08

-1+i 

\(-1+i = \sqrt{2}e^{i*3\pi/4}=\sqrt{2}(cos(\frac{3\pi}{4})+icos(\frac{3\pi}{4}))\)

I did this just by visual inspection of wher the point (-1,1) is on the complex rectangular plane. 

I think it is called a rectangular plane ??

I have forgotten a lot of the correct terminology for complex numbers. :(

-5/2.5 is -2

 (4/5)x+ 3/10=1/2      subtract 3/10 from botyh sides

(4/5)x =  1/2 - 3/10

(4/5)x =  [10 - 6] / 20

(4/5)x =  4/20

(4/5)x = 1/5       note that we want to get "x" by itself.....the easiest way to do this is to  multiply both sides by the reciprocal of 4/5  =5//4....so this leads to

x = (1/5) * (5/4)    =   1/4

Well....any prime will do.......how about 127 ???

Let "n'  be the number of sales.......so we have

515  + 17.50n  = 760     subtract 515 from each side

17.50n = 245    divide both sides by 17.50

n = 14  sales

 Note :  (13)sin(76)/12  ≈  1.05

So....you are trying to find an angle whose sin = 1.05.......but.......this is impossible since the sine is never greater than 1

9.2

-12

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