ElectricPavlov

cos(180°-θ) = - cos θ            & sin(180°-θ) = sin θ

So cos of rps = - cos rpq

1-sin^2 = cos^2

1-(7/25)^2 = cos^2

.96 =cos ^2

cos = .96                            - cos = - .96   (-24/25)

I understand that, BUT is THIS the equation you meant to post? (look carefully)

24x2+25x−47ax−2=−8x−3−53ax−2

The equation 

24x2+25x−47ax−2=−8x−3−53ax−2     Is the equation?

Wondering if you might re-write the equation?     Seems a bit weird.....

A=P(1+r/n)^(tn)         A = future account value   P = present value  r/n = decimal interest rate per period where n =number of periods    t = time in years    tn = number of periods

A = 399    P = 240      r = .06    n = 12   t = the years we are looking for to answer the Q

.06/12 = .005 %

399 = 240 (1+ .005)^12t    Divide both sides by 240

1.6625= 1.005^(12t)           Take log of bothy sides

.22076 = 12t Log (1.005)    Divide both sides by 12

.0183968= t log 1.005         divide both sides by log 1.005

8.4942 years  = t  

8 ys 5.92 months ~~~ 8 yrs 6 months

Example:

-2.5 x 3+(3x4+ 2^3)^2 x3 =  1192.5

It seems to do so....there was some discussion some time back about   -2^2    = -4  because it does the exponent first then does the negative     so if you want   -2  squared you have to use parens   (-2)^2 = 4

Density = rabbits/acre  =  960/250

+2925-1530+125-550 =         ?     If positive it is increasing

960 +970

Fewer rabbits(because of trapping) means decreasing rabbit/acre density....

Is sales tax 8.875 % in NYC?  If so then:

32.50 x 1.08875   + 3 = $ 38.38       (Tax is $ 2.88 )

Always never mindful. 

23^7 = 1/23^-7       Yes...when you move exponents up or down in a fraction the sign changes.

12^(-3)  =   1 /(12^3)        12^(-3) * 12^2 = 12^(-3+2) = 12^-1 = 1/12      or(12^(-1) )