ElectricPavlov

34 = mothers age

6 = son's age   

in 'x' years mom will be 34 + x     son will be 6+x    ALSO   two times sons age is equal to mom's    34+x = 2(6+x)   solve for x = 22 years  

so sone will be 6 + 22 = 28 and mom will be  34 + 22 = 56

Use the  x^y button right next to the ' 7 '       Eaxmple :  For    4^3        Enter   ' 4'   then the x^y button then ' 3 '         

Assuming you need the 54th root of 1.11894   = 1.002083312     that is:  (1.002083312)^54 = 1.11894

1 2/3

First Arc csc (-3.1379280)  = -18.5832 degrees     then cos (-18.58329)  = .94786

Even if you meant  2^(2/2) + 2     the answer is still  '4'

Assuming you need to solve for x,y:

From the FIRST equation: 4x + 10y = 40           4x= 40 - 10y        x= 10 - 10/4 y   Sustitute THIS value for 'x' into the SECOND equation:

3(10 - 10/4 y) - 10y = 37

30 - 30/4 y - 10y  = 37

-70/4 y = 7

y = 7 (-4/70)= -28/70 = - 4/10

Susbstitue this value fo y into one of the equations    x = 10 - 10/4 (-4/10) =  10 + 20/20 = 11

so (x,y) = (11, -4/10)

Check   4x + 10y = 40    4 (11) + 10(-2/5) =40

                                       44 -4 = 40                       Check!

         Another check   3x - 10y = 37

                                   3(11) - 10(-4/10) = 37

                                    33+ 40/10 = 37                    Check !

I will ASSUME you meant:    Whats -16t^2 + 16T+ 480   =0

Let's simplify by dividing through by  -16 to get

t^2 -t - 30 = 0

(t-6)(t+5) = 0       reults in t = 6 or -5

26 degrees 20 minutes  is 26.333 degrees

   sin 26.333 = 18.6/hyp

hyp = 18.6/sin26.33 =41.92 ft

Some people tip on the TOTAL amount...which includes TAX...others tip only on the amount of the purchase:

6.5 (1.0925)(1.15)=

8.17   if you tip with the tax included o/w  8.08