ElectricPavlov

Let's go this way

X^2 + 8x - 180 = 0

(x-10)(x+18) = 0          Now do you know where to go?

2/3  x  23  =  (2 x 23) / 3   = 46/3  = 15  1/3

This site has a calculator on it !!!!    Use it to find sqrt (81) = 9

..... and the percentage MADE would be  52/67 x 100% = 77.61%

(sqrt (2)  - 5 )^2   = (sqrt(2) - 5)  x  (sqrt(2) - 5)

=  sqrt2 sqrt2 - 5 sqrt2 - 5 sqrt2 + 25

= 2                 - 10 sqrt5             + 25

= 27 - 10 sqrt(2)

= 12.85786

25 + x= -3(5- 7x)      Use distributive property to get

25+x = -15+21x        Subtract 'x' from both sides

25 = -15 + 20x          Add 15 to both sides

40 = 20 x                   Divide both sides by 20

2 = x

11 / (1 1/3)  =   11  /  (4/3)   =   11  x  3/4 ==  33/4  = 8 1/4

Can you clarify what 'area on a net'    IS ?   

If you mean 'area OF a net'     it is  L x W     Lenght x Width 

i = monthly interest rate (since it is compunded MONTHLY)

FV = Future Value   PV = Present Value

FV = PV(1+i)^n        Where n = number of interest periods(MONTHS)

35000 = 10500 (1 +i)^144

35000/10500 = (1+i)^144    Take LOG of both sides

.522878 = 144 log(1+i)         Divide both sides by 144

.003631102 = log(1+i)           Raise each side to the 10

10^(.003631102)  = 1+ i

1.008395971  = 1 + i           Subtract 1

.008395971 = i      THAT is the MONTHLY rate     YEARLY rate would be x 12 = .10075   or   10.075% Annual

17  & 5 & 1 & 85