Melody

I have no idea what you are asking.

(+1)+x i  = 1+xi

Yes now that I open my eyes I can see that ... 

Anyway, you can answer that part yourself now :)

sorry

sqareroot of 16 over 25

\(\sqrt{\frac{16}{25}}=\frac{\sqrt{16}}{\sqrt{25}}=\frac{4}{5}\)

\(\frac{\sqrt{16}}{25}=\frac{4}{25}\)

42

What is the formula for the area of a circle Britney?

If you do not know, perhaps you could google it:/

Thanks Britette :)

2y-3x=4   (1)

 3y-3x=1    (2)

(2)-(1)

3y-2y-3x--3x=1-4

y=-3

y=-3

sub into (1)

2*-3-3x=4

-6-3x=4

-3x=10

x=-10/3

so

x=-10/3      y=-3

check by subbing into (2)

LHS=3*-3   -   3*-10/3 = -9+10 = 1 = RHS   excellent :)

Существует не один. Все расчеты могут быть выполнены без них!

x+y+z+ø= 85

X=ø-4

y=x/8

z=x/9

       
\(x+y+z+\phi = 85\\ x=\phi-4\\ y=x/8=\frac{\phi-4}{8} \\ z=x/9=\frac{\phi-4}{9} \\~\\ so\\ \phi-4+\frac{\phi-4}{8} +\frac{\phi-4}{9} =85\\ 72\phi-4*72+72*\frac{\phi-4}{8} +72*\frac{\phi-4}{9} =72*85\\ 72\phi+9(\phi-4)+8(\phi-4) =72*85+4*72\\ 72\phi+17(\phi-4) =72*89\\ 72\phi+17\phi-68 =72*89\\ 89\phi =72*89+68\\ 89\phi =6476\\ \phi=\frac{6476}{89}\\ \text{Now just do the substitutions to get the other pronumerals}\\ \text{The sub the answers back in to check it is all correct.}\)