lokiisnotdead

hi guest!
 

to solve this we can make an equation: 

\(6x=x-20\)

now, we can just simplify!

\(5x=-20\)

\(\boxed{x=-4}\)

i hope this helped you!

:)

thanks melody! i got it right!!! :)

sorry.. that's not right :(

hi guest!

the formula for the sum is \(\dfrac{a_1+a_n}{2}\cdot n\)

where n is the number of terms

there are 200-101=99. 99+1=100 terms.

so, the sum is \(\dfrac{101+200}{2}\cdot 100=\boxed{15050}\)

i hope this helped you!

:)

hi guest!
 

hi guest!

 \(f(x)=\frac{x+2}{x-2}\)

To find the inverse, you can first replace f(x) for y. \(y=\frac{x+2}{x-2}\)

1. we replace the x with y.  \(x=\frac{y+2}{y-2}\)

2. cross multiply:

 \(x(y-2)=y+2\)

\(xy-2x=y+2\)

\(xy-y=2x+2\)

\(y(x-1)=2x+2\)

3. divide both sides by x-1: \(y=\frac{2x+2}{x-1}\)

And that's the answer! \(\boxed{y=\frac{2x+2}{x-1}}\)

i hope this helped you!

:)

oh ok.. thanks guest! :)

hi guest!

thanks guest! :)