The red string r is 20 centimeters less than 5 times as long as the orange string s ." ​This can be represented by the expression r = 5 s − 20. Find the length of the red string​ if the length of the orange string is 10 centimeters. ​ The length of the red string is ​ centimeters.

Will give brainliest what is the value of x? enter your answer in the box.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap