22.5(10-y)+27.5y=250 what does y equal

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

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