What is the multistep equation of 0.25[2.5x+1.5(x-4)]=-x

What value of x will make the triangles similar by the sss similarity theorem?

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.