A building 50 ft high casts a 75 ft shadow. Sarah casts a 6ft shadow. The triangle formed by the building and its shadow is similiar to the triangle formed by Sarah and her shadow. How tall is Sarah

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

For g(x) = 5x - 3 and h(x) = [tex]\sqrt{x}[/tex], find (g · h)(4)