Use the given information to find the exact value of the expression. sin θ = 24/25, θ lies in quadrant ii find tan 2θ. a. - 526/527 b.336/625 c. -336/527 d. 336/527

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

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.

Find the least common denominator for thesetvo rational expressions.n^2/n^2+4n+4 -3/n^2+7n+10