What is the measure of the central angle of a circle with radius 15 ft that intercepts a 10 ft arc? Use 3.14 for T.
Round the answer to the hundredths place.
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If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

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.

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?