1. Enter the data into a spreadsheet. Be sure to clearly label and neatly format your spreadsheet. 2. Calculate the sum of these data two different ways: a. By writing your own formula. Clearly label the result. b. By using the SUM spreadsheet function. Clearly label the result. 3. Use the COUNT function to calculate the N of this sample data set. Clearly label the result.

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step-by-step explanation:

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sounds & other waves originate from any vibrating object

place r′ so that qr′ is parallel to the tangent.

now we get that ∠r′py=∠pr′q, where y is on the tangent, on the opposite side of p from x.

also, because of the symmetry, ∠r′py=∠qpx.

finally, note that no matter where we place r, as long as it's on the correct arc, we have ∠prq=∠pr′q.

stringing all these equalities together, we end up with ∠prq=∠qpx.

this picture will show how its going to look like.

hope this by jack monhen