iceecole6570

11.11.2020 • 

Mathematics

The lowest and leftmost note on a plano keyboard is an A. The next lowest Ais seven white keys to the right. This pattem continues. Write an explicit formula for an arithmetic sequence to represent the position of each A key on the
piano, counting from the left. If a piano has 52 white keys, in what position is the key that plays the highest A?

Ответ:

0Me0

12.04.2020

Mathematics

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63

Step-by-step explanation:

To find the area of a trapezoid you have to use the formula

a+b/2 h

So we would substitute them

3 + 15 / 2 x 7

Which would equal

63

Hope this helps :)

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