11. The frequency of a musical note, measured in hertz (Hz), is called its pitch. The pitches of the A keys
on a piano change exponentially, as shown.
A,
A,
55 H7
A2
110 Hz
A4
440 Hz
220 Hz
What is the frequency of Az?
(A) 880 Hz
(C) 3520 Hz
(B)
(D)
1760 Hz
7040 Hz

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.

h= 12 inches

step-by-step explanation:

idk

step-by-step explanation: