The pitch of the siren of a moving fire truck changes from high to low as the fire truck passes by. What property of a sound wave changes as the fire truck goes
by?
O A. amplitude
O B. density
OC. temperature
OD. frequency
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Ответ:
The surface area of a sphere can be found using the formula SA=4(x)pi(x)R squared. Middleton Middle School wants to paint kickballs purple for their carnival. The kickballs are all the same size. They used 6923.7 inches
of paint when painting 5 kickballs. What is the radius of each purple kickball? Use 3.14 for pi
x=times
Explanation: