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2 years ago

15

Add 1 4/12 +9/12 Convert to a mixed fraction,

1 answer:

11Alexandr11 [23.1K]2 years ago

5 0

Answer:

2 ¹/12

Step-by-step explanation:

convert 1 4/12 to an improper fraction

(1×12+4)=16/12

16/12+9/12=25/12

convert 25/12 to a mixed fraction

=2 ¹/12

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2 years ago

A pipe that is 120 cm long resonates to produce sound of wavelengths 480 cm, 160 cm, and 96 cm but does not resonate at any wave

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Answer:

A Pipe that is 120 cm long resonates to produce sound of wavelengths 480 cm, 160 cm and 96 cm but does not resonate at any wavelengths longer than these. This pipe is:

A. closed at both ends

B. open at one end and closed at one end

C. open at both ends.

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Step-by-step explanation:

Given:

Length of the pipe, $L$ = 120 cm

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$\lambda_2$ = 160 cm and $\lambda_3$ = 96 cm

We have to find whether the pipe is open,closed or open-closed or none.

Note:

The fundamental wavelength of a pipe which is open at both ends is 2L.
The fundamental wavelength of a pipe which is closed at one end and open at another end is 4L.

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The fundamental wavelength:

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