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viva [34]
2 years ago
10

Select the correct answer. A sound wave enters a new medium where sound travels faster. How does this affect the frequency and w

avelength of the sound? A. The frequency increases and the wavelength decreases. B. The frequency decreases and the wavelength increases. C. The frequency stays the same and the wavelength increases. D. The frequency stays the same and the wavelength decreases. E. Neither the frequency nor the wavelength is affected.
Mathematics
1 answer:
Ulleksa [173]2 years ago
5 0

Answer:

The correct answer is E. Neither the frequency nor the wavelength is affected. Explanation: The wave frequency does not affect the speed of that wave. An increase in frequency of a wave causes a decrease in wavelength while the wave speed remains the constant. The speed of the waves is significantly higher at higher tensions.

Step-by-step explanation:

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vfiekz [6]

Answer:  The correct answer is:  [B]:  

____________________________________

                  →   " \frac{11}{6} " .

____________________________________________

Explanation:  

We are asked to solve:   |2/3-3/2|3^2-17/3  ;  

Let's rewrite this problem as:  

____________________________________________

Simplify:

 "  | \frac{2}{3} - \frac{3}{2} | * 3^{2} - \frac{17}{3} |  " ;

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7 0
3 years ago
Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.
Paraphin [41]

Answer:

88 inches

Step-by-step explanation:

Diameter is 2 times the radius (r) so divided 28 by 2 to get 14 as the radius.

Plug this in:

2π14

28π

87.964

88

6 0
3 years ago
Read 2 more answers
Which set of side lengths represents a triangle with 3 lines of reflectional symmetry
kicyunya [14]

Answer:

The Answer is C hope this helps!

Step-by-step explanation:

8 0
3 years ago
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Solve for x<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%20-%206%7D%7B4%7D%20%20%3D%20%20%5Cfrac%7B2x%20%2B%205%7D%7B3%7
Marizza181 [45]

Answer:

x = 9.5

Step-by-step explanation:

Given

\frac{4x-6}{4} = \frac{2x+5}{3} ( cross- multiply )

3(4x - 6) = 4(2x + 5) ← distribute parenthesis on both sides

12x - 18 = 8x + 20 ( subtract 8x from both sides )

4x - 18 = 20 ( add 18 to both sides )

4x = 38 ( divide both sides by 4 )

x = \frac{38}{4} = 9.5

6 0
3 years ago
60 percent of a number, minus 17, is -65
Reika [66]

Answer:

We have (60/100)·x - 17 = - 65;

Then (6/10)·x = 17 - 65;

(3/5)·x = - 48;

x = (5/3)·(-48);

x = 5·(-16);

x = - 80;

Step-by-step explanation:

7 0
3 years ago
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