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:
Answer:
John is 12 years old.
Step-by-step explanation:
She is three times as old as an 8 years old.
8*3 = 24
Twice as old as John. John is half her age.
24/2 = 12
Answer: 5 inches.
Step-by-step explanation:
The formula for calculate the area of a rectangle is:

Where l is the length and w is the width.
If the length of a rectangle is 3 inches more than twice it’s width, then:

Substitute
and the area into the formula and solve for the width:

Use the quadratic formula:

Choose the positive value.
Therefore, the width is: 5 inches.