Ask question

Ask question

All categories

3 years ago

12

a musician increases the wavelength of the sound waves she produces without changing their speed. What must be happening to thei

r frequency of the waves?

1 answer:

Ilya [14]3 years ago

7 0

Longer wavelength means lower frequency (lower pitch)

You might be interested in

Please help! functions operations. explain please

Lina20 [59]

Answer:

$f^{-1}(x)=x^2-3$

Step-by-step explanation:

Given $f(x)=\sqrt{x+3}$

Let $y=\sqrt{x+3}$

Interchange x and y

$x=\sqrt{y+3}$

Solve for y, by first squaring both sides

$x^2=y+3$

$x^2-3=y$

Hence

$f^{-1}(x)=x^2-3$

The last choice is correct

5 0

3 years ago

X/16-g=a what would x =???

exis [7]

Answer: x - 777 = 0

Step-by-step explanation

x = 777

Move the contrast to the left

x - 777 = 777 -777

Eliminate the opposites

7 0

2 years ago

If 1 inch represents 65 miles on a map, then how many inches will represent 2210 miles?

Talja [164]

Answer:

34

Step-by-step explanation:

2210 / 65 = 34. There is no further explanation

8 0

2 years ago

Please help me with this problem. I have tried many times and have gotten it wrong. I need help especially on the last part. Can

Arlecino [84]

1) The domain is all the possible x values in the function so it would be [-4,4]

2) There are only 3 zeros shown on the graph and they are (-2, 0) (0, 0) (2, 0) the zeros are the value of x when y = 0.

3)The function is positive/Negative is asking for what x values make the y values positive aka interval notation. The function is positive if x = (0, 2) because 0 and 2 aren't included you use parentheses () instead of brackets []

The function is negative if x [-4, -2), (-2,0), (2,4]

5 0

3 years ago

11 The sides of two similar triangle are in a ratio of 5:6. The area of the larger triangle is 108.

Elodia [21]

Answer:

The area of the smaller triangle is 75.

Step-by-step explanation:

Here, the ratio of the sides of the similar triangle are 5 : 6

The area if the larger triangle = 108

let us assume that the area of the smaller triangle = m

By the Theorem:

In two similar triangles, the ratio of the areas of similar triangles is the square of the ratio of their sides.

Similarly, here

$[tex](\frac{5}{6}) ^2$ = \frac{m}{108}[/tex]

⇒ $\frac{(5)^2}{(6)^2} = \frac{m}{108}$

or, $\frac{25}{36} = \frac{m}{108} \implies m = \frac{108 \times 25}{36} = 75$

⇒ m = 75

Hence, the area of the smaller triangle is 75.

6 0

3 years ago