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2 years ago

10

The ratio of rabbits to guinea pigs in a shop is 2:7. The ratio of brown rabbits to grey rabbits is 2:3.What fraction of the ani

mals in the shop are grey rabbits?

1 answer:

Arturiano [62]2 years ago

8 0

Answer: 2/15
Explanation: 2/9 x 3/5 then simplify it

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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

erma4kov [3.2K]

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.

D. we cannot tell because we do not know the frequency of the sound.

The right choice is:

B. open at one end and closed at one end .

Step-by-step explanation:

Given:

Length of the pipe, $L$ = 120 cm

Its wavelength $\lambda_1$ = 480 cm

$\lambda_2$ = 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.

So,

The fundamental wavelength:

⇒ $4L=4(120)=480\ cm$

It seems that the pipe is open at one end and closed at one end.

Now lets check with the subsequent wavelengths.

For one side open and one side closed pipe:

An odd-integer number of quarter wavelength have to fit into the tube of length L.

⇒ $\lambda_2=\frac{4L}{3}$ ⇒ $\lambda_3=\frac{4L}{5}$

⇒ $\lambda_2=\frac{4(120)}{3}$ ⇒ $\lambda_3=\frac{4(120)}{5}$

⇒ $\lambda_2=\frac{480}{3}$ ⇒ $\lambda_3=\frac{480}{5}$

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

So the pipe is open at one end and closed at one end .

6 0

2 years ago

The table represents the equation y = 2 – 4x. A 2-column table with 5 rows. The first column is labeled x with entries negative

kherson [118]

The missing value for $x=-1$ is $y=6$

Explanation:

It is given that the equation for the table is $y=2-4x$

The table has 2 column with 5 rows.

Thus, we have,

x y

-2 10

-1 ---

0 2

1 -2

2 -6

We need to determine the value of y when $x=-1$

The value of y can be determined by substituting $x=-1$ in the equation $y=2-4x$

Thus, we have,

$y=2-4(-1)$

Multiplying the term within the bracket, we have,

$y=2+4$

Adding the terms, we have,

$y=6$

Thus, the value of y when $x=-1$ is 6.

Hence, the missing value for $x=-1$ is $y=6$

7 0

1 year ago

Read 2 more answers

Steve is buying a sandwich for lunch and some fresh fruit juice for his friends. The sandwich costs $3.92 and the fruit juice co

Svetradugi [14.3K]

Answer:

D

Step-by-step explanation

2+2-4

4 0

2 years ago

Sati [7]

The solution
m = s + 5
<span>m - 4 = (3s) - 3 </span>
<span>(s + 5) - 4 = 3s - 3 </span>
<span>s + 1 = 3s - 3 </span>
<span>s = 3s - 4 </span>
<span>-2s = -4 </span>
<span>s = 2 </span>
<span>m = 7 </span>
<span>Check this: </span>

<span>m - 4 = 3s - 3 </span>
<span>7 - 4 = 3(2) - 3 </span>
<span>3 = 6 - 3 </span>
<span>3 = 3 </span>

<span>So Sandy is 2 and Megan is 7.</span>

5 0

1 year ago

You are 330 miles from home and you are driving toward home at an average of 55 mph. Write an equation to represent the situatio

Mars2501 [29]

Okay, I just know the answer not the range:

330 divided by 55 is 6. It would take 6 hours.

3 0

1 year ago

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