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Strike441 [17]
3 years ago
15

I need help and yes i know i am an idiot UwU

Mathematics
1 answer:
arlik [135]3 years ago
3 0

Answer:

c

Step-by-step explanation:

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Calculate the frequency of a wave with a speed of 130 m/s and a wavelength of 2.5
denis23 [38]

Answer:

  52 Hz

Step-by-step explanation:

We can divide the speed by the wavelength to find the number of waves propagated in one second:

  (130 m/s)/(2.5 m/wave) = 52 waves/s

The SI unit of frequency is the Hertz, equal to one cycle per second.

The frequency of this wave is 52 Hz.

_____

<em>Additional comment</em>

The use of the unit Hz to signify frequency was adopted in 1933, but did not replace the unit "cycles per second" (CPS) until a number of years later.

3 0
2 years ago
The radius of a circle is 7 millimeters. What is the circle's area?<br> r=7 mm<br> Use 3.14 for a.
givi [52]

Answer:

153.86

Step-by-step explanation:

formula - A = π × r2

3.14 x 7^2

= 153.86

4 0
3 years ago
What is the value of n?<br><br><br><br> n–2=10n+42
Bingel [31]

Answer:

N= -44/9 Hope this helped, <3

Step-by-step explanation:

Let's solve your equation step-by-step.

n−2=10n+42

Step 1: Subtract 10n from both sides.

n−2−10n=10n+42−10n

−9n−2=42

Step 2: Add 2 to both sides.

−9n−2+2=42+2

−9n=44

Step 3: Divide both sides by -9.

5 0
3 years ago
Read 2 more answers
An airplane travels at a constant speed of 300 miles per hour. How far, in miles, will the airplane travel in 20 minutes?​
Strike441 [17]

Answer:

100 miles in 20 minutes.

Step-by-step explanation:

300/60 = x/20

x = 300/60 * 20

x = 100

7 0
3 years ago
32 customers in 4 checkout lanes
viva [34]
I don’t know what the question is but it would be 8 divides out evenly
5 0
3 years ago
Read 2 more answers
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