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diamong [38]
3 years ago
6

$250 plus the current balance

Mathematics
1 answer:
makvit [3.9K]3 years ago
3 0
250+x might be the right answer because of 250 PLUS the current balance so the current balance would stand for x
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What are the first, second, and third frequencies audible from a 20 cm long organ pipe when (A) only one end is open and when (B
kotykmax [81]
A) The answers are:
the first frequency - 428.75 Hz
the second frequency - 1286.25 Hz
the third frequency - 2143.75 Hz

The frequency (when the pipe is closed) is: f = v(2n - 1)/4L
v - the speed of sound
n - the frequency order
L - the length of the organ pipe

We know:
v = 343 m/s
L = 20 cm = 0.2 m

1. The first frequency (n = 1):
f = 343 * (2 * 1 - 1) / 4 * 0.2 = 343 * 1 / 0.8 = 428.75 Hz


2. The second frequency (n = 2):
f = 343 * (2 * 2 - 1) / 4 * 0.2 = 343 * 3 / 0.8 = 1286.25 Hz


3. The third frequency (n = 3):
f = 343 * (2 * 3 - 1) / 4 * 0.2 = 343 * 5 / 0.8 = 2143.75 Hz


B) The answers are:

the first frequency - 857.5 Hz
the second frequency - 1715 Hz
the third frequency - 2572.5 Hz

The frequency (when the pipe is open) is: f = vn/2L
v - the speed of sound
n - the frequency order
L - the length of the organ pipe

We know:
v = 343 m/s
L = 20 cm = 0.2 m

1. The first frequency (n = 1):
f = 343 * 1 / 2 * 0.2 = 343 / 0.4 = 857.5 Hz


2. The second frequency (n = 2):
f = 343 * 2 / 2 * 0.2 = 686 / 0.4 = 1715 Hz


3. The third frequency (n = 3):
f = 343 * 3 / 2 * 0.2 = 1029 / 0.4 = 2572.5 Hz
4 0
3 years ago
A toy store orders jigsaw puzzles for $3.05 and sells them for $4.95. What is the percent of markup? Round your answer to the ne
Novay_Z [31]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

the percent of markup <span> 62.3% 

</span>$3.05 -> $4.95 

<span>Difference = $1.90 </span>
<span>Percentage of increase = 1.90/3.05 = Approximately 0.6229 = 62.3% = D </span>
5 0
3 years ago
What is the slope<br> A. Undefined <br> B. 0
Tasya [4]
i think its undifined
maybe it is. Because you can't see something there
3 0
3 years ago
Solve for the variable using cross products. <br> 3/5 = x/6 <br> Solve for x as a decimal
Lynna [10]

Answer:

x = 3.6

Step-by-step explanation:

3/5 = x/6

multiply both sides by 6

18/5 = x

as a decimal

x = 3.6

4 0
3 years ago
Read 2 more answers
Car A began a journey from a point at 9 am, traveling at 30 mph. At 10 am car B started traveling from the same point at 40 mph
mafiozo [28]

At 10 am, Car A is at 30 miles.

Then at 11 am, Car A is at 60 miles and Car B is at 40 miles

At 12 am, Car A is at 90 miles and Car B is at 80 miles

At 1 pm, Car A and B are tied for 120 miles

The very second after Car B passes Car A

Answer: 1:01 pm Car B Passes Car A

5 0
3 years ago
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