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Bingel [31]
3 years ago
6

Simplify this expression for 19 point! -0.5p+1/2p-2.75+2/3p

Mathematics
1 answer:
defon3 years ago
7 0

Answer:

you mean 10?

-2.75+\frac{2p}{3}

Step-by-step explanation:

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Please please answer this correctly
KATRIN_1 [288]

Answer:

15.71

Step-by-step explanation:

5 0
3 years ago
Please help me I dont understand this AT ALL!
Vladimir79 [104]
The probability of rolling a 1 or a 5 is 16/40 reduced to 2/5.  16/40÷8 16÷8=2 40<span>÷8=5 so your probability is 2/5 or 40%
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5 0
3 years ago
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 cheetah can run 70 miles per hour.what is this speed in feet
Fittoniya [83]
369,600 feet per hour
3 0
2 years ago
What is the slope of the line through the points (0, 0) and (2, 6)
EleoNora [17]
For this problem, you would use the slope formula, or m=(y2-y1)/(x2-x1). So, let's put in what we know.

The x's and y's correspond with our coordinates. So let's plug that in:

m=(6-0)/(2-0)
m=(6)/(2)
m=3

So, the slope of your line is 3.
6 0
3 years ago
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