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andreev551 [17]
3 years ago
7

Please help I need help

Mathematics
1 answer:
navik [9.2K]3 years ago
4 0

Answer:

L=10pi, or 31.42

Step-by-step explanation:

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5x + 9 = 5 + 3x : solve
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5x - 9 = 5 - 3x

5x - 3x = 5 - 9

2x = -4

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Hope this helped you.

Could you maybe give brainliest..?

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5 0
4 years ago
The mean height of a sample of 15-year-old boys is 175 centimeters, with a standard deviation of 10. For a sample of 15-year-old
Alina [70]
The equation for standard deviation is finding the mean of the numbers, subtracting each of the initial numbers by the mean, squaring each of the results, finding the mean of these results added together, then finding out the square root of the results added together.

The mean of 175 and 165 is 170, subtract 175 and 165 by 170, and you get 5 and -5 respectively. Then, square the results and you get 25 and 25.

Add the two numbers together (25 & 25) then find the square root of it, which is <span>7.07106781187, simplified to 7.07.</span>
4 0
3 years ago
Why is ti that when you add two numbers together (5+5,6+6,3+3, etc.) you get an even sum?? I need this for my 8 year-old-brother
astra-53 [7]

Essentially, the rule goes as so: odd + odd = even, even + even = even.

Although that may not be the answer you're looking for, it is a math rule that is never debunked and essentially the premises for why you get an even sum practically always depending on the numbers.

Hope this helps!

3 0
3 years ago
Read 2 more answers
Can someone help me on this
Vladimir79 [104]

Answer:

7%

Step-by-step explanation:

8 0
4 years ago
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Y-y1=m(x-x1) she kdhkshs jshdkhd
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