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Akimi4 [234]
3 years ago
14

Which expression is equivalent to (2x+5y)+(3x-2y)(2x+5y)+(3x−2y)?

Mathematics
1 answer:
Arlecino [84]3 years ago
4 0

Answer:

but i don't know what the numbers mean, this is incomplete

Step-by-step explanation:

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Stolb23 [73]

Answer:

its A

Step-by-step explanation:

5 0
3 years ago
Here a easy question for yall.
Gemiola [76]

Answer:

5

Step-by-step explanation:

The answer is 5 because it just is

5 0
3 years ago
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7 + (a+b) = (7+a) +b what is the property
morpeh [17]

Answer:

Associative property of addition

Step-by-step explanation:

To “associate” means to connect or join with something. According to the associative property of addition, the sum of three or more numbers remains the same regardless of how the numbers are grouped.

4 0
4 years ago
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kvv77 [185]

Answer:

I think that B is correct

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3 0
3 years ago
You measure 25 turtles' weights, and find they have a mean weight of 31 ounces. Assume the population standard deviation is 12.8
Firlakuza [10]

Answer:

Margin of error = 4.21 ounces  

Step-by-step explanation:

According to the Question,

  • Given That, You measure 25 turtles' weights, and find they have a mean weight of 31 ounces. Assume the population standard deviation is 12.8 ounces

Therefore, Sample mean = 31 ounces  ,  Sample size(n) = 25 , Alpha(α) = 0.10 & Population standard deviation(σ) = 12.8 ounces

  • Thus, Margin of error  = Z_{critical} × σ / √n  (Z_{critical} at α=.010 is 1.645)

Putting The Values, We get

1.645 × (12.8 / √25 ) ⇒ 4.2112 ≈ 4.21

Thus, the maximum margin of error associated with a 90% confidence interval for the true population mean turtle weight is 4.21 ounces

8 0
3 years ago
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