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elena55 [62]
2 years ago
8

What is the answer?​

Mathematics
1 answer:
hammer [34]2 years ago
8 0

Answer:

x = 27

Step-by-step explanation:

Angle A and angle E are the same value, therefore you could replace angle E with angle A. So that would make a triangle with angle C, angle D, and angle A. Knowing the sum of all angles in a triangle is 180, we can make an equation representing this.

3x - 10  + 2x + 10 + 45 = 180

Now simply silve the equation to find x.

5x + 45 = 180 \\ 5x = 135 \\ x = 27

There is your answer.

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Answer:

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Step-by-step explanation:

Data provided in the question:

For sample 1:

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Now,

The pooled variance is calculated using the formula,

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The correct answer is option (a) It will be closer to 30 than to 20

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