Step-by-step explanation:
z = 86° (Because they are opposite angles)
z + 8x - 66° = 180° (They form a linear pair)
=> 86° + 8x - 66° = 180°
=> 8x - 66° = (180 - 86)°
=> 8x - 66 = 94°
=> 8x = 94° - 66°
=> 8x = 28
=> x = 28/8
=> x = 3.5°
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40( words per minutes) x 8 (minutes)= Your answer :)
576 because the triangle in the pyramid would be 216 divided by 2 is 108 since there is 4 triangles to a pyramid you multiply by 4 and that is 432. Then you add the area of the square which is 144 and add that to 432 which makes it 576
Answer:
(e) the mean number of siblings for a large number of students has a distribution that is close to Normal.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean and standard deviation .
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
By the Central Limit Theorem
The sampling distributions with a large number of students(at least 30) will be approximately normal, so the correct answer is given by option e.