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Answer:
About 1.23 standard deviation above the mean
Step-by-step explanation:
From what we have here, we need to calculate the difference between the given value and the mean and divide by the standard deviation
That would be through calculating the z score as follows;
z-score = (x - mean)/SD
where x is the given value
z-score = (87-71)/13 = 1.23
Since the score is bigger than the mean, the correct choice here is that the score is about 1.23 standard deviation above the mean
Answer:
0.27
Step-by-step explanation:
1. put it into the division form which is 0.2268/ 0.84.
2. then see if 0.84 can go into 0.22 if not then 0.226
3. if yes see how many times it can go into 0.226 which is 2.
4. continute these steps until there is no remainder
Multiple the 2 numbers and you should get 0.594
Explanation is the pic
27y^3 -343 starts out with 27y^3, and 343 is the cube of 7. Thus, we know immediately that 27y3 -343 is the diffeence of two squares.
The appropriate rule is a^3 - b^3 = (a - b)(a^2 + ab + b^2).
Here, we have 27y3 -343 = (3y - 7)(9y^2 + 12y + 49)
