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:
you could do 27+x=30
Step-by-step explanation:
This is how you do it!
So, There is a ratio of 1:2 for the orange to green.
This means that e can write an equation like this:
Let x be the orange picks
x + 2x = 12
3x = 12
x = 4
This means that there are 4 orange picks, and also 8 green picks
Now we can check that by simplifying the ratio --> 4:8 = 1:2
Therefore, your answer would be 8 green picks
Hope this helped!
Answer:
b. The variable will always be the letter x (false)
Step-by-step explanation:
Variables can be any letter or symbol. The letter x is often used as a variable, but that is not the only choice. Many formulas, for example, make use of variables that have letters reminding you what they stand for.
For example, the formula ...
A = 1/2(b1 +b2)h
uses the variables A, b1, b2, and h to represent area, base-1, base-2, and height, respectively. The letter x is not used at all.
Answer:
A. 1/2
Step-by-step explanation:
3/16 / 3/8
3/3 = 1
16/8 = 2
1/2
