A number times 1 always equals itself, so: 4×1 = 4, OR 2×2 = 4
Answer:
Step-by-step explanation:
hello :
ax+b =4x+9 so a=4 and b=9
Answer: half the number?
If you write an equation for it:
Let the number be x
1/2x = x - 1/2x
To do that you'll need the mean and standard deviation of all the scores. Can you provide this info?
For example: Supposing that the mean of these scores were 52 and the standard deviation 3. You'd need to find the "z-score" of 57 in this case.
57 - 52
It is z = ------------ , or z = 5/3, or z = 1.67.
3
Find the area to the left of z = 1.67. Multiply that area by 100% to find the percentile rank of the score 57.