Answer:
number of scores between 490 and 610 is = 0.68 x 300 = 204
Step-by-step explanation:
The concept of Probability distribution is applied as it relates to the Z-scores.
Z = X - Mean /Standard deviation
The detailed steps and appropriate substitution is as shown in the attached file.
You can use permutations when order matters and use combinations when order doesn’t matter.
Answer:
k = -4
Step-by-step explanation:
(k - 10)/2 = -7
First: multiply by 2 to get rid of the denominator
2(k - 10)/2 = 2(-7)
k - 10 = -14
Next: add 10 to both sides to isolate k
k - 10 + 10 = -14 + 10
k = -4
Answer: 1.75
Step-by-step explanation:
12x-3=18
+3 +3
12x=21
12 12
x=1.75
