Answer:
You did the same on both exams.
Step-by-step explanation:
To compare both the scores, we need to compute the z scores of both the exams and then compare the values. The formula for z-score is:
<u>Z = (X - μ)/σ</u>
Where X = score obtained
μ = mean score
σ = standard deviation
For Exam 1:
Z = (95 - 79)/8
= 16/8
<u>Z = 2</u>
For Exam 2:
Z = (90 - 60)/15
= 30/15
<u>Z = 2</u>
<u>The z-scores for both the tests are same hence the third option is correct i.e. </u><u>you did the same on both exams.</u>
Answer:
-3x - 15
or
-3(x + 5)
Step-by-step explanation:
-3x - 3 - 12
-3x - 15
-3(x + 5)
sorry if this doesn't help but i hope it does
Start with the lowest prime number: 2
is 84 divisible by 2? Yes
so. 84/2 = 42
Check if it still divisible by 2,
yes, 42/2 = 21
check if it is still divisible by 2,
no, move to next prime number = 3.
check if it is divisible by 3
yes, 21/3 = 7.
now since, 7 is a prime number, we stop.
and the prime factors of 84 are : 2,2, 3, 7
4 prime factors, 3 distinct.
By adding all of the numbers on the the outside lines