Ummmmm what? Is this a troll or something
Answer:
8 nickels
Step-by-step explanation:
Total Amount of Money owned by Jason=$10
1 nickel =$0.05
1 dime=$0.10
1 quarter =$0.25
- Let the number of dimes =d
- Let the number of nickels =n
- Let the number of quarters =q
If there were twice as many dimes as Nickels, then:
Also, there were twice as many quarters as dimes.
Therefore:
0.1d+0.05n+0.25q=100
Substituting d=2n and q=2d into the above relations
0.1(2n)+0.05n+0.25(2d)=10
0.2n+0.05n+0.25(2(2n))=10
0.2n+0.05n+1n=10
1.25n=10
n=8
q=2d=2X16=32
d=2n=2X8=16
Jason had 8 nickels
8/18 = 4/9 ( divide both numerator and denominator by 2 )
√4 = 2 and √9 = 3
Answer:
B ) 2/3
Answer:
E. The student scored 1.3 standard deviations lower on the second exam than the class average on the second exam.
Step-by-step explanation:
Whenever we have a negative z-score, this means that the raw score is a certain standard deviation below the mean average.
From the above question, we are told that:
An AP Statistics teacher grades using z-scores. On the second major exam of the grading period, a student receives a grade with a z-score of -1.3.
This means the students score in the second major exam is 1.3 standard deviations below the average score in the second major exam.
Hence, according to the options given in the above question, the correct interpretation of this grade is
The student scored 1.3 standard deviations lower on the second exam than the class average on the second exam.
Option E is the correct option.