Answer:
I think it's D cause it says less than 3 and all possible ways, so that's the only one that makes sense to me.
Answer:
The estimated impact of the experiment of offering test preparation classes is:
= 8 scores (in performance improvement).
Step-by-step explanation:
Average standardized-test score for the first 10 high schools = 69
Average standardized-test score for the second 10 high schools = 70
After 6 months:
Average standardized-test score for the first 10 high schools offered test preparation classes = 78
The change in the average standardized-test score for the first 10 high schools = 9 (78 - 69)
Average standardized-test score for the second 10 high schools not offered test preparation classes = 71
The change in the average standardized-test score for the second 10 high schools not offered the prep = 1 (71 - 70)
The estimated impact of the experiment of offering test preparation classes is:
= 9 - 1
= 8.
Answer:
5y3 without exponents would be 15.
the normal answer would be 15 y but they're no exponents.
The student made error in step 2 because negative multiplied by positive is negative. Also negative multiplied by negative is positive
Answer:
Step-by-step explanation:
Given: 
To find: solutions of the given equation
Solution:
Write 
Therefore,
So, solutions of the given equation are 
and 
.
