Answer:
Step-by-step explanation:
Since your population are the students in math class, you can use the z-score formula 
in order to comparing the two math test scores. Where 
is the mean for the class, 
is the standars deviation and x is Mary score.
For the first test 
, so ,
.
For the second test 
, so ,
Mary do better in the second test, relative to the rest of the class (because 
, it means the second score is nearer to the mean score of the class than the first one )
M=2<span>
y-intercept </span><span>b=<span>4I hope this helps
</span></span>
Answer:
3.6
Step-by-step explanation:
2(5m-8)+3(m+2)=12+4(2m-1)
10m - 16 + 3m + 6 = 12 + 8m -4
13m - 10 = 8 + 8m
13m = 18 + 8m
5m = 18
m = 3.6
Answer:
a. (45.5,9)
b.79 units
c.14 units
Step-by-step explanation:
