13x+2=11x-1
-13x -13x
2=-2x-1
+1 +1
3=-2x
3/-2=-2/-2x
-1.5=x
33/3=11
There are 11 students per class.
Answer:
To find the percetage of data points that lie between the points -3.01 and 2.61, on a normal distribution we're going to need the help of a calculator. The result is: 99.42%
Attached you will find the graph that represents the result.
Answer:
a=90
c=40
b=70
Step-by-step explanation:
a is right angle so 90
c is 160-90-30=40
b is 150-80=70