Answer:
inegeters
Step-by-step explanation:
Let’s say the first class is X.
Avg(X)= x/20=15
X=300
Let’s say the second class is Y.
Avg(Y)= Y/30=20
Y=600
X+Y=900
AVG(X+Y)=900/(20+30)=900/50=18
The average of both classes is 18.
Answer: -1
2-1=1
1/-3+2
1/-1
=-1
Answer:
C
Step-by-step explanation:
The zeros are the values of x on the x- axis where the graph crosses.
the graph crosses the x- axis at 0 and 5
then the zeros are x = 0 and x = 5 → C
Answer:
10(X+Y)
Step-by-step explanation: