Answer:
7x+9y=45
Step-by-step explanation:
-2.964 Your welcomeeeeeeeee
Answer:
just time the numbers all together and I think the answers is B
Answer:
30 are present 10 are absent
Step-by-step explanation:
75%=3/4
so 3/4 of them are absent
3/4(40)=30
and 40-30=10 are absent