C.,E
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Answer:
30, 30, 120
Step-by-step explanation:
I think it would be 2 days. you would get it done 4 times faster, so 8/4 is 2
Answer:
2n+10=-2
2n=-2-10
2n= -12
N= -12/2
n=-6
Step-by-step explanation:
Answer:
<u>Number of students:</u>
<u>Total of marks:</u>
- 5*6 + 4*7 + 7*8 + 10*9 + 4*10 = 244
<u>Mean mark:</u>