10 students averaged 80, so the sum of their scores was (10 x 80) = 800
20 students averaged 89, so the sum of their scores was (20 x 89) = 1,780
All together, the sum of all 30 scores was (800 + 1,780) = 2,580
30 students totaled 2,580, so their average was (2,580 / 30) = <em> 86</em> .
Answer:
y=2x+6
Step-by-step explanation:
Slope of line is 2
Plug slope and first set of coords into point-slope intercept form
Answer:
Hiya there!
Step-by-step explanation:
One hundred ninety-eight and sixteen hundredths.
I think this is correct i'm not that sure.
Hope this <em><u>Helped!</u></em> :D
Answer:
Step-by-step explanation:
That's just about impossible to determine...
The simplified expression would be as follows: 5y + 26
