Answer by JKismyhusbandbae: 9
(5 + 12 + 8 + 12 + 11 + 8 + 5 + 5 + 7 + 12)/10=9
To find the mean, add up all the lengths and divide by 10.
5x + 25y = 60....multiply by -3
3x + 15y = 42....multiply by 5
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-15x - 75y = - 180 (result of multiplying by -3)
15x + 75y = 210 (result of multiplying by 5)
-------------------add
0 = 30...incorrect.....this system has no solutions
Answer:
Because there are 4 ways to pick red then 4 (C)
76/80
Just divide 76 out of 80 and round it to the nearest hundredth
Or at least that’s what I think
Answer:

Step-by-step explanation:
Get rid of the parenthesis then combine like terms