The dressmaker can cut 60 12 inch pieces of ribbon
Answer:
You need 30 total weeks to win at least 65% games
Step-by-step explanation:
Team have played = 20 games
Number of winning games = 3
Let x represents the number of additional weeks.
You have won 3 games per week. Therefore you will win 3x additional games.
We know that 65% = 0.65
Therefore,
3+3x/20+4x = 0.65
By cross multiplication:
3+3x= 0.65(20+4x)
3+3x = 13+2.6x
Combine the like terms:
3x-2.6x = 13-3
0.4x=10
4x/10 =10
4x = 10*10
4x=100
Divide both sides by 4
4x/4 = 100/4
x = 25
since you have already played 5 weeks...you need to play 25+5 = 30 weeks.
Therefore you need 30 total weeks to win at least 65% games....
(-7)*(2/5 + (-3/7))
= -14/5 + 3
=1/5
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