There is a big family reunion and you need to have enough spots at the table for the family to sit at. you need to sit 64 people and every 3 tables holds 8 people. so how many tables do you need?
Answer 24
I think that's how you do it.
The sum of n = n +
and the sum of 8 and 6 = 8 + 6
n + (8 + 6)
Answer:
x=-22
Step-by-step explanation:
1/2(x+18)=4(2x-6)-9x
Distribute the 4
1/2(x+18)=4(2x)-4(6)-9x
1/2(x+18)=8x-24-9x
Combine like terms
1/2(x+18)=-x-24
Multiply each side by 2
2*1/2(x+18)=2(-x-24)
Distribute
x+18 = -2x-48
Add 2x to each side
x+2x+18 = -2x+2x-48
3x+18 = -48
Subtract 18 from each side
3x+18-18 = -48-18
3x = -66
Divide by 3
3x/3 = -66/3
x = -22
The expected value if I have to pick one package given the price I would have to pay is $0.11.
<h3>What is the expected value?</h3>
The expected value is the cost you would have to pay subtracted from the total value of one package.
Total value of one package =[ (15 x 0.60) + (5 x 0.3) + (20 x 0.7)]/ (20 + 15 + 5) = $0.61
Expected value = $0.61 - $0.50 = $0.11
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I set it up as a ratio with hours on the top and the fraction of the job on the bottom. It looks like this: 5/(2/3) / x/1, because 1 is the whole job if 2/3 is only a fraction of it. Cross multiplying gives you 2/3x = 5. Solving for x gives you that it will take 7.5 hours to complete a whole job if it takes 5 hours to complete 2/3 of it.
