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sashaice [31]
3 years ago
13

The probability that you will get grounded if you have a bad grade is 85%. The probability that you will get grounded and have e

xtra chores is 50%. What is the probability that you will have extra chores given that you are already grounded? Express your answer as a percent.
Mathematics
2 answers:
Westkost [7]3 years ago
5 0
50% since we are already grounded.
marusya05 [52]3 years ago
3 0
Your answer is 
50n
23n
5
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Distributive property/collecting like terms. 4n -2 - 2n
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7 0
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Can someone work this out for me please? I'm so confused.
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4 0
2 years ago
Read 2 more answers
Story Problems
Gnom [1K]
Problem 3: Let x = price of bag of pretzels Let y = price of box of granola bars  
We have Lesley's purchase: 4x+2y=13.50
 And Landon's: 1x+5y=17.55 
 We can use the elimination method. Let's negate Landon's purchase by multiplying by -1. -1x-5y=-17.55 
 We add this four times to Lesley's purchase to eliminate the x variable.
 2y-20y=13.50-70.2
 -18y=-56.7
 y = $3.15 = Price of box of granola bars
 
 Plug back into Landon's purchase to solve for pretzels.
 x+5*3.15=17.55
 x+15.75=17.55
 x = $1.80 = price of bag of pretzels
  
 Problem 4.
 Let w = number of wood bats sold
 Let m = number of metal bats sold
 
 From sales information we have: w + m = 23
 24w+30m=606 
 Substitution works well here. Solve for w in the first equation, w = 23 - m, and plug this into the second. 
 24*(23-m)+30m=606
 552-24m+30m=606
 6m=54
 m=9 = number of metal bats sold
 Therefore since w = 23-m, w = 23-9 = 14. 14 wooden bats were sold.


6 0
3 years ago
Read 2 more answers
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