anonymous
  • anonymous
Eduardo solved the following inequality and his work is shown below: -5(x + 4) + 21 ≥ -3 + 4(x - 8) -5x - 20 + 21 ≥ -3 + 4x - 32 -5x + 1 ≥ 4x - 35 -9x ≥ -36 x ≥ 4 What mistake did Eduardo make in solving the inequalit
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
He subtracted 4x from both sides when he should have added 5x. He did not make a mistake. When dividing by -9, he did not change the ≥ to ≤. He subtracted 1 from both sides when he should have added 36.
anonymous
  • anonymous
anybody help
pooja195
  • pooja195
Hi Welcome to openstudy :) What do you think the answer is?

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More answers

anonymous
  • anonymous
i think it is d
starwars18
  • starwars18
thats a good try, but its not correct
pooja195
  • pooja195
May I know why you think it is D?
starwars18
  • starwars18
yes, poojas got the right idea. explain yourself, so we can help better.
starwars18
  • starwars18
do you know the rules for both addition/subtraction and multiplication/division for inequalities?
starwars18
  • starwars18
when you divide or multiply, you flip the way the inequality faces, so c would be the answer. Understand?
anonymous
  • anonymous
oh yeah i understand now . wow thanx
anonymous
  • anonymous
can u help me with another one.
starwars18
  • starwars18
sure
anonymous
  • anonymous
A cab charges $1.50 for the flat fee and $0.50 for each mile. Write and solve an inequality to determine how many miles Sharon can travel if she has $25 to spend.
anonymous
  • anonymous
A cab charges $1.50 for the flat fee and $0.50 for each mile. Write and solve an inequality to determine how many miles Sharon can travel if she has $25 to spend.
anonymous
  • anonymous
$0.50 + $1.50x ≥ $25; x ≥ 16 miles $1.50 + $0.50x ≥ $25; x ≥ 47miles $0.50 + $1.50x ≤ $25; x ≤ 16 miles $1.50 + $0.50x ≤ $25; x ≤ 47 miles
anonymous
  • anonymous
i think its b
starwars18
  • starwars18
close, but not quite, explain why you think that.
starwars18
  • starwars18
remember, 25 dollars is the maximum you can have
anonymous
  • anonymous
it c then
starwars18
  • starwars18
it would be d. similar to your original guess, just the inequality must be flipped. 25 is the max, you cant spend more so it must be less than or equal to 25
anonymous
  • anonymous
Evelyn has $524.96 in her checking account. She must maintain a $500 balance to avoid a fee. She wrote a check for $32.50 today. Write and solve an inequality to solve for the least amount of money she needs to deposit to avoid a fee. (2 points) 524.96 - 32.50 + x ≤ 500; x ≤ $7.54 524.96 - 32.50 + x ≥ 500; x ≥ $7.54 524.96 + 32.50 - x ≥ 500; x ≥ $57.46 524.96 + 32.50 - x ≤ 500; x ≤ $57.46
anonymous
  • anonymous
this one is A right

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