SOLUTION: Solve for the variable in each equation below. Show all your work. Provide a check for each answer. If a solution is undefined, state that in your answer.
1-.1y>.2
My work
Algebra ->
Expressions-with-variables
-> SOLUTION: Solve for the variable in each equation below. Show all your work. Provide a check for each answer. If a solution is undefined, state that in your answer.
1-.1y>.2
My work
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Question 353362: Solve for the variable in each equation below. Show all your work. Provide a check for each answer. If a solution is undefined, state that in your answer.
1-.1y>.2
My work so far:
1-.1y>.2 Then subtract 1 from each side
-.1y>.8
Multiply each side by 10
And I got -y>-8 <--that's the answer I think.
CHECK:
1-.1(9)>.2
1-.9>.2
= .1>.20 Is this right??? Please help me! Thanks! :)
First, a general comment. NEVER, EVER subtract or divide. Always add or multiply. Watch:
ADD to both sides:
(Looks uglier, but doing it this way keeps you from making sign errors)
You next multiplied both sides by 10. Close but no cigar. You also need to get rid of the minus sign in front of the , so multiply by . The only thing is that, since you are working with an inequality, you have to reverse the sense of the inequality when you multiply by a negative number, so:
Check:
True
False
So answer checks.
John
My calculator said it, I believe it, that settles it
