HELPHELPHELP I AM NOT SURE TO START OR END I MUST B STUPID

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morgana

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Jan 7, 2009
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7 1/2 <n-(-7/8
IT LOOKS EASY BUT ITS NOT.. THE FIRST TIME I DID IT I GOT-2.62 IT WAS WRONG
 
morgana said:
7 1/2 <n-(-7/8
IT LOOKS EASY BUT ITS NOT.. THE FIRST TIME I DID IT I GOT-2.62 IT WAS WRONG
Click to expand...

Please show us your work, even if you think it is wrong - so that we know where to begin to help you.
 


You did not type a closing parenthesis, so it looks like part of the problem is missing.

Also, does 7 1/2 mean "seven and one-half"?

 
no i forgiot the parentheses on the 1st one and yes it means 7 ans one half,
 
morgana said:
-4.62 = h + (-9.4)

what about this one? i got -14.02
Click to expand...


Adding negative 9.4 is the same as subtracting positive 9.4, so we can rewrite the equation without the parentheses as follows.

-4.62 = h - 9.4

To solve this equation for h, we need to add 9.4 to both sides. Doing this will leave h all by itself on one side of the equation.

Can you do this addition?

 
morgana said:
… i forgiot the parentheses on the 1st one and yes it means 7 ans one half
Click to expand...


Okay, if the parenthesis is the only part that you left off, then negative 7/8ths is being subtracted from the variable n.

Subtracting a negative number is the same as adding its opposite.

In other words, subtracting -7/8 is the same as adding 7/8. This rule allows us to get rid of the parentheses, as follows.

15/2 < n + 7/8

Notice that I also changed the mixed number 7 1/2 to the improper fraction form 15/2.

This makes the arithmetic clearer when working with fractions.

To solve this inequality, we now subtract 7/8 from both sides.

Do you know how to do arithmetic with fractions?

 
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