anonymous
  • anonymous
A stack of bricks is 3 1/2 feet high. If each brick is 1 3/4 inches high, how many bricks are in the stack? 2 12 24 28
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
@mathstudent55
mathstudent55
  • mathstudent55
You need to divide 3 1/2 by 1 3/4
mathstudent55
  • mathstudent55
Change each mixed numeral into a fraction, then divide the fractions.

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More answers

anonymous
  • anonymous
Explain to me how do i do that please ? @mathstudent55
anonymous
  • anonymous
@mathstudent55
anonymous
  • anonymous
@Hero
mathstudent55
  • mathstudent55
This is the operation you need to do. |dw:1436921214687:dw|
mathstudent55
  • mathstudent55
Do you know how to change a mixed numeral into a fraction?
anonymous
  • anonymous
i flipp it ?
mathstudent55
  • mathstudent55
No. We will flip the second fraction when we divide the fractions, but we're not there yet.
mathstudent55
  • mathstudent55
The first step is to rewrite both mixed numerals as fractions. This is how you do it. I will use a different example, not the mixed numerals from our problem.
mathstudent55
  • mathstudent55
|dw:1436921384449:dw|
anonymous
  • anonymous
do you multiply it
mathstudent55
  • mathstudent55
|dw:1436921416023:dw|
anonymous
  • anonymous
okay so 3 1/2 = 7/2 ?
mathstudent55
  • mathstudent55
|dw:1436921475247:dw|
mathstudent55
  • mathstudent55
Exactly. You learn fast.
anonymous
  • anonymous
Thank you :) You are a great teacher
mathstudent55
  • mathstudent55
|dw:1436921553999:dw|
mathstudent55
  • mathstudent55
Thanks. Do you follow so far? We now have rewritten both mixed numerals as fractions.
mathstudent55
  • mathstudent55
Now we can do the division. To divide two fractions, rewrite the first fraction as it was. Then change the division to a multiplication. Then flip the second fraction. Now multiply the fractions you have.
mathstudent55
  • mathstudent55
|dw:1436921765532:dw|
mathstudent55
  • mathstudent55
|dw:1436921813528:dw|
anonymous
  • anonymous
thank you so much
mathstudent55
  • mathstudent55
To multiply fractions, multiply the numerators together and multiply the denominators together. Then reduce the fraction if possible.
mathstudent55
  • mathstudent55
|dw:1436922065559:dw|
mathstudent55
  • mathstudent55
You're welcome. The answer is 2 bricks.

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