Monique Faith

Hi lauracspalla! That's right; you can simplify 24/45 to 8/15. 👍 Great job!!! 1st.) 45/4 = 12/2f 2nd.) Cross multiply 45 * 2f = 90f ; 12 * 4 = 48 3rd.) Therefore, 90f = 48 4th.) f = 48/90 5th.) Sim...

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3. Solving proportion

Hi Ben! I think you can apply for a content specialist job at Khan Academy (I understand if this is too extreme). Unfortunately, I can't find any contact info so you can email or phone them. My apo...

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3. Mechanical Engineering Courses

Hi ToxicPiggy (BTW you have a cool username)! I might be mistaken, but you could check your progress by going to the left navigation bar and clicking Progress.  Here's an article that explains it: ...

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3. How do I check my overall skills?

Great idea! Looking forward to more courses related to Health Science and Medicine. 👍

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3. Add epidemiology courses

Yay! That's great! So happy it helped! ^^

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3. Chemistry Problem - Difference between relative atomic mass and average atomic mass

Hi Megane! I'm probably too late, but I found some information on Quora and an article on Khan Academy. The definition might just depend on the level of Chemistry you're studying. According to Khan...

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3. Chemistry Problem - Difference between relative atomic mass and average atomic mass

Hello miamcdonnell92! I worked out the proportion below: 7 watermelons / $8.96 = 5 watermelons / $ Cross multiply the $8.96 with the 5 watermelons ; that is, $8.96 x 5 = 44.8. Divide the product ($...

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3. Writing proportions

Hi jay! 70/100 cm is equal to 7mm. Here's what you can do: When converting a large unit (cm) to a small unit (mm), multiply the larger unit by the conversion factor. So, 70/100 x 10 = 700/100 700/1...

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3. 4th grade math course challenge

It's been THREE YEARS! Please make articles available in PDF, or any printable format, Khan Academy!

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